- Replacement bolt for DUB cranks

Shimano Altus M311 cranksets provide durability and reliable shifting for triple chainring drivetrains. - Hyperdrive SG-X chainrings - 7/8-speed compatible - Spindle interface type: Square Taper JIS

The RaceFace Aeffect R crankset offers enduro-rated strength in a lightweight XC-style package, making it a solid and dependable crankset choice. - Its forged 7050 AL construction optimizes stiffness without added weight - The Aeffect R features the versatile CINCH system for plenty of interchangeable spider options - Can run alloy or steel CINCH direct mount chainrings - Boost-compatible 24mm EXI interface spindle - Direct mount chainline: 51mm / 57.5mm (Flipped Ring) - 2X Cinch spider chainline: 49.5mm - Boost 2X Cinch spider chainline: 52.5mm - Number of Chainrings: No Rings, No Spider Included - Chainline/Hub Compatibility: 135/142 MTB Hubs, 141/148 Boost Hubs, 150/157 DH Hubs - Crank Intended Use: Mountain - Pedal Spindle: 9/16" - Spindle Interface Type: RaceFace EXI - Chainring BCD: Direct Mount CINCH - BB Included: No - Chainring Included: No

Shimano's Ultegra Compact Crankset boasts hollow-forged-aluminum arms and a hollow aluminum big ring. These technologies combine for impressive weight savings and superb strength. An integrated bottom bracket axle provides super-efficient power transfer, while chainrings with ramps, pins and notched teeth deliver lightning-quick shifting.