Restore dependable engine performance with the Namura NA-10008K1 Standard Top End Kit, designed for select Honda Foreman TRX500 models. This complete kit includes a piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit, providing the essential components needed for a thorough top-end rebuild. The kit features a 11:1 compression ratio and a standard 91.96 mm piston size for compatible applications.
Namura uses a hypereutectic casting process to increase silicon content, helping reduce expansion rates, improve wear resistance, and withstand elevated cylinder temperatures. The piston skirts feature a MOS2 coating made with Teflon and molybdenum. This rolled-on coating process creates a strong bond while helping transfer heat, reduce friction, and minimize the risk of cold seizures. Machined smooth heads help reflect combustion heat and reduce carbon buildup, supporting piston durability and efficient operation.
The anodized piston dome adds heat resistance and strength for demanding riding conditions. This Namura top-end kit fits 2005-2009 and 2011 Honda TRX500FE Foreman 4X4 ES models with SRA, along with 2005-2008 Honda TRX500FM Foreman 4X4 models with SRA. Verify the model year, engine specifications, and existing piston size before installation to ensure proper fitment. Manufacturer part number: NA-10008K1. Vendor part number: 186-10081.
Features:
- Complete Top End Kit: Includes piston, rings, wrist pin, retaining clips, top-end bearing, and gasket kit.
- Standard Piston Size: Features a 91.96 mm piston with an 11:1 compression ratio for compatible Honda Foreman TRX500 applications.
- MOS2-Coated Skirts: Teflon and molybdenum coating helps improve heat transfer, reduce friction, and minimize cold-seizure risk.
- Machined Smooth Head: Helps reflect combustion heat and reduce carbon buildup for improved piston protection.
- Anodized Dome: Provides increased heat resistance and durability compared with non-anodized piston domes.
- Hypereutectic Construction: Higher silicon content helps reduce expansion, increase wear resistance, and withstand higher cylinder temperatures.
- Fitment: Fits select 2005-2009 and 2011 Honda TRX500FE Foreman 4X4 ES models with SRA and 2005-2008 Honda TRX500FM Foreman 4X4 models with SRA.
- Brand: Namura.
- Manufacturer Part Number: NA-10008K1.
- Vendor Part Number: 186-10081.
Fitment:
2005 Honda TRX500FE Foreman 4X4 ES [SRA]
2005 Honda TRX500FM Foreman 4X4 [SRA]
2005 Honda TRX500TM Foreman [SRA]
2006 Honda TRX500FE Foreman 4X4 ES [SRA]
2006 Honda TRX500FM Foreman 4X4 [SRA]
2006 Honda TRX500TM Foreman [SRA]
2007 Honda TRX500FE Foreman 4X4 ES [SRA]
2007 Honda TRX500FM Foreman 4X4 [SRA]
2007 Honda TRX500FPE Foreman 4X4 ES w/PS [SRA]
2008 Honda TRX500FE Foreman 4X4 ES [SRA]
2008 Honda TRX500FM Foreman 4X4 [SRA]
2008 Honda TRX500FPE Foreman 4X4 ES w/PS [SRA]
2008 Honda TRX500FPM Rubicon 4X4 w/PS [SRA]
2009 Honda TRX500FE Foreman 4X4 ES [SRA]
2009 Honda TRX500FM Foreman 4X4 [SRA]
2009 Honda TRX500FPE Foreman 4X4 ES w/PS [SRA]
2009 Honda TRX500FPM Rubicon 4X4 w/PS [SRA]
2011 Honda TRX500FE Foreman 4X4 ES [SRA]
2011 Honda TRX500FM Foreman 4X4 [SRA]
2011 Honda TRX500FPE Foreman 4X4 ES w/PS [SRA]
2011 Honda TRX500FPM Rubicon 4X4 w/PS [SRA]