The 1x 64/104 BCD variable tooth chainrings are compatible with all 9, 10, 11, SRAM and Shimano drivetrains, and 12-speed SRAM drivetrains.

Specifications:

• 104mm Bolt Diameter Circle (104 BCD)
• Bottom Bracket Types: BB30 / GXP / Boost
• Chainline: This varies with your crankset
• 28T: Fits any standard 64/104BCD cranks. The 28T chainring uses 64mm BCD to mount onto the crank arm and is offset 5mm to a 49mm chainline.
• 30T: ~50mm on a 2×10 mid-ring mounting position
• 32T, 34T, 36T, 38T: ~52mm on a 2×10 mid-ring mounting position
• Machined from solid 7075 T6 Aluminum
• Anodized black with laser-etched graphics

Precision CNC machined in Whistler, BC.