New

Athena has been constantly investing in cylinder aftermarket replacement parts for more than ten years, to improve their production and performance.All the cylinders are entirely engineered in Italy by Athena's R&D Department which has a strong...

Athena has been constantly investing in cylinder aftermarket replacement parts for more than ten years, to improve their production and performance.All the cylinders are entirely engineered in Italy by Athena's R&D Department which has a strong...

Athena has been constantly investing in cylinder aftermarket replacement parts for more than ten years, to improve their production and performance.All the cylinders are entirely engineered in Italy by Athena's R&D Department which has a strong...

Complete Big Bore KitIncludes cylinder, piston kit and gasketsMatched with vertex pistons to ensure longevity, performance and reduce engine noise.Cylinder looks just like stockNickel silicon carbide plated for longer lifeNo machine work needed

 (+3mm Big Bore Kit) makes 478cc. 12.0:1 compression. Uses Vertex #23534. When using Hot Rods 4193 makes 500cc Includes (Cylinder, Piston, Rings, Pin, Clips, Gaskets)

 (+3mm Big Bore Kit) makes 478cc. 12.1:1 compression. Uses Vertex #23595. When used with Hot Rods #4170 makes 500cc. Includes (Cylinder, Piston, Rings, Pin, Clips, Gaskets)

For Models:2010 - 2013 Kawasaki KX 450F

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersCylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon Carbide plated for long...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersCylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon Carbide plated for long...

Kits include aluminum cylinder with nickel-carbide coating designed with larger water jacketsIncludes Forged piston, rings, clips and pinAthena top-end gasket set includes required seals and hardwareEasy-to-follow step-by-step installation...

Hot Rods Bottom End kits include everything needed to complete crankshaft installation:Stroker kit crankshafts increase length of stroke as listed depending on application; in some cases cylinder head must be modified, as noted.Hot Rods main bearings and...

Complete engine rebuildCrankshaft assemblyOEM quality main bearingsAll engine gaskets, seals, and o-ringsWiseco ProLite 2-stroke piston and top end bearingWiseco standard series 4-stroke pistonCam chain included (if needed)Wiseco hour meter and bracket...