Allison Transmission Q1 2025 Earnings Report

Allison Transmission EPS Results

• Actual EPS: $2.23
• Consensus EPS: $1.97
• Beat/Miss: Beat by +$0.26
• One Year Ago EPS: $1.90

Allison Transmission Revenue Results

• Actual Revenue: $766.00 million
• Expected Revenue: $792.18 million
• Beat/Miss: Missed by -$26.18 million
• YoY Revenue Growth: -2.90%

Allison Transmission Announcement Details

• Quarter: Q1 2025
• Date: 5/1/2025
• Time: After Market Closes
• Conference Call Date: Thursday, May 1, 2025
• Conference Call Time: 5:00PM ET

Allison Transmission (NYSE:ALSN), together with its subsidiaries, designs, manufactures, and sells fully automatic transmissions for medium- and heavy-duty commercial vehicles and medium- and heavy-tactical U.S. defense vehicles, and electrified propulsion systems worldwide. It provides commercial-duty on-highway, off-highway and defense fully automatic transmissions, and electric hybrid and fully electric systems. The company offers transmissions for various applications, including distribution, refuse, construction, fire, and emergency on-highway trucks; school and transit buses; motor homes; energy, mining, and construction off-highway vehicles and equipment; and wheeled and tracked defense vehicles. It provides its transmissions and electric propulsion solutions under the Allison Transmission brand name; and remanufactured transmissions under the ReTran brand name. The company also sells branded replacement parts, support equipment, aluminum die cast components, and other products necessary to service the installed base of vehicles utilizing its solutions, as well as defense kits, engineering services, and extended transmission coverage services to various original equipment manufacturers, distributors, and the U.S. government. It serves customers through an independent network of approximately 1,600 independent distributor and dealer locations. The company was formerly known as Clutch Holdings, Inc. Allison Transmission Holdings, Inc. was founded in 1915 and is headquartered in Indianapolis, Indiana.

Allison Transmission Q1 2025 Earnings Call Transcript

Key Takeaways

• Allison reported Q1 2025 net sales of $766 million (down 3% YoY) with gross profit of $378 million, net income of $192 million (up $23 million YoY), diluted EPS of $2.23 (up 17%), and an adjusted EBITDA margin of 37.5% (up 90 bp).
• The company reaffirmed full-year 2025 guidance of $3.2–3.3 billion in net sales, net income of $735–785 million, adjusted EBITDA of $1.17–1.23 billion, operating cash flow of $800–860 million, capital expenditures of $165–175 million, and adjusted free cash flow of $635–685 million.
• Allison’s 3040MX medium-weight cross-drive transmission was selected by all OEMs in India’s Future Infantry Combat Vehicle (FICV) program, representing a multidecade revenue opportunity of several hundred million dollars.
• Daimler Truck North America standardized Allison’s FuelSense 2.0 Neutral at Stop technology on Freightliner and Western Star trucks to reduce idle fuel consumption and lower emissions.
• The company expanded its global service network in Japan and West Africa, adding new dealer and distributor agreements to support growing demand for fully automatic transmissions outside North America.

Presentation

[Operator]

Good afternoon. Thank you for standing by. Welcome to the Allison Transmission First Quarter twenty twenty five Earnings Conference Call. My name is Matt, and I'll be your conference operator today. At this time, participants are in a listen only mode.

[Operator]

After prepared remarks, Allison Transmission executives will conduct a question and answer session. In the conference call, participants will be given instructions at that time. As a reminder, this conference call is being recorded. I'd now like to turn the conference over to Jack DeBolz, Executive Director of Treasury and Investor Relations. Please go ahead.

[Jacalyn Bolles, Executive Director of Treasury & IR at Allison Transmission]

Thank you, Matt. Good afternoon, and thank you for joining us for our first quarter twenty twenty five earnings conference call. With me this afternoon are Dave Graziosi, our Chair and Chief Executive Officer Fred Bohley, our Chief Operating Officer and Scott Mel, our newly appointed Chief Financial Officer and Treasurer. As a reminder, this conference call, webcast and this afternoon's presentation are available on the Investor Relations section of allicentransmission.com. A replay of this call will be available through May 15.

