The 3" biscuit has a smoother transition producing up to 2100 foot pounds of pull rate at only 1/2 travel (red biscuit), with the black biscuit producing up to 7500 foot pounds pull rate at 3/4 travel. The end result? TRACTION. With the four biscuit compounds available, you can custom tailor the OUTLAW Torque Absorber to fit your needs. (When using softer compound tires and/or tacky track conditions use part #QRP66-500)Pit Stop USA offers QuickCar Blue 3" Biscuit For Outlaw Torque Absorber 66-551 at low everyday prices. Be sure to check out all of our products from QuickCar Racing Products including QuickCar Racing Products Torque Link Bushings.