For newer style bottom brackets (BB-MT800) you will need a TL-FC25 adapter (available separately)

Dimensions and Weight: The Core is 41

Spindle Size: These cranks use a 24mm spindle

efficiently and securely with Eagle chains

Pin Quantity: 10 per side

Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Black - 12 Speed Shimano - 32T PLP|Riding Style For newer style bottom bracketsKeep that chain in place where it should be with a Burgtec Thick Thin Chain Ring. Designed with a proven thick thin tooth profile for improved chain retention. Who's this item for: Riders who use 1x drivetrains and are looking for superior chain retention as well as durability. Weight: 0. 08g Pros: Wide range of tooth options. Works for 9, 10, 11, and 12 speed setups. Great build quality. Cons: Oval options not available in all mounting types.