Shimano Brake Adapter - 180mm Post Mount to 203mm Rotor, Front, SM-MA-F203P/PM 4524667887416 | eBay
180mm direct mount forks and frames for 203mm disc brake rotor | SHIMANO BIKE-EU
Shimano part question - what's the difference? I'm mounting a 203mm rotor to a fox 36 with a 180mm direct mount. Both of these would do it but there are different part