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Kit includes:

  • 55mm Forged Piston with RK Ring kit 
  • 55mm Sleeved cylinder 
  • Base and head gasket set

This kit provides a significant horsepower and torque increase across the entire rev range. Expect gains of 30% in the midrange over a bike with intake, exhaust and cam, and double the horsepower of a stock bike at 8500rpm.

DHM 149cc Big Bore Kit

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