Super Pro 4 arm rings

SuperPro Series Chainrings 

CNC’d from 7075 T6

* The ENGINEERED ring!
* Modified shift gates and special profiles to allow 8/9 speed chains to shift flawlessly
* Middle and Outer chainrings have strategically placed stainless steel pins to further enhance shifting
* Middle rings are cut from thick .190 material
* Outer rings are cut from .160 material
* For 8 or 9 Speed drivetrains