Adapter to use a larger brake disc in combination with a Postmount fork or frame and a Postmount brake. The adapter can be used as follows:
1) QM40 | + 20 mm
PM / 160 mm to 180 mm
2) QM44 | + 23 mm
PM / 180 mm to 203 mm
3) QM45 | + 40 mm
PM / 140 mm to 180 mm
PM / 180 mm to 220 mm
