- Cast bronze flywheel
- Highest quality made by Martin Model & Pattern
- Fully Annealed
The flywheel casting is oversize so you can finish it to the specified diameter.This flywheel has a rim width of 0.773″, a rim thickness of 0.337″, a hub diameter of 0.496″, and an overall hub length of 0.928″.


![PROFRAME HELMET MATTE [BLK] L](https://www.bestfixhardwareus.com/wp-content/uploads/2026/09/proframe-helmet-matte-blk-l.webp)





