Blackspire Super Pro Inner
The Engineered ring! CNC cut from 7075-T6 aluminum, this ring has modified shifter gates & special profiles to allow 8/9 speed chains to shift hassle free. The middle ring is cut from thicker 0.190 plate to prevent the chain from falling between the granny & middle ring. The outer & middle rings have stainless steel pins to further enhance shifting.
Blackspire Super Pro Inner Chainring Specifications:
- Stainless steel pins
- 4/5 bolt 20/22/24t
- 8/9 speed compatible