The long stroke edition has DLC black coated treatment .
Mid to high end maximum Power
The Short stroke edition has extra piston sleeve modification!
Low to mid end maximum Power.
The best factory tuned engine from Novarossi .Front and Rear ceramic , 2 weights on 11.9 crankshaft, N2 conrod , tuned piston sleeve !!!
World Champion Engine from Os Speed!
2019 spec . The long stroke edition has DLC black coated treatment .