About Us
At A-Spec Racing, we build parts that make Hondas corner like legends.
It all started in 2005 when founder Charleston set out to transform his 1999 Civic EX sedan into a track-dominating machine. Frustrated by the lack of stiff rear anti-roll bars for road-course Hondas, Charleston had a bold idea: adapt rugged NASCAR torsion beam technology for his Civic. With creative mounting solutions and relentless testing in Southern California’s canyons and tracks, the result was a game-changer—a suspension upgrade that delivered razor-sharp corner rotation. Word spread fast, and soon racers across the community were clamoring for the same edge.
From humble beginnings in Charleston’s garage, ASR was born. Today, we design and manufacture every ASR product in our Chatsworth, CA facility, driven by a passion for precision and performance. Our mission is simple: empower racers and enthusiasts with innovative, track-proven parts that elevate handling to the next level. Whether you’re carving canyons or chasing podiums, ASR is your partner in building a Honda that performs as fiercely as your passion for driving.
Ready to unleash your car’s potential? Explore our parts and join the ASR legacy.
Manufacturing and Testing at ASR
ASR designs its high-performance automotive products using cutting-edge CAD software and manufactures them in the USA with state-of-the-art HAAS CNC machines for precision and quality. Every product undergoes rigorous prototype testing on diverse race tracks to ensure top-tier performance and reliability. As a result, the ASR brace and anti-roll bar have earned their place as the preferred choice for dedicated enthusiasts and racers worldwide.
ASR Product Development
ASR Subframe Brace Design for Honda and Acura Vehicles
Upgrading to a larger rear anti-roll bar is a highly effective way to reduce understeer in front-wheel-drive cars, particularly for performance driving. However, many Honda and Acura models from the 1990s, constructed with thinner-gauge steel, are prone to rear subframe damage when equipped with a larger anti-roll bar. The ASR subframe reinforcement brace addresses this issue by significantly reducing the risk of subframe tearing through a robust, carefully engineered design.
Design Features
-
Load Distribution: The brace minimizes stress on the anti-roll bar attachment points by distributing forces across a wider area, using the lower control arm bolt as a secure anchoring point.
-
Signature Billet Plate: A wide, high-strength billet plate ties the subframe ends together, stabilizing all mounting points and preventing movement under load.
-
Contoured Billet Backing Plates: Precision-machined backing plates further reduce stress at the subframe mounting points, enhancing durability.
Benefits
These design elements collectively reduce the stress imposed on the subframe when a larger rear anti-roll bar is installed, ensuring greater reliability and performance for enthusiasts and racers.