The NAMURA NA-10014-4K Top End Kit is a complete replacement solution for select Honda 500 models. Designed with a 92.97 mm piston and an 11:1 compression ratio, this kit includes the piston, piston rings, wrist pin, wrist pin clips, top-end bearing, and gasket kit needed for a comprehensive top-end rebuild. The kit is engineered for dependable fitment and performance in powersports applications.
Compatibility includes the 2015–2016 Honda SXS500M2 Pioneer 500 and select 2014–2017 Honda TRX500 Foreman 4X4 models, including TRX500FE1, TRX500FE2, and TRX500FM1 configurations where specified. Verify the exact model, year, engine configuration, and service requirements before installation to ensure proper application.
The piston features NAMURA's MOS2 Teflon and molybdenum coated skirts. This rolled-on coating process creates a durable bond designed to reduce friction, improve heat transfer, and help minimize the risk of cold seizures. Machined smooth heads help reflect combustion heat and reduce carbon buildup, while anodized domes improve heat resistance and durability. The hypereutectic casting process increases silicon content to help control expansion, improve wear resistance, and withstand elevated cylinder temperatures. Manufacturer part number NA-10014-4K provides a reliable reference for replacement and ordering.
Features:
- Complete Top End Kit: Includes piston, rings, wrist pin, wrist pin clips, top-end bearing, and gasket kit.
- 92.97 mm Piston: Designed with an 11:1 compression ratio for compatible Honda 500 applications.
- MOS2-Coated Skirts: Rolled-on Teflon and molybdenum coating helps reduce friction, improve heat transfer, and minimize cold-seizure risk.
- Machined Smooth Head: Helps reflect combustion heat and reduce carbon buildup on the piston crown.
- Anodized Dome: Improves heat resistance and durability compared with a non-anodized piston dome.
- Hypereutectic Casting: Higher silicon content helps reduce expansion, improve wear resistance, and withstand higher cylinder temperatures.
- Fitment: Fits select 2015–2016 Honda SXS500M2 Pioneer 500 and 2014–2017 Honda TRX500 Foreman 4X4 models, including specified FE1, FE2, and FM1 configurations.
Fitment:
2012 Honda TRX500FPE Foreman 4X4 ES w/PS [SRA]
2012 Honda TRX500FPM Rubicon 4X4 w/PS [SRA]
2013 Honda TRX500FPE Foreman 4X4 ES w/PS [SRA]
2013 Honda TRX500FPM Rubicon 4X4 w/PS [SRA]
2014 Honda TRX500FE1 Foreman 4X4 ES [SRA]
2014 Honda TRX500FE2 Foreman 4X4 ES EPS [SRA]
2014 Honda TRX500FM1 Foreman 4X4 [SRA]
2014 Honda TRX500FM2 Foreman 4X4 w/PS [SRA]
2015 Honda SXS500M2 Pioneer 500
2015 Honda TRX500FA5 Rubicon 4X4 Auto DCT [IRS]
2015 Honda TRX500FA6 Rubicon 4X4 Auto DCT EPS [IRS]
2015 Honda TRX500FE1 Foreman 4X4 ES [SRA]
2015 Honda TRX500FE2 Foreman 4X4 ES EPS [SRA]
2015 Honda TRX500FM1 Foreman 4X4 [SRA]
2015 Honda TRX500FM2 Foreman 4X4 w/PS [SRA]
2016 Honda SXS500M2 Pioneer 500
2016 Honda TRX500FA5 Rubicon 4X4 Auto DCT [IRS]
2016 Honda TRX500FA6 Rubicon 4X4 Auto DCT EPS [IRS]
2016 Honda TRX500FA7 Rubicon 4X4 Auto DCT EPS Deluxe [IRS]
2016 Honda TRX500FE1 Foreman 4X4 ES [SRA]
2016 Honda TRX500FE2 Foreman 4X4 ES EPS [SRA]
2016 Honda TRX500FM1 Foreman 4X4 [SRA]
2016 Honda TRX500FM2 Foreman 4X4 w/PS [SRA]
2017 Honda SXS500M2 Pioneer 500
2017 Honda TRX500FA5 Rubicon 4X4 Auto DCT [IRS]
2017 Honda TRX500FA6 Rubicon 4X4 Auto DCT EPS [IRS]
2017 Honda TRX500FA7 Rubicon 4X4 Auto DCT EPS Deluxe [IRS]
2017 Honda TRX500FE2 Foreman 4X4 ES EPS [SRA]
2017 Honda TRX500FM1 Foreman 4X4 [SRA]
2018 Honda SXS500M2 Pioneer 500
2018 Honda TRX500FA5 Rubicon 4X4 Auto DCT [IRS]
2018 Honda TRX500FA6 Rubicon 4X4 Auto DCT EPS [IRS]
2018 Honda TRX500FA7 Rubicon 4X4 Auto DCT EPS Deluxe [IRS]
2018 Honda TRX500FE2 Foreman 4X4 ES EPS [SRA]
2018 Honda TRX500FM1 Foreman 4X4 [SRA]
2023 Honda SXS500M2 Pioneer 500