[Jacalyn Bolles, Executive Director of Treasury & IR at Allison Transmission]

As noted on Slide two of the presentation, many of our remarks today contain forward looking statements based on current expectations. These forward looking statements are subject to known and unknown risks, including those set forth in our first quarter twenty twenty five earnings press release and our annual report on Form 10 ks for the year ended 12/31/2024. Should one or more of these risks or uncertainties materialize or should underlying assumptions or estimates prove incorrect, actual results may vary materially from those that we express today. In addition, as noted on slide three of the presentation, some of our remarks today contain non GAAP financial measures as defined by the SEC. You can find reconciliations of the non GAAP financial measures to the most comparable GAAP measures attached as an appendix to the presentation and to our first quarter twenty twenty five earnings press release.

[Jacalyn Bolles, Executive Director of Treasury & IR at Allison Transmission]

Today's call is set to end at 05:45 p. M. Eastern Time. In order to maximize participation opportunities on the call, we'll take just one question from each analyst. Please turn to slide four of the presentation for the call agenda.

[Jacalyn Bolles, Executive Director of Treasury & IR at Allison Transmission]

During today's call, Dave Graziosi will provide an update on recent announcements across our business, including a brief introduction and remarks from Scott Mel. Fred Bohley will then review our first quarter twenty twenty five financial performance and full year 2025 guidance prior to commencing the Q and A. Now, I'll turn the call over to Dave.

[David Graziosi, Chairman and CEO at Allison Transmission]

Thank you, Jackie. Good afternoon and thank you for joining us. First, I would like to welcome Scott Melt to the Allison executive team. Serving as our newly appointed Chief Financial Officer and Treasurer, Scott joins us with almost thirty years of diverse experience, providing strategic and financial leadership with an established and impressive track record. We are excited to welcome Scott and look forward to working with him as we continue to drive our vision and values and realize new opportunities that lie ahead.

[David Graziosi, Chairman and CEO at Allison Transmission]

Scott, if you'd to say a few words?

[Scott Mell, CFO & Treasurer at TriMas]

Thank you, Dave. Good afternoon, everyone. I am thrilled to be stepping into the role of Chief Financial Officer and Treasurer here at Allison and delighted to be working with such an experienced management team led by Dave and Fred. Needless to say, it is a very interesting time for the company given current end market dynamics, but I am highly energized by the opportunity to help shape the future of our business, strategically guiding Allison through the next phase of our growth and development, while continuing to deliver exceptional financial results for our shareholders. As a longtime resident of Greater Detroit, I am eager to get back to my roots of operating within the always interesting commercial vehicle industry and specifically working with an icon of the industry, Allison Transmission.

[Scott Mell, CFO & Treasurer at TriMas]

As I get up to speed, I look forward to further engagement with the broader investment community and helping guide Allison through the next phase of our growth and

[Scott Mell, CFO & Treasurer at TriMas]

development. Dave?

[David Graziosi, Chairman and CEO at Allison Transmission]

Thank you, Scott. Moving on with other announcements during the quarter. Late last month, we were pleased to announce that Allison's 3040MX medium weight cross drive transmission was selected as the propulsion solution of choice across all OEMs competing for India's Future Infantry Combat Vehicle or FICV prototype.

[David Graziosi, Chairman and CEO at Allison Transmission]

The FICV program aims to modernize the Indian Army's fleet of aging infantry fighting vehicles with intention to procure approximately seventeen fifty FICVs. The total revenue opportunity for Allison could represent several hundred million dollars over the next two decades. Being selected by all OEMs competing in the FICV program is a testament to the superior durability, reliability and performance of our 3040MX transmission and underscores Allison's commitment to growth in international defense market. In March, we announced that Daimler Truck North America or DTNA has standardized Allison's FuelSense two point zero Neutral at Stop technology for their Freightliner and Western Star trucks. Allison's Neutral at Stop technology reduces engine load at stops and reduces unnecessary fuel consumption when vehicles are at idle.

[David Graziosi, Chairman and CEO at Allison Transmission]

Our technology ensures that fuel is used for movement, not idling, enhancing overall fuel efficiency. We are pleased to partner with DTNA to make this innovative solution a standard offering for our customers, supporting fleets and their goals to reduce fuel consumption and vehicle emissions. During the quarter, we also announced the expansion of our global service network across Japan and West Africa, bolstering our current network comprised of 1,600 independent dealer and distributor locations and underscoring Allison's commitment to delivering global customer support and service accessibility, we have entered into service dealer agreements and formed strategic partnerships to strengthen service capabilities in key regions. As we continue to see significant growth in the preference for fully automatic transmissions outside North America, strengthening our service network is key to supporting our growing global customer base. Before passing it to Fred for a review of our financial performance, I would like to take a moment to share some perspective on the broader environment in which we are currently operating.

