Dual Friction(R), Clutch Pressure Plate and Disc Set 1983-pontiac-firebird-esi2278290 BMR springs are manufactured from

BMR springs are manufactured from chrome silicon high-tensile spring wire

4 grams Zinc (Zn)

these springs are lighter and have increased travel due to the larger distance between the coils

Popular with turbo and blown door slammers like NMRA

Dual Friction(R), Clutch Pressure Plate and Disc Set 1983-pontiac-firebird-esi2278290 BMR springs are manufactured fromThe Centerforce(R) Dual Friction(R) Clutch Series is a performance matched pressure plate & disc combination featuring the patented Centerforce centrifugal weight system (where applicable) and specialized machining processes to provide a performance clutch that offers exceptional street characteristics, while offering outstanding holding capacity and durability. Furthermore, the Centerforce Dual Friction disc has an organic full facing on one side for