Registered Forum User
500SD
Bikes: multistrada, 748R/916
Posts: 592
Join Date: Oct 2003
Location: london
Mood: one very coool cat!
45mm are better apparently until you get an R then 50mm - take a look at an australian site - moto one and look up performance notes they have lots of info on all sorts of things including the 45 /50mm debate.