SHIMANO 160mm 180mm Brake Rotor Disc Brake Adapter Front Rear Brake Caliper Base Adapter Bike B Post Mount Adapter 51mm A Post - AliExpress
180mm to 203mm rotors. Bought the shimano adapter for 203mm but the rotor won't fit into the caliper. Seems like I need even more of a gap to get the rotor to
How to convert Mountain Bike disc brakes from 160mm to 180mm - YouTube
Shimano F180P/P2 Disc Brake Adaptor | Jenson USA
Amazon.com : Shimano Unisex's SMMA90F203PPM Bike Parts, Other, One Size : Sports & Outdoors