River Associates Revs Up: PE Firm Acquires Horsepower in Bet on Adventure

CHATTANOOGA, TN – July 08, 2026 – In a move that underscores a significant shift in investment strategy towards experience-driven consumer markets, private equity firm River Associates Investments has announced its acquisition of Horsepower Automotive Group, a prominent portfolio of aftermarket brands catering to off-road and overlanding enthusiasts. The deal, which closed on June 11, marks the Chattanooga-based firm's third platform investment in the automotive aftermarket, signaling a deep and calculated commitment to a sector fueled by adventure and personalization.

A Strategic Consolidation

For over 35 years, River Associates has built a reputation for its methodical approach to investing in the lower middle market. The acquisition of Horsepower, funded from its $345 million River VIII fund, is a textbook example of its strategy: identify a strong platform in a high-growth niche and partner with its management to accelerate expansion.

Horsepower Automotive Group, based in Chandler, Arizona, is not a single entity but a curated collection of specialized brands, including Flatline Van Co., DV8 Off-Road, Addictive Desert Designs (ADD), C4 Fabrication, and Rago Fabrication. These names are well-known among enthusiasts who customize their Jeeps, trucks, and vans for rugged terrain and extended travel.

"Throughout the process, River Associates stood out as the right partner for Horsepower Automotive Group due to their thoughtful approach and extensive experience working with automotive aftermarket companies," said Chris York, CEO of Horsepower. He emphasized the goal to "continue investing in new product development, expanding our capabilities and strengthening our reach... while preserving the authenticity, service, quality and reputation that our brands have built with enthusiasts."

This focus on authenticity is crucial in a market driven by passion. River Associates appears to understand this dynamic. "Horsepower is an excellent platform... with a portfolio of premium enthusiast brands, a strong management team and a scalable operating foundation," noted Blake Lewis, Principal at River Associates. "We look forward to partnering with the team and supporting Horsepower as it continues to build on its momentum in the off-road and overland aftermarket."

Under the Hood of a Growing Powerhouse

To understand the value of this acquisition, one must look beyond the balance sheet and into the workshops and online forums where Horsepower's brands thrive. The portfolio represents a vertically integrated slice of the adventure vehicle ecosystem. Flatline Van Co. outfits the booming 'van life' segment with racks and interior systems. Addictive Desert Designs is renowned for its aggressive, style-forward bumpers and suspension for desert-running trucks. C4 and Rago Fabrication provide precision-engineered armor and mounting solutions, while DV8 Off-Road serves the massive Jeep community.

This is not River Associates’ first foray into this world. The firm previously acquired GAHH, LLC, a leading manufacturer of aftermarket convertible and Jeep tops, demonstrating a clear playbook for investing in vehicle personalization. However, Horsepower itself is a more mature platform, having been previously owned and scaled by Huron Capital Partners since 2015. Through a disciplined "buy-and-build" strategy, Huron consolidated nine different companies and invested in a state-of-the-art manufacturing facility, creating the pure-play off-roading platform that River Associates has now acquired. This history makes Horsepower a turnkey asset, primed for its next phase of growth rather than a ground-up build.

Fueling the Adventure Economy

The strategic rationale for the acquisition becomes crystal clear when viewed against the backdrop of the burgeoning 'adventure economy.' This deal is less about traditional auto parts and more about capitalizing on a fundamental cultural shift. The global overlanding accessories market, valued at $3.8 billion in 2025, is projected to surge to $7.1 billion by 2034, expanding at a steady 7.2% CAGR. North America is leading the charge, accounting for nearly 40% of global demand.

Market data reveals a passionate and high-spending consumer base. An estimated 12 million Americans will participate in overlanding in 2025, a staggering 50% increase from the previous year. A remarkable 95% of these enthusiasts modify their vehicles, with the average participant spending around $3,200 annually on new gear. More telling, one in four invests over $20,000 in total on vehicle modifications. This is not a fleeting hobby; it is a lifestyle, increasingly adopted by Gen Z and millennials, who now represent over 70% of new overlanders.

This demographic shift, combined with the dominance of light trucks and SUVs in new vehicle sales, creates a massive and growing addressable market for the products Horsepower manufactures. For an investor like River Associates, this translates into a resilient revenue stream tied not to cyclical new car sales, but to the enduring consumer desire for recreation, exploration, and self-expression.

The 'Buy and Build' Blueprint

River Associates has been explicit about its future plans. The press release states a clear intention to "pursue strategic add-on acquisitions that complement and enhance the platform." With solid financial backing from lenders Abacus Finance Group and GMB Capital Partners—both experienced in middle-market M&A—Horsepower is now positioned as a well-capitalized consolidator in a fragmented industry.

The shopping list will likely include companies in adjacent product categories that can be seamlessly integrated into Horsepower’s design, manufacturing, and distribution infrastructure. Potential targets could include specialized manufacturers of high-performance off-road lighting, advanced suspension systems, recovery gear like winches and compressors, or interior camping solutions like portable refrigerators and power systems.

By bolting on these capabilities, Horsepower can become a one-stop-shop for vehicle upfitters and direct-to-consumer sales, capturing more wallet share from every enthusiast. As private equity continues to map the terrain of specialized consumer markets, the acquisition of Horsepower Automotive Group serves as a clear signpost pointing toward the lucrative trail of the adventure economy.