Im building a Axys BigBore 860 RMK 155"!
Ive got all parts now and just looking for time to build the engine....
Big bore 860, Wössner pistons, ported case, 4mm longer rods and cylinder shim, reed spacers, stock pipe and can, PCV, AFR and EGT meters, pump gas.
I had a ProRide built the same way...