Qty 2: Shimano Deore XT SM-RT81 Disc Brake Rotors 140mm Centerlock, no lock ring | eBay
Shimano XT SM-RT81 Disc Brake Rotor Lock Ring and Washer - Walmart.com
SHIMANO SM-RT81 LOCK RING &WASHER - SoCal Bike - Oceanside, Carlsbad and north San Diego county's favorite bike shop, Bicycle and ebike rentals, sales, and service
SHIMANO CENTER LOCK Disc Brake Rotor ICE TECHNOLOGIES 203/180/160/140 mm | SHIMANO BIKE-EU
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Shimano Deore XT SM-RT81-M Center Lock Rotor - 180mm
Shimano Deore XT RT81 Centerlock IceTech Disc Brake Rotor - West Hill Shop | Putney, Vermont