Can anyone that races or is involved with Radical Cup share their build spec for the XXR 1500? Or recommendations? Some things seem pretty standard like carbon center seat and the race pack, but are people running the AP brakes upgrade, quiet exhaust, etc?
From what I've seen having been to a few Radical Cup meetings in the UK recently - almost all of the new XXR's are opting for the AP Calipers and Rotors... apparently much better 'feel' (and at least two people said the difference is noticeable although there is little lap time difference)
I think the quiet exhaust is a must if there are noise checks where you race... and that's certainly the case in the UK!! I race in Australia and there are limited/no noise checks here... but in the UK they were at every track/event I went to.. and all SR3's had the quiet exhaust options