or an RR wheel

Thanks for the help guys.

I've got a mix of rr and sp wheels (thanks again mick), so having an sp chassis setup will mean that the rr rear wheel won't fit (correct?), so if i stick with what i have and use a spacer then i can use both

I use the same wheels for racing sp wheels for dry and rr wheels for the wet. Ive got an sp rear caliper carrier and a rr spacer with 2.5mm turned off the end.