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GhostBikes.com£138.49Visit shop Vertex Light 24582B - Cast Race Piston Kit For Kawasaki Kx85 2014-2025 Standard Size B
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The Vertex Cast Race Piston Kit (MPN: 24582B) is designed for serious motocross riders and engine builders looking to maintain or enhance the performance of their Kawasaki KX85. Engineered with advanced gravity-cast aluminum and a specialized race profile, it offers a significant durability upgrade over stock components, though it requires precise engine assembly knowledge for proper installation.
| Model Part Number | 24582B |
|---|---|
| Brand | Vertex |
Size B indicates a specific oversized piston meant to account for slight cylinder wear or manufacturing tolerances in the Kawasaki KX85 engine.
Yes, it is highly recommended to replace the needle bearing when installing a new piston to prevent potential bearing failure.
Please verify your specific model year against the MPN 24582B, as internal engine specifications can vary across different production years.
Follow the manufacturer's recommended heat-cycling process, typically involving several short sessions of varied RPM before full-throttle racing.
No, this kit includes only the piston, rings, wrist pin, and circlips; you will need to purchase a separate top-end gasket set.
Verify that the piston-to-wall clearance was measured correctly and ensure the wrist pin bearing is not worn.
Check that the piston rings are installed with the correct orientation and that the end-gap is within factory specifications.
Ensure the oil-to-fuel ratio is correct and check the cooling system for any air pockets or flow restrictions.
Installation of this kit must be performed by a qualified mechanic or an individual with specific experience in two-stroke top-end rebuilds. Before installation, clean the cylinder thoroughly and verify that the bore clearance falls within the manufacturer's recommended specifications for a Size B piston. During the break-in period, avoid prolonged high-RPM running to allow the coating and rings to seat properly. Regular air filter maintenance is crucial after installation to prevent debris from damaging the piston skirt or cylinder wall, which could lead to premature wear or catastrophic engine failure.
