Uberbike Rear Post to IS 180mm Disc Brake Mount adapter - Colour Options SKU : PM-IS-R180-BLK (1 Reviews) Review this item Uberbike CNC machined 6061 T6 alloy disc brake adapter with laser etched Uberbike logos to mount 74mm post mount caliper to 51mm international standard frame mount with 180mm disc rotor. Weight only 23g. Please select your adapter colour by using the drop down menu below - Options Green Red Black Orange Blue IN STOCK £11.99 Earn 30 loyalty points Trustpilot