Hi, I have an undrilled rear mudguard but don't know how to go about it! Anyone with any tips TIA, Kev
Two pairs of hands. Mount all the brackets moderately tightly, just so that you can nudge them a little if you need to.
Offer the new mudguard up to the bike/bracket and dab a marker pen where the holes would be. Then get some masking tape and stick it over the marks.
Repeat the exercise tweaking the angle of the brackets so that they sit squarely to the guard and mark again.
I would then drill the holes out two at a time and then fit the correct bolts.
There is a video here from Speedwell: