Bore: Yes
Stroke: Yes
Actual Displacement = 521.15cc

Engine Modifications Included:

Cylinder:
"Ice Cube style" forged aluminum sleeve plated with Apticote 2000 Ceramic coating

Fuel Required:
110 Octane - This is a full-blown race engine see 490cc kit for pump fuel.

Piston:
Custom CP Piston Xtreme coated

Crankshaft:
Stroked and balanced OEM crank with Falicon Knife rod.

Crankcase:
Balance shaft requires modification to clear rod.