The NAMURA NA-20065-4K Top End Kit is a complete replacement kit designed for select Kawasaki 650cc ATV applications. This 80.96 mm oversize kit features an 11:1 compression piston and includes the piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit needed for a reliable top-end rebuild. It is engineered for proper fitment in compatible Kawasaki KVF650 engines and is suitable for restoring performance during an engine overhaul.
The piston uses a hypereutectic casting process with increased silicon content to help control expansion, improve wear resistance, and withstand elevated cylinder temperatures. Its MOS2, or Teflon/molybdenum, coated skirts use a rolled-on application process intended to provide a durable bond while reducing friction, improving heat transfer, and helping 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.
Fitment includes the 2005–2011 and 2013 Kawasaki KVF650 Brute Force 4X4 with SRA, along with the 2002–2003 Kawasaki KVF650 Prairie 4X4 with SRA. Verify the year, model, bore requirement, compression ratio, and engine specifications before installation. This NAMURA top-end kit is manufactured for dependable service and includes the primary components required to complete the compatible cylinder, piston, and gasket replacement.
Features:
- Complete top-end kit includes piston, rings, wrist pin, retaining clips, top-end bearing, and gasket kit
- 80.96 mm oversize piston with 11:1 compression ratio
- 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 increases heat resistance and durability
- Hypereutectic casting process provides controlled expansion, enhanced wear resistance, and improved high-temperature capability
- Fits 2005–2011 and 2013 Kawasaki KVF650 Brute Force 4X4 with SRA
- Fits 2002–2003 Kawasaki KVF650 Prairie 4X4 with SRA
- Brand: NAMURA
- Manufacturer part number: NA-20065-4K
- Vendor part number: NA-20065-4K
Fitment:
2002 Kawasaki KVF650 Prairie 4X4 [SRA]
2003 Kawasaki KVF650 Prairie 4X4 [SRA]
2005 Arctic Cat 650 4x4 Auto V2
2005 Kawasaki KVF650 Brute Force 4X4 [SRA]
2006 Arctic Cat 650 4x4 Auto V2
2006 Kawasaki KVF650 Brute Force 4X4 [SRA]
2007 Kawasaki KVF650 Brute Force 4X4 [SRA]
2008 Kawasaki KVF650 Brute Force 4X4 [SRA]
2009 Kawasaki KVF650 Brute Force 4X4 [SRA]
2010 Kawasaki KVF650 Brute Force 4X4 [SRA]
2011 Kawasaki KVF650 Brute Force 4X4 [SRA]
2013 Kawasaki KVF650 Brute Force 4X4 [SRA]