1988-1998 | OBS | ExtReme Chassis | IRS | Pro Touring | GM Trucks (speedtechperformance.com)
Brand new take on the OBS platform with the best geometry, front and back.
Independent Rear Suspension giving 110% motion ratio and built to handle 1,200HP out of the box
Fully tunable caster, camber, toe, ride height front and back.
Corrected and proper Ackerman giving up to 20% more inside
