- 64/104mm BCD 4-bolt chainring sets for MTB, Boost, and Fat applications
- Shifting ramps and stainless steel pins for smooth shifting
- 10 or 11 speed compatible
- Stamped AL2014-T6 alloy construction
- CHAINRING OR8 THRUSTER 64/104mm 28/40T 10/11s 4B SET BK
Teeth: 28/40T
Type: 2x
Material: AL2014
Color: Black
Chain: 10/11s
Tooth Type: Standard