COMPLETE PERFORMANCE SYSTEM
Transform your classic 68-70 Mopar B-Body (charger, Superbee, GTX) into a true modern performance machine with the Speedtech ExtReme Front Subframe and Torque Arm Rear Suspension. Engineered as a complete system, it delivers increased chassis rigidity, optimized geometry, and predictable handling—on the street, track, or autocross.
FRONT-END PRECISION & WIDE TIRE CAPABILITY
The ExtReme front subframe is designed for serious performance, with clearance for up to 315mm front tires, refined steering geometry, and exceptional rigidity. Paired with QA1 or JRi coilovers and a dual-power rack and pinion from Sweet Mfg., it provides precise, connected steering feel with a balanced, street-friendly ride.
SUPERIOR TRACTION & BINDLESS REAR PERFORMANCE
The Extreme Torque Arm is engineered to maximize traction and stability under acceleration. Optimized anti-squat geometry plants the rear tires, reducing wheel hop and improving launch performance, while maintaining consistent axle control through corners. Unlike traditional 4-link setups, the system articulates through suspension travel without bind—delivering smoother operation and improved ride quality.
PRECISION HANDLING & CONTROL
When paired with a panhard or watts link, the system maintains proper rear axle positioning for predictable, confidence-inspiring cornering. The result is a balanced chassis that responds consistently at the limit.
FULLY ADJUSTABLE FOR ANY APPLICATION
Built-in adjustability allows you to fine-tune pinion angle, instant center, and suspension preload to match your setup—whether you're cruising, drag racing, or autocrossing.
RACE-READY STRENGTH, STREET-READY RELIABILITY
Constructed from high-strength materials with a rigid, lightweight design, this system is built to handle serious power and repeated abuse without compromising durability or performance.
BOLT-IN INSTALLATION, NO MAJOR MODS
Designed to bolt into factory locations, this system requires no major fabrication. It retains rear seat and trunk space while accommodating a wide range of engine and transmission combinations.
PROUDLY MADE IN THE USA
Every Speedtech system is precision-built in the USA using premium materials and expert craftsmanship—engineered to perform and built to last.
Tech Info
