The Brand, the Bond, and the Builder: Why Burnout Brands Acquired D&J Precision Machine

Inside a buy-side thesis built on a simple conviction: acquire businesses whose customers believe in them, keep the founder in charge, and add the resources to accelerate the growth plan the founder already wrote. Hart Marx Advisors served as buy-side advisor on the transaction.

Burnout Brands / Hidden Harbor Capital Partners  

D&J Precision Machine

The performance automotive aftermarket runs on something no balance sheet captures well: the bond between an enthusiast brand and its customers. A diesel truck owner choosing an engine builder is not comparing line items — they are deciding whose name they trust with a machine they love. That trust takes years of consistent quality to earn and cannot be manufactured by marketing. For an acquirer, this creates a defining constraint: you cannot build the bond quickly. You can only acquire it — and then you must be very careful not to break it.

That constraint is the foundation of the Burnout Brands acquisition philosophy: find businesses with a strong brand and a genuine bond with their customers, keep the founder who built both, and add the resources — capital, logistics, distribution, administrative infrastructure — that let the founder accelerate the growth plans they had already developed but lacked the time or resources to fully realize. The acquisition of D&J Precision Machine is that philosophy executed to the letter.

Burnout Brands is a performance automotive aftermarket platform which, the time of the transaction was comprised two operating companies: BD Diesel of Abbotsford, British Columbia, a leading manufacturer and distributor of diesel performance products — exhaust brakes, turbos, intercoolers, fuel systems, and Cummins engine accessories — and Monster Transmission of Brooksville, Florida, a manufacturer of remanufactured and high-performance automatic transmissions and torque converters.

Under CEO Christian Roth, the platform's acquisition mandate was specific: find businesses whose products, customers, and capabilities would compound the value of the existing brands — not simply add revenue. BD Diesel sold everything around the Cummins engine. Monster built transmissions. The gap in the middle was the engine itself.

Founded in 2009 in Cambridge, Ohio, D&J Precision Machine built its reputation on one engine family done uncompromisingly well: the Cummins diesel. The product range runs from remanufactured long blocks for daily drivers through performance and heavy-duty tiers to full billet race engines — with cylinder heads from stock remanufacture through competition-stage builds, billet components, and complete ready-to-run packages, all machined, assembled, and tested in-house and sold through a loyal dealer network.

That breadth within a single platform gave D&J an unusually deep bond with the Cummins community — the daily-driver owner and the drag racer buy from the same shop, for the same reason. And behind the brand was a founder with more vision than bandwidth serving simultaneously as the master engine builder, the estimator, the customer service department, and the business administrator. The growth plans existed. The hours in the day did not.

The customer was already shared. BD Diesel's customer, the diesel enthusiast, is precisely the customer who needs what D&J builds. The acquisition deepened an existing audience relationship rather than chasing a new one and completed the platform's drivetrain offering: D&J engines, Monster transmissions, BD Diesel everything else.

Distribution was the bottleneck, not demand. D&J had national respect and regional logistics. Plugging D&J into Burnout Brands' distribution infrastructure and dealer network gave the brand reach that would have taken years to build independently — exactly the resource the founder's growth plan was waiting on.

The founder stayed in charge — and still is. D&J continues to run from Cambridge, Ohio today, with its founder, his standards, and his team intact. What the platform absorbed was the administrative weight — accounting, HR, IT, logistics — freeing the builder to build.

The brand was preserved, deliberately. Nothing about D&J's identity changed. In an enthusiast market, the fastest way to destroy an acquired brand's value is to make it feel acquired. Burnout Brands' model is the opposite: invisible infrastructure, visible continuity.

The results validated the thesis quickly. D&J's revenue soared post-transaction, driven by the distribution reach, production capacity, and administrative relief the platform provided — growth the business was always capable of but could not reach as a standalone founder-led shop.

The clearest proof of the founder-acceleration model is what D&J has built since the acquisition: expansion beyond its Cummins specialty into a full line of Duramax long blocks — a second major diesel engine family, machined and assembled to the same in-house standards. Entering a new engine platform takes tooling, inventory, and engineering capacity that a founder wearing four hats can rarely free up. With Burnout Brands behind him, D&J executed the expansion they could previously only plan.

Hart Marx Advisors served as buy-side advisor to Hidden Harbor Capital Partners and Burnout Brands — identifying D&J as the target, developing the investment thesis, conducting the founder outreach, and supporting the transaction through due diligence and closing. A thesis like this one cannot be executed from a database: it requires knowing which machine shops in the Cummins ecosystem have genuine technical reputations, which founders have ambitions beyond their current infrastructure, and how to open that conversation credibly. Our partners made the approach directly — as they do on every engagement — and the trust built in that first conversation carried through to close.

For private equity firms and platforms building in the performance aftermarket, the D&J transaction illustrates what sector-focused buy-side advisory delivers: not deal flow volume, but the one target whose brand, customers, and founder fit the thesis precisely.

For acquirers, the lesson is that in enthusiast markets the durable asset is the customer bond — and the bond lives with the founder and the brand. Acquisition models that preserve both, and simply remove the constraints around them, outperform models that integrate away the identity. For founders, the lesson is the mirror image: the right buyer is not looking to change your business. They are looking to fund the plan you already have. D&J Precision Machine had always been capable of more — it needed a platform, not a new direction.