Namura Standard Bore Size A Top End Repair Kit for KTM 125 SX 2016-2022 54mm

Top End Repair Kit for KTM

This Namura standard bore size A top end repair kit for KTM 125 SX 2016-2022 delivers a complete piston, ring, pin, and bearing set at a 54mm bore to restore top-end performance.

Overview

This top end repair kit for KTM 125 SX models from 2016 through 2022 includes all necessary internal components to rebuild the cylinder assembly. Designed as a direct-fit 54mm standard bore kit, it replaces worn parts with fresh Namura components for reliable compression and power. Riders seeking a straightforward top end repair kit for KTM will find this kit ready for installation.

Built For Performance

• Precision-machined 54mm piston with advanced skirt coating reduces friction
• Includes wrist pin, circlips, and bearing for complete assembly
• High-quality ring set ensures consistent sealing and compression
• Matched to OEM specifications for hassle-free installation
• Namura components engineered for durability in high-revving two-stroke engines

Fits These Machines

• for KTM 125 SX 2016
• for KTM 125 SX 2017
• for KTM 125 SX 2018
• for KTM 125 SX 2019
• for KTM 125 SX 2020
• for KTM 125 SX 2021
• for KTM 125 SX 2022

On-The-Job Use

• Motocross and off-road racing engine rebuilds
• Top-end refresh for competitive two-stroke performance
• Trail riding and recreational dirt bike maintenance

Specs At A Glance

Good To Know

Q: Does this top end repair kit include a gasket set? A: No, this kit contains only the piston, rings, pin, and bearing; separate gaskets are needed for a complete rebuild.

Q: Can I use this kit with a cylinder that has been re-plated or honed? A: This is a standard bore 54mm kit, so the cylinder must be within factory specifications and not overbored for this kit to fit correctly.

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