Namura NA-10002 piston kit is primarily designed for the Honda TRX300 series

The Namura NA-10002 piston kit is primarily designed for the Honda TRX300 series. It is a standard bore replacement part that fits a specific range of 4x4 and 2x4 ATV models.

Vehicle Application List

According to official fitment guides, this kit is compatible with:

• Honda TRX300 FourTrax (2x4): 1988–2000

• Honda TRX300FW FourTrax (4x4): 1988–2000

• Honda TRX300EX Sportrax: 1993–2000 (Note: Some later catalogs extend this range to 2008 for the EX model, but ensure you are using the correct rings, as OEM and Namura rings are often not interchangeable for the EX).

Technical Specifications

This kit is designed to meet or exceed OEM specifications with several performance-oriented features:

• Standard Bore Size: 73.95 mm

• Piston Material: Hypereutectic aluminum alloy for high silicon content and reduced expansion.

• Coatings: MOS2 (Teflon/Molybdenum) coated skirts to reduce friction and heat.

• Durability: Anodized domes for increased heat resistance (75% stronger than non-anodized).

• Kit Contents: Piston, a set of rings, a wrist pin, and circlips.