The Namura NX-70005K Top End Kit is designed for select KTM 65 SX and 65 XC two-stroke motorcycles equipped with Nikasil-plated cylinders. This complete top-end service kit includes a standard-size piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit for a convenient rebuild solution. It is engineered to support reliable fitment and dependable performance when restoring the upper end of the engine.
The piston features MOS2, or Teflon and molybdenum, coated skirts applied through a rolled-on process for a durable bond. This coating helps improve 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 is designed to improve heat resistance and piston durability. Namura’s hypereutectic casting process provides increased silicon content for reduced expansion, added wear resistance, and improved tolerance of elevated cylinder temperatures.
Manufacturer part number NX-70005K is listed for the following applications: 2009–2017 KTM 65 SX and 2009 KTM 65 XC. Confirm the motorcycle year, model, cylinder condition, and required piston specification before installation. This Namura top-end kit is intended for use with compatible Nikasil cylinders and provides the key components needed for a professional piston replacement or engine refresh.
Features:
- Complete Top End Kit: Includes piston, rings, wrist pin, retaining clips, top-end bearing, and gasket kit.
- MOS2-Coated Skirts: 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: Provides increased heat resistance and durability compared with non-anodized piston domes.
- Hypereutectic Casting: Higher silicon content helps reduce expansion, improve wear resistance, and withstand elevated cylinder temperatures.
- Fitment: Fits 2009–2017 KTM 65 SX and 2009 KTM 65 XC models with compatible Nikasil cylinders.
- Brand: Namura.
- Manufacturer Part Number: NX-70005K.
- Vendor Part Number: 185-7005.
Fitment:
2009 KTM 65 SX
2009 KTM 65 XC
2010 KTM 65 SX
2011 KTM 65 SX
2012 KTM 65 SX
2013 KTM 65 SX
2014 KTM 65 SX
2015 KTM 65 SX
2016 KTM 65 SX
2017 Husqvarna TC 65
2017 KTM 65 SX
2018 Husqvarna TC 65
2018 KTM 65 SX
2019 Husqvarna TC 65
2019 KTM 65 SX
2020 Husqvarna TC 65
2020 KTM 65 SX
2021 Gas-Gas Mc 65
2021 Husqvarna TC 65
2021 KTM 65 SX