With 6 different compartments

5" Crown / Steerer clearance in a frame with an inner lower headtube diameter of 49 millimeters (external bearing cups)

EN1621-1:2012 certified

Body Material aluminium extruded / CNC machined

there are lots of options

Shimano XT SM-CRM85 Shimano Direct Mount Chainring - Shimano Direct Mount - Round - Black - Grey - 36T PLP|Colour With 6 different compartmentsThe XT SM CRM85 chainring uses the same direct mount system as XTR and also features Dynamic Chain Engagement. With a narrow wide tooth profile, it provides excellent chain retention and less chain vibration even on bumpy trails. Who's this item for: Designed for all riders using Shimano 12 speed direct mount cranks. Number of teeth: It is available in 30T 38T options. Mounting style: Mounts using Shimano's Direct mount system and can be used across