[David Graziosi, Chairman and CEO at Allison Transmission]

Although ongoing geopolitical tensions and shifting policies are creating uncertainty across our end markets, Allison's strategic advantages provide us with the flexibility to tolerate the current environment. Utilizing our global footprint, Allison can provide our North American customers with made in The USA products and supply our outside North American customers with on highway products produced outside North America. In addition, over 85% of our direct material spend is with suppliers based in North America. A majority are located in The United States with those located in Canada and Mexico currently under USMCA exemption. Importantly, Allison's sourcing from China is minimal regarding the number of components and spend.

[David Graziosi, Chairman and CEO at Allison Transmission]

Also through our long term supply agreements with customers, we pass through approximately two thirds of steel and 80% of aluminum cost. Finally, 30% to 40% of our North America on highway business is with municipal customers. As we have demonstrated through previous economic cycles, this portion of our business is insulated from the macro environment with municipalities continuing to buy amidst uncertainty. When taken together, we believe Allison is well positioned to continue our to supply our end markets while maintaining strong financial performance while remaining focused on our growth initiatives and operational efficiency, executing on both our near term and longer term strategic initiatives and proactively addressing changing market dynamics. We appreciate your support as we move through this period with resilience, maintaining our commitment to delivering long term sustainable growth.

[David Graziosi, Chairman and CEO at Allison Transmission]

Thank you and I'll now turn the call over to Fred.

[G. Frederick Bohley, COO at Allison Transmission]

Thank you, Dave. Following Dave's business update, I'll review our first quarter financial performance and our full year 2025 guidance. Please turn to Slide five of the presentation for the Q1 twenty twenty five performance summary. Year over year net sales decreased 3% from the same period in 2024 to $766,000,000 Year over year results were driven by a 4% increase in the North American on highway end market, principally driven by price increases on certain products and continued strength in Class eight vocational trucks, partially offset by lower demand for medium duty trucks. Year over year net sales were also driven by a 10% increase in net sales in the defense end market, principally driven by price increases on certain products.

[G. Frederick Bohley, COO at Allison Transmission]

Gross profit for the quarter was $378,000,000 an increase of $12,000,000 from $366,000,000 for the same period in 2024. The increase in gross profit was principally driven by price increases on certain products and UAW contract signing incentives recognized in the first quarter of twenty twenty four that did not reoccur in 2025. Net income for the quarter was $192,000,000 an increase of $23,000,000 from $169,000,000 for the same period in 2024. The increase was principally driven by higher gross profit and unrealized mark to market adjustments for marketable securities. Diluted earnings per share increased 17% year over year to $2.23 The increase was principally driven by higher net income and lower total diluted shares outstanding.

[G. Frederick Bohley, COO at Allison Transmission]

Adjusted EBITDA margin for the quarter was 37.5%, an increase of 90 basis points year over year. A detailed overview of our net sales by end market and Q1 twenty twenty five financial performance can be found on slide six and seven of the presentation. Please turn to slide eight of the presentation for the Q1 twenty twenty five cash flow performance summary. Net cash provided by operating activities for the quarter was $181,000,000 compared to $173,000,000 for the same period in 2024. The increase was principally driven by UAW contract signing incentives paid in the first quarter of twenty twenty four that did not reoccur in 2025.

[G. Frederick Bohley, COO at Allison Transmission]

We ended the first quarter with a net leverage ratio of 1.43 times, dollars $753,000,000 of cash and $744,000,000 of available revolving credit facility commitments, we continue to maintain a flexible, long dated and covenant light debt structure with our earliest maturity due in October 2027. Allison remains committed to prudent balance sheet management and shareholder friendly capital allocation priorities as demonstrated by the sixth consecutive annual increase to our quarterly dividend. Our quarterly dividend has increased over 80% since 2019. Also in the quarter, we announced a $1,000,000,000 increase in our authorization under our stock repurchase program. During the first quarter, we repurchased over $150,000,000 of our common stock, representing nearly 2% of outstanding shares.

