Namura NA-10000-6 is a 1.50 mm oversize piston kit for the Honda TRX450 Foreman series

The Namura NA-10000-6 is a 1.50 mm oversize piston kit designed for the Honda TRX450 Foreman series. Because this is an oversize kit, it is intended for engines with cylinders bored out to 91.46 mm.

Vehicle Fitment

This kit fits the following Honda ATV models from 1988 to 2004:

• Honda TRX450FE FourTrax Foreman ES

• Honda TRX450FM FourTrax Foreman S

• Honda TRX450S Foreman

• Honda TRX450ES Foreman

Key Specifications

The Namura NA-10000-6 kit is built to high-performance standards to improve durability over stock components:

• Bore Size: 91.46 mm (Stock is 89.96 mm).

• Oversize: +1.50 mm.

• Piston Material: Hypereutectic aluminum alloy (high silicon content) to reduce expansion and increase wear resistance.

• Coatings: MOS2 (Molybdenum/Teflon) coated skirts to reduce friction and prevent "cold seizures."

• Durability: Anodized domes for 75% higher heat resistance compared to non-anodized pistons.

• Kit Contents: Piston, OEM-quality ring set, wrist pin, and circlips.

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