The NAMURA NA-10008-6K Top End Kit is designed for rebuilding the top end of select Honda TRX500FA Rubicon ATV engines. This kit includes a 93.46 mm (+1.50 mm) piston with an 11:1 compression ratio, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit. It provides the essential components needed for a dependable piston and cylinder service while supporting proper engine performance and durability.
The piston uses a hypereutectic casting process that increases silicon content to help reduce expansion and improve wear resistance. Its MOS2, or Teflon/molybdenum, coated skirts are applied using a rolled-on process that creates a stronger bond than conventional spray-on coatings. This coating helps promote heat transfer, reduce friction, and minimize the risk of cold seizures. The machined smooth head helps reflect combustion heat and reduce carbon buildup, while the anodized dome improves heat resistance and durability.
Feature: Complete top-end kit with piston, rings, wrist pin, clips, top-end bearing, and gasket kit
Feature: 93.46 mm (+1.50 mm) piston size with an 11:1 compression ratio
Feature: MOS2-coated piston skirts for reduced friction and improved protection during cold operation
Feature: Machined smooth piston head helps reduce carbon buildup and reflect combustion heat
Feature: Anodized piston dome for increased heat resistance and durability
Feature: Hypereutectic construction supports reduced expansion and improved wear resistance
Manufacturer: NAMURA. Vendor part number: NA-10008-6K. This top-end kit fits 2001–2009 and 2011 Honda TRX500FA Rubicon models equipped with SRA suspension. Verify the model year, engine configuration, and required oversize piston specification before installation. Professional installation and proper cylinder preparation are recommended for reliable fitment and performance.
Features:
- Complete top-end kit with piston, rings, wrist pin, clips, top-end bearing, and gasket kit
- 93.46 mm (+1.50 mm) piston size with an 11:1 compression ratio
- MOS2-coated piston skirts help reduce friction and minimize cold-seizure risk
- Machined smooth piston head helps reflect combustion heat and reduce carbon buildup
- Anodized piston dome improves heat resistance and durability
- Hypereutectic construction supports reduced expansion and increased wear resistance
- Fits 2001–2009 and 2011 Honda TRX500FA Rubicon models with SRA suspension
Fitment:
2001 Honda TRX500FA Rubicon [SRA]
2002 Honda TRX500FA Rubicon [SRA]
2003 Honda TRX500FA Rubicon [SRA]
2004 Honda TRX500FA Rubicon [SRA]
2004 Honda TRX500FGA Rubicon GPScape [SRA]
2005 Honda TRX500FA Rubicon [SRA]
2005 Honda TRX500FGA Rubicon GPScape [SRA]
2006 Honda TRX500FA Rubicon [SRA]
2006 Honda TRX500FGA Rubicon GPScape [SRA]
2007 Honda TRX500FA Rubicon [SRA]
2007 Honda TRX500FGA Rubicon GPScape [SRA]
2008 Honda TRX500FA Rubicon [SRA]
2008 Honda TRX500FGA Rubicon GPScape [SRA]
2009 Honda TRX500FA Rubicon [SRA]
2009 Honda TRX500FPA Foreman 4X4 At w/PS [SRA]
2011 Honda TRX500FA Rubicon [SRA]
2011 Honda TRX500FPA Foreman 4X4 At w/PS [SRA]
2012 Honda TRX500FA Rubicon [SRA]
2012 Honda TRX500FPA Foreman 4X4 At w/PS [SRA]
2013 Honda TRX500FA Rubicon [SRA]
2013 Honda TRX500FPA Foreman 4X4 At w/PS [SRA]
2014 Honda TRX500FA Rubicon [SRA]
2014 Honda TRX500FPA Foreman 4X4 At w/PS [SRA]