This ensures a more durable clutch and stronger chain management over rough terrain

TLR-2 FEATURES:

The five LED's and 150-lumen daytime flash mode will make sure that drivers know that you are there and the body is shaped so that it can be easily mounted to both round and aero seat posts

Required tool for Shimano Hollowtech II cranks

TIRE LEVERS - 2 hard anodized aluminum Levers

SRAM Derailleur B-Bolt Assembly - Black - Torx Head - X01 DH 10 Speed Envelope Shipping This ensures a more durableGenuine SRAM Replacement B Bolt Kits. SRAM PART # UPC Black Eagle 12 Speed Hex Head Includes Limit Screws 11. 7518. 076. 010 710845785375 Gunmetal Grey 11 Speed Torx Head Includes Limit Screws 11. 7518. 014. 000 710845718397 Gunmetal Grey 7 Speed DH Torx Head 11. 7518. 033. 000 710845749636 12 speed B Bolts fit any 1x12 speed SRAM Derailleur 11 speed B Bolts fit any 1x11 speed SRAM Derailleur 7 speed B Bolts fit any 1x7 speed SRAM Derailleur