The SHIMANO lock ring for the SM-RT900 brake disc is used to fix the disc. Made of aluminium, the lock ring is internally toothed and comes in a…
Shimano XTR RT-MT900-S Disc Brake Rotor - 160mm
Holds Centre-lock disk rotors onto centre-lock hubs.
Shimano SM-RT900 lock ring & washer
Shimano Lockring for SM-RT70
Shimano DURA-ACE RT-CL900 Center Lock Disc Rotor 140mm,w/Lockring
Universal Cycles -- Shimano Disc Brake Centerlock Rotor Lockrings
Shimano SM-RT900 Dura-Ace Disc Brake Rotor Lockring and Washer
Shimano Rotor SM-RT900 Disc Centrelock – Rouleur Cycles
Shimano Sm-Rt900 Lock Ring & Washer
Shimano SM-RT900 Centrelock Lock Ring and Washer - Pushys
Shimano Lockring for SM-RT900 - bike-components
Shimano Dura-Ace SM-RT900 Rotor - Centerlock
Shimano RT-CL900 Center Lock Brake Rotor for Dura-Ace w/ Internal
SHIMANO - CENTER LOCK - Disc Brake Rotor - ICE TECHNOLOGIES FREEZA - 140 mm, The pinnacle in mountain bike braking, SHIMANO XTR RT-MT900 disc brake
SHIMANO SM-RT900 ROTOR DISC BRAKE 140MM WITH LOCK RING