Cam arm/Clutch Weights

Available in 50 and 60 gram base with the capability of adding 32 grams per arm for adjustment. This design allows the option of adding large quantity of weight to three different areas on both sides of the cam arm to create the shifting characteristics...

Tungsten Washer - 7 grams each      

Replacement bushings for the STM Supertip Yamaha cam arm weights. This is an updated part from our original part# 37buy Bushings are Ream after press .317 reamer is required 

Replacement 1st stage arm for the STM dual stage clutch.  These Cam Arms are not recommended at RPM ranges above 9000 RPM  Includes: 1 arm 1 new bushing.

Fastner kit comes with the following hardware:Supplied per arm: 2   - 7 gram tungsten inserts  15 - 1 gram washers  4   - O-rings  12  - M3 x 6 long screws  2  - set screws  Supplied per kit...

Supertip X Series Cam Arms for Yamaha

Sold individually. **Updated part# from 37 BU Replacement bushings for the STM Supertip weights. This bushing will be required when running the 1/4" pins.  Use on 40, 50, and 60 gram weights for 1/4" pins.

Replacements for spiders that came with these HD arms. Arms are sold individually and come with bushing already installed. HD 1st stage M5 fastener kit required with these arms and is sold separately.  These Cam Arms are not recommended at...

30 - 1 gram washers for STM Super Tip Cam Arms 

Available in 50, 60 and 72 gram increments with the capability of adding 32 grams per arm for adjustment. This design allows the option of adding large quantity of weight to three different areas on both sides of the cam arm to create the shifting...

Made specifically for higher engagement aggressive drag racing applications. Made with a healthy engagement notch. The notched arms were designed for the Rage primary and will also fit Arctic Cat fixed pin primaries and have a set screw...

20 of M3 x 6 torx flat head screws