[G. Frederick Bohley, COO at Allison Transmission]

We ended the first quarter with nearly $1,400,000,000 of authorization remaining. Please turn to slide nine of the presentation for our 2025 guidance. While our supply chain and manufacturing minimizes our exposure to global trade uncertainties, we continue to monitor the tariff environment and plan to offset the impact. Consistent with our previous assumptions, including continued strength in demand for Class eight vocational trucks and defense vehicles, we are reaffirming our full year 2025 guidance provided to the market on February 11. Allison expects net sales to be in the range of $3,200,000,000 to $3,300,000,000 In addition to Allison's twenty twenty five net sales guidance, we anticipate net income in the range of $735,000,000 to $785,000,000 adjusted EBITDA in the range of 1.1 hundred and $70,000,000 to 1,000,000,002 and $30,000,000 Net cash provided by operating activities in the range of 800,000,000 to $860,000,000 Capital expenditures in the range of $165,000,000 to $175,000,000 and adjusted free cash flow in the range of $635,000,000 to $685,000,000 This concludes our prepared remarks.

[G. Frederick Bohley, COO at Allison Transmission]

Matt, please open the call for questions.

[Operator]

Great. Thank you. We will now be conducting a question and answer session. First First question here is from Kyle Medjes from Citigroup. Please go ahead.

[Kyle Menges, Vice President & Equity Research Analyst at Citi]

Thank you. I thought it was nice margin performance in the quarter. I mean margins increased two seventy basis points year over year in the quarter versus the full year guide implying 80 basis points at least for the full year margin expansion. So just could we unpack that a little bit and what drove the really solid margin results in the quarter? I mean especially considering that the higher margin parts business was down about 7.5% year over year?

[G. Frederick Bohley, COO at Allison Transmission]

Yes, Kyle. Thank you. This is Fred. I'm really looking at the margins on a year over year basis, as you mentioned, certainly expanded. Specifically looking at gross margins and walking that through, first quarter last year we were 46.4%, coming in at 49.3% and then dropping down to EBITDA margins as you mentioned 90 basis points of expansion.

[G. Frederick Bohley, COO at Allison Transmission]

Relative to the gross margin expansion, price was meaningful, dollars 39,000,000 in price in the quarter. We did have the one time UAW signing incentives in gross profit last year that was excluded from EBITDA. But relative to gross profit, 13,000,000 in lower expense there. And then obviously net sales was down after price which impacted us 37,000,000 with material costs unfavorable $6,000,000 So that will basically bridge you to the $12,000,000 from a gross profit standpoint and that will all be disclosed when we publish the Q tomorrow. Relative to EBITDA margin, that 90 basis points, net sales down $20,000,000 unfavorable vol mix really offset by the price, the $39,000,000 in price or roughly 500 basis points of price recognized on a year over year basis.

[Kyle Menges, Vice President & Equity Research Analyst at Citi]

Thank you. That's helpful.

[Operator]

Our next question is from Ian Susino from Oppenheimer. Please go ahead.

[Isaac Sellhausen, Director - Equity Research at Oppenheimer & Co. Inc.]

Hey, good afternoon. This is Isaac Chausen on for Ian. Thanks for taking the question. I just had one, could you provide some high level thoughts on just any vocational demand environment, maybe where specifically strength is coming from? And are you not seeing any weakness at all from customers or within the useful spending or funding, etcetera?

[Isaac Sellhausen, Director - Equity Research at Oppenheimer & Co. Inc.]

Thanks.

[David Graziosi, Chairman and CEO at Allison Transmission]

Hi, this is Dave. A couple of things there. So as we talked about and I'm sure you recall back both the most of our calls last year and followed by our call in February in terms of North America vocational continues to be our expectation was entering this year, continued to be a relatively robust and strong market. I would certainly point you to the comments of certainly the North America OEMs and what they're seeing from a vocational perspective. Again, not I would not disagree with their comments.

[David Graziosi, Chairman and CEO at Allison Transmission]

We continue to enjoy significant market position there and demand for our product. As you know, we've made some investments over the last number of years to increase capacity. So we're certainly well positioned to supply the level of this market, which more or less relatively flat over on a year over year basis consistent with what we had mentioned in February. So as we discussed or mentioned in the prepared comments, again, with the underlying fundamentals, even with our portfolio around municipalities, they continue to be very present in the market for vocational vehicles. And I'm sure you're aware of other the OEM comments that have vocational exposure to a number of the sub segments there.

