Top End Piston Kit; Yamaha 65 YZ 18-23

Description

Refresh your 2-stroke engine with the ultimate all-in-one rebuild solution. This premium kit perfectly pairs a high-performance cast piston with a precision-engineered top-end gasket set, taking the guesswork out of your next rebuild. Crafted from a specialized, high-silicon aluminum alloy using state-of-the-art CNC machining, this piston delivers OE-level reliability with enhanced durability and optimized flame propagation. Paired with Athena's legendary gaskets—featuring advanced surface treatments for a flawless seal under extreme pressure—this kit ensures your bike runs smoother, cooler, and faster. Take back your lost compression and experience race-ready performance straight out of the box.

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Complete all-in-one top-end rebuild kit saves time and hassle

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Constructed from a specialized high-silicon aluminum alloy for maximum heat resistance and strength

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Molybdenum disulfide coated piston skirts drastically reduce friction and internal wear

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Precision CNC-machined for perfectly smooth profiles and optimal flow

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Gaskets feature proprietary surface treatments and stress-relieving processes for unmatched sealing reliability

Includes:

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Cast 2-Stroke Piston (Domed Head)

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Piston Ring (1)

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Biconical Piston Pin

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Circlips

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Complete Top End Gasket Kit

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Piston Size: Ø 43.44mm (Also available in 43.45 mm and 43.46 mm for exact cylinder matching)

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Pin Dimensions: 12x35x8mm

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Compression Height: 24.0mm

California residents

WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.