Restore top-end performance with the Namura Top End Kit, designed for select Husqvarna TC 125 and KTM 125 SX two-stroke motorcycles. This kit includes a piston, dual rings, wrist pin, wrist-pin clips, top-end bearing, and gasket kit for a complete replacement solution. The 53.95 mm piston is manufactured for compatible Nikasil-plated cylinders and is engineered to support dependable fitment and service life.
Namura uses a hypereutectic casting process to provide increased silicon content, helping reduce expansion while improving wear resistance and heat tolerance. The piston features MOS2, or Teflon/molybdenum, coated skirts applied through a rolled-on process that creates a durable bond. This coating helps reduce friction, improve heat transfer, and minimize the risk of cold seizures during operation.
The piston also incorporates a machined smooth head to help reflect combustion heat and reduce carbon buildup. Its anodized dome improves heat resistance and durability, while supporting consistent performance under demanding riding conditions. The included components make this kit suitable for rebuilding the top end during routine maintenance or engine service.
Fitment: Fits 2016–2020 Husqvarna TC 125 models and 2016–2020 KTM 125 SX models, including 2016 Husqvarna TC 125, 2017 Husqvarna TC 125, 2018 Husqvarna TC 125, 2019 Husqvarna TC 125, 2020 Husqvarna TC 125, 2016 KTM 125 SX, 2017 KTM 125 SX, 2018 KTM 125 SX, 2019 KTM 125 SX, and 2020 KTM 125 SX. Verify model year, cylinder condition, and piston specifications before installation.
Features:
- Complete top-end kit includes piston, dual rings, wrist pin, wrist-pin clips, top-end bearing, and gasket kit
- 53.95 mm piston size for compatible Nikasil-plated cylinders
- Namura MOS2-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, increased wear resistance, and improved high-temperature capability
- Fits select 2016–2020 Husqvarna TC 125 and KTM 125 SX models
- Brand: Namura
- Manufacturer part number: NX-70029-BK3
- Vendor part number: 185-7029B3
Fitment:
2016 Husqvarna TC 125
2016 KTM 125 SX
2017 Husqvarna TC 125
2017 Husqvarna TX 125
2017 KTM 125 SX
2018 Husqvarna TC 125
2018 Husqvarna TX 125
2018 KTM 125 SX
2019 Husqvarna TC 125
2019 Husqvarna TX 125
2019 KTM 125 SX
2020 Husqvarna TC 125
2020 KTM 125 SX
2021 Gas-Gas Mc 125
2022 Gas-Gas Mc 125