[David Graziosi, Chairman and CEO at Allison Transmission]

So we're benefiting from that as well. From the support perspective, as we've discussed, a fair bit of investment happening out in the marketplace that dates back several years. I would also mention the more recent announcements with the new administration in Washington continues to be supportive of investment in The U. S. So the team here is well positioned to supply market demand and meet customer expectations.

[Isaac Sellhausen, Director - Equity Research at Oppenheimer & Co. Inc.]

Thanks very much.

[Operator]

The next question is from Tim Thein from Raymond James. Please go ahead.

[Tim Thein, Managing Director & Research Analyst at Raymond James Financial]

Great. Thank you and good afternoon. And Scott, welcome. Good to work with you. Maybe Dave, just with respect to looking at the cash balance and what looks to be another strong year of cash generation per usual.

[Tim Thein, Managing Director & Research Analyst at Raymond James Financial]

Just how you're thinking about your capital allocation, especially with respect to M and A. Obviously, it hasn't been a central part of the strategy historically, but just curious if you have any updated thoughts in terms of how you're thinking about M and A and other potential avenues to deploy capital? Thank you.

[David Graziosi, Chairman and CEO at Allison Transmission]

You're welcome, Tim, and thank you for that question. I'll start and then Fred will finish here. But I would just say consistent with our shareholder friendly position We increased our dividend earlier this year. We continued on the path of share repurchases.

[David Graziosi, Chairman and CEO at Allison Transmission]

I'm sure you noticed from our results. And most importantly beyond the two items that I mentioned, we're certainly fully funding our business at this point from an organic growth perspective as well as product variance as well as new products, completely new products. I think the team is executing well there overall and really driving towards that. So beyond that, as we've talked about a number of different options out there for growth, and I'll let Fred comment on that.

[G. Frederick Bohley, COO at Allison Transmission]

Sure. Thanks, Dave. As Dave walked through, I mean, definitely we are sticking to our capital allocation priorities. First and foremost, funding the business, organic revenue growth, capacity, the activities we're taking in India. But we're always looking at what could be better inside of Allison than out.

[G. Frederick Bohley, COO at Allison Transmission]

So we're certainly spending time proactively looking at different opportunities. Obviously, a little bit of a tough market back right now but we obviously sit here in a position of strength, strong balance sheet and a company that is able to generate meaningful cash in just about any market environment. We've actively mitigated the risk really proactively relative to our footprint and supply chain. But what we're seeing right now, while everybody's exposed to tariffs, you know, the impact to us, you know, we feel very confident we can offset. So sitting here from a strong financial profile, we'll continue to proactively look at, what might be out there, that would be a good fit, as you would expect.

[Operator]

Next question is from Rob Wertheimer from Melius. Please go ahead.

[Rob Wertheimer, Analyst at Melius Research LLC]

Thanks. There's a Trump administration led section two three two investigation into sort of truck supply chains and so forth, and I'm not fully up to speed on where everybody makes transmissions. I know you guys have obviously extraordinarily high share in fully automatic transmission transmissions, But maybe it'd be a good moment to check-in on regional haul as well just to see if I don't know if there's any mismatch basically in the supply base that could advantage you if things come down in that direction. Thank you.

[David Graziosi, Chairman and CEO at Allison Transmission]

Hey, Rob, it's Dave. Thank you for that question. So back to our prepared remarks, as we've laid out, I think we're well positioned given our footprint in North America, more specifically The U. S. To supply the North American on highway market with a high level of localized content, if you will, at the same time relatively well aligned with our outside North America on highway customers and demand by region.

[David Graziosi, Chairman and CEO at Allison Transmission]

To your point on regional, the whole series or basically the day cab tractor market, as I'm sure you're aware that forecasts or forecasts that are out there for that particular market are relatively soft this year. So we're pursuing our market share position there in terms of our regional haul series product. We don't at this point anticipate significant dislocation issues if you're to your question on other suppliers' positions there. I think it's a market that's very well established. Having said that, I would say the tariff issue in general, as everybody knows, still remains highly uncertain.

