Product info:
This is a replacement Ultimate Racing Brass Clutch Flywheel Collet and is intended for use with the .21 engines. Package includes two cones and two adjustment shims.
UR0521-12
UR0522-12
UR0522-6
UR0523-12
UR0523-6
UR0524-12
UR0524-6
UR0525-12
UR0525-6
UR0527-12
UR0527-6
UR0536-12
UR0531-12
UR0531-6
UR0532-12
UR0532-6
UR0533-12
UR0533-6
UR0534-12
UR0534-6
UR0535-12
UR0537-12
UR0537-6
UR0632-B10
UR0637