Namura Size A Piston Kit for KTM 50 SX Pro Jr Sr Mini Junior STD Bore 39.50mm
Namura Size A Piston Kit for KTM 50 SX Pro Jr Sr Mini Junior STD Bore 39.50mm
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Namura Size A Piston Kit (STD Bore 39.50mm) for KTM
This Namura Size A piston kit with STD bore 39.50mm is designed for KTM 50 SX Pro Jr Sr Mini Junior models, replacing worn pistons.
Overview
This Namura Size A piston kit is a direct replacement for KTM 50 SX Pro, Jr, Sr, Mini, and Junior models, featuring a standard bore of 39.50mm. It restores compression and performance in two-stroke engines, making it a popular choice for rebuilds.
Built For Performance
- Precision-machined from high-quality aluminum alloy
- Includes rings, wrist pin, and circlips
- STD bore size 39.50mm for original spec rebuilds
- Balanced weight for reduced vibration
- Designed to meet OEM tolerances
Fits These Machines
- for KTM 50 SX Pro
- for KTM 50 SX Jr
- for KTM 50 SX Sr
- for KTM 50 SX Mini
- for KTM 50 SX Junior
On-The-Job Use
- During top-end engine rebuilds
- For competition and recreational riding
- When restoring older mini dirt bikes
Specs At A Glance
| Type | Piston Kit (Size A) |
| Bore | 39.50mm (STD) |
| Compatibility | KTM 50 SX Pro Jr Sr Mini Junior |
Good To Know
Q: Does this kit include the piston rings? A: Yes, the kit comes with rings, wrist pin, and circlips for a complete installation.
Q: Is this piston suitable for high-RPM use? A: Yes, Namura pistons are designed to handle the RPM range of these small two-stroke engines.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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