[David Graziosi, Chairman and CEO at Allison Transmission]

I would also offer there can be and I would expect will be intended and unintended consequences of those that everybody is still trying to digest and understand. So, that's how we see things currently given what's been communicated. Your comment in terms of this February investigation. Guess public comments are due on that, I believe, the middle of this month ish. So it'll be, again, something we'll keep an eye on and be responsive to.

[Rob Wertheimer, Analyst at Melius Research LLC]

Looking forward to reading comments. Perfect. And then you mentioned the kind of stability in Class eight. Any comments on medium duty and the dynamics in that market? It's already corrected somewhat.

[Rob Wertheimer, Analyst at Melius Research LLC]

I wonder where you see it and what the drivers up and down are. I'll stop there. Thank you.

[David Graziosi, Chairman and CEO at Allison Transmission]

Sure. The medium duty North America, believe, is your question. As we had mentioned back February 11 call, our expectation and I believe the broader market was medium duty to be down on a year over year basis. The market has in fact played out that way. I would say the most recent OEM comments are consistent with that as well.

[David Graziosi, Chairman and CEO at Allison Transmission]

As we talked about in February, we saw the medium duty market well supplied from an inventory perspective. And I do not believe at this stage, we're expecting anything different than consistency with the guide that we had back in February.

[Rob Wertheimer, Analyst at Melius Research LLC]

Thank you.

[Operator]

Our next question is from Kamilin Zakaria from JPMorgan. Please go ahead.

[Tami Zakaria, Executive Director at JP Morgan]

Hey, good afternoon. Thank you so much. So it seems like pricing was up about 4.9% -ish in the quarter, which stepped up from about 3% in the fourth quarter. So is a mid single digit percent price realization a good proxy for the rest of the year? Or could it accelerate as the year progresses?

[G. Frederick Bohley, COO at Allison Transmission]

Hi, Tammy. This is Fred. Your numbers are fairly accurate. We initially guided, we talked about 400 basis points of price. We secured a little more price in the first quarter, closer to 500 basis points.

[G. Frederick Bohley, COO at Allison Transmission]

As we look for the balance of the year, I think at this point we'll probably come in a little north of the 400 basis points. So to your point is a mid single digit possible? I think the answer is yes.

[Tami Zakaria, Executive Director at JP Morgan]

Understood, thank you.

[Operator]

Next question is from Angel Castillo from Morgan Stanley. Please go ahead.

[Angel Castillo, Analyst at Morgan Stanley]

Hi, thanks for taking my question. Just maybe wanted to go back to some of the regulatory or administration related dynamics. There's also the EPA twenty seven regulation being kind of under review and then some recent votes in the House kind of targeting CARB a little bit more. Just curious if there's any implications on your broader business as you think about what's kind of embedded in your outlook and what you're seeing in terms of demand as some of these emissions regulations may become under pressure or maybe get pushed out?

[David Graziosi, Chairman and CEO at Allison Transmission]

Sure. Thank you for that question. So we certainly continue to monitor discussions of modifications to EPA 27 from the new administration and the executive orders, etcetera. Also, responses from the individual states. As we've talked about, I believe before, our product does not require significant modification in order to pair with these new engines.

[David Graziosi, Chairman and CEO at Allison Transmission]

So with the proposed emissions regs, so the short story there is largely our work is done. We've also announced a number of changes to with our product lineup to align with the new engines and their ratings. That being said, there's quite a bit of uncertainty surrounding what could happen, what will happen. In that regard, you can then get to the next question around potential impact on pre buys, etcetera, I believe we believe the industry has largely pivoted from a supply base perspective to align with the new emissions regulations that would be effective for 2027. The real question there is what the overall final regs we believe will drive requirements and thus the cost of the vehicle.

[David Graziosi, Chairman and CEO at Allison Transmission]

So that's really the underlying issue we believe at this stage relative to any type of outsized demand or non normal demand. I would also offer, given these announcements by the new administration, there continues to be a fairly high level of interest from OEMs in our conventional fuel efficiency features. As we mentioned in the prepared remarks, with DTNA's adoption of FuelSense and Neutral at Stop amongst a number of other technologies we deployed, we feel very well positioned in terms of the new emissions, the push for more efficient, more fuel efficiency as well as alternate fuels across the board. So we're pretty confident in terms of where we sit. I think now it's just a question back to your question, which is what are the final answers going to be there?

