Deore XT FC-M8130 (W/O Chainring) Crankset Superboost

The Deore XT FC-M8130 is the Super Boost version of Shimano's 12-speed mountain crankset, with a 56.5 mm chain line that matches frames using 157 mm rear spacing. It uses the HOLLOWTECH II layout, where the bottom bracket axle is integrated with the right crank arm and the bearings sit outboard of the shell.

This version ships without a chainring, so the four-arm direct mount spider takes a Shimano ring in 28, 30, 32 or 34 tooth sizes to suit the terrain. The arms are aluminium with an anodised finish over a steel axle, and the crankset runs on an outboard bottom bracket in a 68 or 73 mm threaded shell.

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