I have some brand new BB& MTN calipers that I traded for some BB5 Road calipers.

They were traded on the presumption that they were 160/160.

I have come to fit them and one caliper has a 0mm label on the adapter and the other +20mm. I took this to be 160mm (0mm) and 180mm (+20mm).

This does not seen to be the case.

So what the heck have I got!

the 0 is your front 160mm

the +20 is your rear 160mm

the IS mount on the rear of a frame is traditionally 20mm smaller than the front IS mount

Will go and swap them over……

Back in a bit 😀

Must have been the sun …. 😳

All sorted now!

I still say name & shame the seller – clearly a criminal, and we haven’t had the forks* out for ages

*pitch or bomber