For a SRAM MTB 3-Bolt XX1/X01/X1/NX/GX/Stylo Crankset（BB30/GXP/DUB）
Boost is for 148mm rear axle standard frame.
Chainrings bolts are not included in AXO power meters.
*SRAM BB30 Crankarm may not be compatible to this model unless your axle standard frame is 148mm.
*Boost is for 148mm rear axle standard frame
