Restore top-end performance with the Namura NX-10230-2K Top End Kit, designed for select Honda CRF230F motorcycles. This 66 mm, +0.50 mm oversize kit provides the essential components for a dependable piston replacement and top-end rebuild, including a piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit.
The Namura piston uses a hypereutectic casting process with increased silicon content to help reduce expansion, improve wear resistance, and withstand higher cylinder temperatures. Its MOS2 Teflon/molybdenum-coated skirts are applied through a rolled-on process that creates a strong bond while helping reduce friction, improve heat transfer, and minimize the risk of cold seizures. The machined smooth head reflects combustion heat and helps reduce carbon buildup, supporting piston protection and consistent engine operation.
An anodized piston dome improves heat resistance and durability for demanding riding conditions. The included gasket kit and related hardware make this kit a practical choice for completing a top-end service with matched components. The Namura NX-10230-2K is designed to fit 2003–2009 and 2012–2014 Honda CRF230F models. Verify the existing cylinder specification and required oversize before installation to ensure proper clearance and fitment.
Features:
- Complete top-end kit includes piston, rings, wrist pin, retaining clips, top-end bearing, and gasket kit
- 66 mm piston with +0.50 mm oversize specification
- MOS2 Teflon/molybdenum-coated piston skirts help reduce friction, improve heat transfer, 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 casting process provides reduced expansion, improved wear resistance, and greater high-temperature capability
- Fits 2003–2009 and 2012–2014 Honda CRF230F models
Fitment:
2003 Honda CRF230F
2004 Honda CRF230F
2005 Honda CRF230F
2006 Honda CRF230F
2007 Honda CRF230F
2008 Honda CRF230F
2008 Honda CRF230L
2009 Honda CRF230F
2009 Honda CRF230L
2009 Honda CRF230M
2012 Honda CRF230F
2013 Honda CRF230F
2014 Honda CRF230F
2015 Honda CRF230F
2016 Honda CRF230F
2017 Honda CRF230F
2019 Honda CRF230F