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
Shimano adapter, front/rear, Post Mount, for 203 mm disc - MTBIKER.shop
Shimano Disc Brake Caliper Front Rear Post Mount Adapter PM MTB Bike 180/ 203mm | eBay
Shimano Disc Brake Adapter for 203 mm Rotors - bike-components