Namura Standard Bore Size A Top End Kit for KTM 250 2-Stroke 2017-2021 66.4mm
Namura Standard Bore Size A Top End Kit for KTM 250 2-Stroke 2017-2021 66.4mm
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Standard Bore Size A Top End Kit for KTM 250 2-Stroke (2017-2021, 66.4mm)
This top end kit provides standard bore piston and cylinder components to restore compression and power for KTM 250 two-stroke models from 2017 to 2021.
Overview
The standard bore size A top end kit is designed to rebuild the upper engine of your KTM 250 2-stroke dirt bike. This kit includes a piston, rings, pin, and circlips to refresh worn cylinders. Riders rely on this top end kit for reliable performance on the track or trail.
Built For Performance
- Standard bore piston for stock cylinder dimensions
- Includes high-quality piston rings for optimal seal
- Includes wrist pin and circlips for secure installation
- Designed for KTM 250 2-stroke engine
- Lightweight forged piston for improved throttle response
Fits These Machines
- for KTM 250 2-Stroke (2017 to 2021)
On-The-Job Use
- Motocross racing
- Enduro riding
- Trail riding
- Practice and training
Specs At A Glance
| Bore Size | 66.4 mm |
| Bore Type | Standard |
| Type | Top End Kit |
Good To Know
Q: Does this kit include a gasket set? A: No, gaskets are sold separately. We recommend using a new gasket set for proper sealing.
Q: Is this kit compatible with the KTM 250 SX? A: Yes, it fits all KTM 250 2-stroke models from 2017 to 2021, including the SX and XC variants.
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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