Mustang II suspension and Corvette Spindle based geometry are things of the past!
Some "performance" suspensions out there are based on Mustang II suspension, a suspension that was developed for a lightweight compact car using 1970's technology, and at a time when performance handling wasn't a part of the vocabulary of most American cars. In an effort to handle better, other performance suspension systems have based their design around Corvette (or Corvette Copy) spindles and geometry. While that 1990's technology has proven to work better than the Mustang II, Speedtech and ATS have a thing for doing things even better.
Today's serious Pro Touring cars demand handling well beyond those other designs as the racing circuit becomes more and more competitive. While others continue to play with the outdated and overrated, we felt it's time to lead the pack and move forward, again! In early 2015 Speedtech's Research and Development crew developed a whole new suspension line, introducing the Best of the Best, our new ExtReme frames and suspension!
Implementing what we've learned through years of development and testing and inviting veteran road race and Nascar chassis builder Ron Sutton to the Speedtech design crew has produced a totally new, optimized, push the envelope type of suspension that outperforms anything else in the Pro Touring market.
Said Ron, "...we needed to achieve the optimum front dynamic roll center for any suspension strategy the customer wants to run, and we did it, it turned out perfect. This combined with the best Ackerman of any available front end, optimum camber gain and minimal jacking effect."
What does this mean to you? Ron continues, "... This makes these the Best handling, steering & driving frames available. They are an upgrade from frankly any full chassis or front subframe in the Pro Touring market today.”