About Us


ASR (A-Spec Racing) started as the popularity of racing Honda vehicles on road course needed a stiff rear anti-roll bar for better corner rotation. Founder, Charleston Ong wanted his 1999 Civic EX sedan to handle great around tracks and canyons. His idea was to use ( NASCAR ) anti-roll bar torsion beams on the rear of the car.  Some creative mounting solutions made it work and the maiden track test proved very successful. In a short time many racers adapted this bar on their race car.

ASR was born in 2005, with a humble beginnings in the garage of the founder's house. We now design and manufacture all ASR products in our facility in Chatsworh, CA.


Manufacturing and Testing

ASR designs every product using the latest CAD software and manufactures using the state of the art CNC machines by HAAS here in the USA.  We also extensively test each ASR product prototype on various race tracks before bringing the product to the market. The ASR brace and anti roll bar has become the number one choice for serious enthusiast and racers worldwide.

ASR Product Development

Subframe Brace Design

A larger rear anti-roll bar is one of the most significant upgrades you can do to reduce understeer to any front wheel drive car. However, due to a thinner gauge steel used on many popular Honda and Acura in the 1990s, these vehicles will suffer subframe damage when upgrading to a larger anti roll bar. The ASR subframe reinforcement brace for Honda and Acura vehicles was created to significantly reduce the chance of tearing of the rear subframe. The design focus is to reduce anti roll bar attachment point stress by distributing the load over a wider area. This was accomplished by using the lower control arm bolt as the anchoring point. Then we further strengthen it by using a wide billet plate which became the signature of our design. The plate not only ties the two ends of the subframe together but more importantly it locates all the mounting points and prevent them from shifting under load. Lastly, contoured machined billet backing plates further reduces stress on the subframe mounting points. All these design elements greatly reduce the stress associated with the subframe when larger rear anti-roll bar is equipped.



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