900cc (862cc) XScream Engine Short Block
Product Description:
- Yamaha 62t/64x based cases epoxied, reinforced and ported
- 76mm Stroker Crank
- XScream Custom Billet 7 port powervalve cylinder
- 85mm pistons
- X Metal Billet Head & Domes
- This was the motor Nac Floriancic won the 2008 Amatuer World Finals with.
(Requires Boyesen RAD Valve intake or Riva reed spacer)
Also available as top end kit.
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