Namura Standard Bore Top End Repair Kit Size A for KTM 50 SX 2009-2023 39.5mm

Standard Bore Top End Repair Kit Size A for KTM

The Namura Standard Bore Top End Repair Kit Size A is a complete top end rebuild set designed for KTM 50 SX models from 2009 to 2023, featuring a 39.5mm bore.

Overview

This standard bore top end repair kit from Namura includes everything needed to restore compression and performance in the KTM 50 SX. Each top end repair kit is precision-engineered to match OEM specifications, ensuring a reliable rebuild for 2009-2023 models. The 39.5mm bore size A provides the correct fit for standard cylinder applications.

Built For Performance

• Includes piston, rings, wrist pin, and circlips
• Precision-machined from high-strength aluminum alloy
• Rings designed for optimal sealing and reduced blow-by
• Kit includes all necessary gaskets for top end assembly
• Meets or exceeds OEM specifications for fit and performance

Fits These Machines

• for KTM 50 SX (2009-2023)

On-The-Job Use

• Used during top end rebuilds to restore lost performance
• Ideal for motocross and off-road racing applications
• Commonly installed when replacing worn piston and rings
• Suitable for both amateur and professional mechanics

Specs At A Glance

Good To Know

Q: Does this kit include the cylinder? A: No, this is a top end repair kit that includes piston, rings, and gaskets, but not the cylinder itself.

Q: Will this fit a 2015 KTM 50 SX? A: This kit is designed for 2009-2023 KTM 50 SX models, so it should fit a 2015 as long as the bore size matches.

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