big bore kit

**Fri Aug 02, 2013 9:22 am » Post: #1 » Download Post**

Just came across this bigbore kit offered by Firefox Racing in England and wondered if anyone has ever used one, takes the motor up 275cc, looks quite radical too.

**Fri Aug 02, 2013 2:14 pm » Post: #2 » Download Post**

Not sure if that's the same one I have seen.....BEWARE!!

They magically turn an NSR250 cylinder into an NSR150 cylinder by reboring. And somehow manage to fit a 5 stud RGV VHM head onto a 6 stud NSR cylinder.

All clever stuff!

**Fri Aug 02, 2013 8:44 pm » Post: #3 » Download Post**

yes i saw that too, i gave them a call and it's not what it seems on the ebay listing.
I will give this one a wide berth Smile

cheers