[David Graziosi, Chairman and CEO at Allison Transmission]

And that's something we're staying close to and we'll maintain very focused on as we get further into the year.

[Angel Castillo, Analyst at Morgan Stanley]

Thank you.

[Operator]

Our next question is from Luke Young from Baird. Please go ahead.

[Luke Junk, Senior Research Analyst at Robert W. Baird & Co]

Yeah, maybe just a quick one for me. Hoping you just comment on the step down in the parts business sequentially. Just anything in there that would be sticky or conversely one time in nature and just trying to square with the full year view which was I think flattish? Thank you.

[G. Frederick Bohley, COO at Allison Transmission]

Yes, Luke, this is Fred. There really isn't anything I'd say specifically I would call out. Was year over year unit sales were down, so you had lower support equipment for the initial installation of those units. But we also saw just, I'd say, general weakness across the global service parts. So nothing that I'd necessarily highlight.

[G. Frederick Bohley, COO at Allison Transmission]

We're coming off of two really strong years in '23 and '24. It's fairly robust out there, but I do think a lot of vehicles have been replaced and we're also we've got vehicles that are coming into service during some low volume years. When I say that, think about twenty twenty vehicles when volumes were down are now coming out of warranty and going into availability for retail sale parts. So they're displacing some higher volume years which is why our initial guide on that end market was I think 1% down.

[Luke Junk, Senior Research Analyst at Robert W. Baird & Co]

Got it. Thank you for that, Fred.

[Operator]

Our next question is from Jerry Revich from Goldman Sachs. Please go ahead.

[Jerry Revich, Analyst at Goldman Sachs]

Yes. Hi. Good afternoon, everyone. And Scott, congratulations. I want to ask, terms of the production plan over the next couple of quarters, if truck demand does slow on the vocational side as we've seen in medium duty on the sleeper side, how much room do you have to reduce over time?

[Jerry Revich, Analyst at Goldman Sachs]

I know you folks have been sprinting hard. So presumably, whenever that does happen, that first production cut, I believe, can likely be not super painful for margins, but maybe you can expand on that. And can you also comment on the level of inventories that you folks are at? Did you bring up inventories because of the uncertainty around tariffs or any other moving pieces we should be aware of? Thank you.

[G. Frederick Bohley, COO at Allison Transmission]

Hi Jerry, it's Fred. Relative to overtime and thinking about how we run our manufacturing facilities, for the medium duty demand, we run that in a separate plant than we do for the severe service. So we're already in a situation with the softening of the medium duty demand where we've taken down some overtime, done reset line rates. Relative to our larger on highway products, they're still running very robust. But to your question, if there was to be softening, yes, that's the first lever that we would pull which is to roll back that significant overtime that we've been running.

[G. Frederick Bohley, COO at Allison Transmission]

And then on inventories, a lot of the inventory that we've ramped up as you've seen, it's elevated is really to support the ramp up of our defense volume. We've got the second half ramping up pretty aggressively off of first half. So we've got a lot of parts in and in process relative to that. Looking at just the general on highway plants, inventories are at, I'd say, fairly optimal levels there.

[Jerry Revich, Analyst at Goldman Sachs]

Thank you.

[Operator]

This concludes the question and answer session. I'd like to turn the floor back to management for any closing comments.

[David Graziosi, Chairman and CEO at Allison Transmission]

Thank you, Matt. Thank you for your continued interest in Allison and for participating on today's call. Enjoy your evening.

[Operator]

This concludes today's teleconference. You may disconnect your lines at this time. Thank you again for your participation.

Participants

Executives

• Jacalyn Bolles, Executive Director of Treasury & IR
• David Graziosi, Chairman and CEO
• G. Frederick Bohley, COO

Analysts

• Scott Mell, CFO & Treasurer at TriMas
• Kyle Menges, Vice President & Equity Research Analyst at Citi
• Isaac Sellhausen, Director - Equity Research at Oppenheimer & Co. Inc.
• Tim Thein, Managing Director & Research Analyst at Raymond James Financial
• Rob Wertheimer, Analyst at Melius Research LLC
• Tami Zakaria, Executive Director at JP Morgan
• Angel Castillo, Analyst at Morgan Stanley
• Luke Junk, Senior Research Analyst at Robert W. Baird & Co
• Jerry Revich, Analyst at Goldman Sachs