Namura Standard Bore Size A Top End Kit for KTM 250 SX MXC EXC 66.4mm SEE YEARS

Namura Standard Bore Size A Top End Kit for KTM

This Namura standard bore size A top end kit is a complete replacement assembly for KTM 250 SX, MXC, and EXC models, providing a reliable piston, rings, wrist pin, and gasket set to restore performance (OEM cross-reference numbers not cited in title).

Overview

This Namura standard bore size A top end kit delivers a complete piston and gasket set for KTM 250 SX, MXC, and EXC models with a 66.4mm bore, restoring compression and power. The top end kit includes all necessary components for a direct replacement rebuild, ensuring a dependable fix for off-road and motocross use.

Built For Performance

• Standard bore size A piston at 66.4mm for precise fitment
• Includes piston, rings, wrist pin, and circlips for a complete top end
• Full gasket set included for a hassle-free rebuild
• Constructed from high-strength aluminum alloy for durability
• Designed to meet OEM specifications for reliable operation

Fits These Machines

• for KTM 250 SX
• for KTM 250 MXC
• for KTM 250 EXC

On-The-Job Use

• Restores top-end performance in worn KTM 250 two-stroke engines
• Ideal for motocross racing and trail riding applications
• Suitable for engine rebuilds during routine maintenance cycles

Specs At A Glance

Good To Know

Q: Does this kit include a gasket set? A: Yes, this Namura top end kit includes a full gasket set for the cylinder and head, allowing for a complete top-end rebuild.

Q: What is the bore size of this piston? A: The piston is a standard bore size A at 66.4mm, which is the factory specification for KTM 250 models.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.