XS900R Billet Top End Kit


900cc XScream custom billet 7 port power valve cylinder. This +10mm stroker amateur competition kit uses 85mm pistons for 885cc displacement (1 over bore remaining to 85.5mm).

Top End Kit Includes:
  • XScream Head
  • XScream Power Valve Cylinder
  • Wiseco Pistons
  • Wiseco Piston bearings
  • XS Power Valve Assemblies
  • Domes
  • Dome O Ring Kit
  • Base Gasket
  • Exhaust Gasket

This kit requires a 78mm billet stroker crankshaft (+10mm) and boring for clearance on the 62T cases.

This was the engine Daniel Martin won the 2012 Amateur World Finals with.

- We highly recommend our 62T case modifications to extract maximum power from this top end kit. Modifications include 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 our billet power valve cylinder, installation of "Disaster" plate and boring the cases to accept a stroker crank.

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  • Manufactured by: X-Metal

This product was added to our catalog on Friday 25 May, 2012.

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