KOSO Grom Big Bore Kit with 4-Valve Cylinder Head (No CA) 170cc

Year*
$855.95


    Unleash all the power your Honda Grom can handle with the Koso 170cc Big Bore kit.
  • 4-valve cylinder head with intake manifold.
  • Performance Camshaft, bearing, and rocker arms.
  • Ceramic coated aluminum cylinder.
  • 61mm bore, 11.5:1 compression ratio.
  • Forged piston/ring kit (premium fuel required)
  • Top end gasket kit and banjo bolts included.
  • NOT LEGAL FOR USE IN CA.

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