Big Bore Kit 710cc – exchange your cylinder only

This kit will only be sent AFTER we receive your 644 cleaned cylinder for exchange.  Please order in the normal way, then arrange to send us your 644 cylinder only first.  We should be able to despatch 710 kit on the same day your 644 cylinder is received.

The difference feels like a whole lot more and makes the bike have more attitude!

This kit includes all gasket and jets, and will need to be fitted by a qualified or experienced technician, as with any rebuild.

* Not homologated for road use (for closed circuit use only)…….OK!