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About Athena Big Bore Hyper Race Complete Cylinder Kit

Athena Big Bore Hyper Race Complete Cylinder Kit

  • Complete 70cc Big Bore Performance Kit
  • Kits feature a new cylinder head design, lighter flat-head piston and special porting to increase power
  • Race crankshaft is made of special steel that is machined-forged for added strength and features a 12mm wrist pin
  • Lighter connecting rods have full rounds and special needle bearings to reduce crankshaft volume
  • Full exhaust system included
  • Included 19mm Dell Orto carburetor provides optimal airflow to match the increase in engine performance
  • Throttle cable and all necessary gaskets included.

Warning:  California Proposition 65

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