For 203mm Rotor. Shimano Disc Brake Adapter. IS = 51mm (centre to centre). PM = 74mm (centre to centre).
Shimano Disc Brake Mount Post IS Adaptor Front Rear 160 180 203 mm CHOICE
Shimano Disc Brake Mount Adapter - SM-MA-F180P/P2 - PM to PM - 180mm
Shimano Shimano Post Mount 220mm Disc Brake Mount Adaptor
140/160/180/203mm Bike Disc Brake Mount IS/PM Adapter Road Mountain fit Shimano
140/160/180/203mm Bike Disc Brake Mount Adapter IS/PM Road Mountain fit Shimano
Shimano Disc Brake Caliper Mount Adapter - Front / Rear - Post / IS
