its the long stroke 78mm crank in standard trim SXS06580020
- Factory Crankshaft for maximum power!
- 552cc with standard cylinder
- 576cc with 540 Kit SXS03540550
and the barrel is the factory 97mm barrel not an over bored 95.
Piston is vertex 97mm high comp.
infact peter i'll have them consider them sold
your not wrong big guyGreat sales pitch