Shimano Dura-Ace RT-CL900 S Disc Brake Rotor Lockring - 160mm CenterLock Silver MFPN=11.4318.003.522 5 Bearing Type Cartridge Crown

5 Bearing Type Cartridge Crown Race 40 Material Alloy Defined Color Black Upper Stack Height 15

}Wolf Tooth Single Speed Aluminum Cog: 20T Compatible with3/32" chains

Color Black Size Large Sleeve Style Short Defined Color Black

37 BB/Frame Interface English BB Shell Width (mm) 68 BB Shell Width (mm) 73 Weight 105 Spindle Interface Type Shimano Hollowtech II Spindle Interface Type RaceFace EXI Spindle Interface Type FSA MegaExo Defined Color Green

Lightning Bolt Front Thru AxleAvailable front and rear Lightning Bolt-On axles offer a stronger more durable lower profile and lighter weight option to replace your stock thru-axles

Shimano Dura-Ace RT-CL900 S Disc Brake Rotor Lockring - 160mm CenterLock Silver MFPN=11.4318.003.522 5 Bearing Type Cartridge CrownShimano Dura Ace RT CL900 S Disc Brake Rotor with Lockring 160mm CenterLock Silver. The Shimano RT CL900 disc brake rotor provides quiet and consistent braking control for any terrain. Consistent braking performance on any long steep descent thanks to excellent heat dissipation Robust arm shape for quiet operation without sacrificing weight or heat dissipation Heat dissipation paint boosts performance Includes lock ring with internal serration TECH