XScream custom billet 7 port power valve cylinder. This +10mm stroker amateur competition short block uses 85mm pistons for 885cc displacement (1 over bore remaining to 85.5mm).
Short Block Includes:
- X Scream Custom billet 7 port power valve cylinder
- XScream Billet Head & Domes
- Wiseco Pistons
- Modified Yamaha 62T cases - Includes XScream epoxy and finger port work, reinforcing front seal area with epoxy, installing a second pulse line fitting, CNC work to match the top case to larger transfer ports on the billet power valve cylinder and boring the cases to accept the +10mm stroker crank.
- 78mm Billet Stroker Crankshaft (+10mm)
- Requires Boyesen RAD Valve intake, XScream XS900 Custom Intake or a Riva reed spacer
- Also available as top end kit
This was the engine Daniel Martin won the 2012 Amateur World Finals with.