Athena Big Bore Kit

Athena Big Bore Kit
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Athena Big Bore Kit

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Additional Videos

How To - Rebuild The Top End On A KTM RFS Motor (Part 1)

How to - check piston ring end gap

How to - Four-Stroke Top End Rebuild (Part 2)

How to - rebuild the top end on a motorcycle or atv (Part 2)

How to - rebuild the top end on a motorcycle or atv (Part 1)

RM YouTube Channel


  • Athena cylinder kits are a bolt on performance replacement kit specifically designed for each model, with no machining required.
  • Kits include a nickel carbine coated cylinder designed with wider water jackets, complete piston kit and a top end gasket set.
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