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About Athena Stock Bore Race Cylinder Kits

Athena Stock Bore Race Cylinder Kits

  • Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets
  • Easy-to-follow step-by-step installation instructions
  • Most are bolt-on; no machining required except where noted
  • Include aluminum cylinder with nickel-carbide coating, ported to Factory Works specs
  • Two-stroke kits include an aluminum cylinder head with a removable bronze dome allowing for a higher compression ratio and anti-detonation features (except where noted)
  • Two-stroke kits feature specially designed, high-performance, hard-anodized power valves (cannot use OEM)
  • Easy-to-follow, step-by-step installation instructions.
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