The HELIX R Cassette is an upgrade to any SRAM Eagle or Shimano drivetrain

The silicone material is extremely absorbent which reduces hand fatigue and arm pump

Who's this item for: Riders that tend to ride the nose of the saddle when climbing

High-Quality Copper LED PCB Heat Dissipation: At max 75W the Monteer 6500 heats up very quickly

Requires Hayes Brake Mounts as other brands will not provide enough clearance for the shape of the caliper

Shimano XT BB-MT801 68-73mm External Bottom Bracket - BSA Threaded - 68-73mm Shell - 24mm Images Uploaded - Ready for Review The HELIX R Cassette isPremium XT bottom bracket keeps the elements out and your cranks spinning freely. The XT BB MT801 uses smaller ball bearings for smooth operation while durable seals keep the dirt and grime out. The BB MT801 is compatible with Shimano Hollowtech II cranks and 68 73mm BB shells. Features: Excellent seals prevent wear 16 notch 41mm cups Includes BB, spacers, inner sleeve and o rings Compatible with 68 and 73mm BB shells For use with Shimano Hollowtech