Shimano XTR Crankset

No, the Shimano XTR crankset does not include a bottom bracket. You will need to purchase a compatible Hollowtech II bottom bracket separately to complete your installation.

This crankset is specifically engineered for 141/148 Boost hub spacing. It is not designed for standard non-Boost frames, as the chainline will not align correctly with your drivetrain.

The XTR crankset is optimized specifically for modern 12-speed drivetrain systems. While it may physically fit other setups, the chainring interface and chainline are designed to work best within the 12-speed ecosystem for optimal shifting performance.

The direct mount interface is designed for efficiency, allowing for rapid chainring exchanges. While the exact process depends on the specific chainring model you choose, the system is streamlined to make swaps significantly faster and easier than traditional bolt-on setups.

Choosing between 170mm and 175mm often comes down to personal preference and riding style. Shorter 170mm arms can provide slightly more ground clearance and are often preferred by riders who want to minimize pedal strikes, while 175mm arms offer a slightly longer lever for leverage, which some riders prefer for climbing.