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

Standard Bore Top End Repair Kit Size B for Namura for KTM 50 SX

This Standard Bore Top End Repair Kit Size B from Namura is a complete top end repair assembly for the KTM 50 SX, offering a 39.5mm bore for 2009-2023 models.

Overview

The Standard Bore Top End Repair Kit Size B for Namura for KTM 50 SX delivers a direct-fit cylinder and piston set designed to restore lost compression and power. This top end repair kit includes all necessary components for a thorough engine rebuild, making it ideal for riders who need reliable performance from their KTM 50 SX dirt bike. The kit's 39.5mm bore matches the original specification exactly.

Built For Performance

• Precision-machined piston from high-strength aluminum alloy
• Chrome-plated cylinder bore for reduced friction and improved wear resistance
• Complete gasket set ensures a leak-free seal during installation
• Wrist pin and clips included for a full top end refresh
• Each component is verified to meet original size specifications

Fits These Machines

• for KTM 50 SX (2009-2023)

On-The-Job Use

• Motocross racing where consistent power delivery is critical
• Trail riding and competitive enduro events requiring engine durability
• Engine rebuilds after extended use or piston wear
• Pit garage maintenance for weekend racers

Specs At A Glance

Good To Know

Q: What is included in this top end repair kit? A: The kit includes a piston, rings, wrist pin, clips, and a complete gasket set for a full top end replacement.

Q: How does Size B differ from other sizes? A: Size B is one of the standard bore increments for this engine; each size corresponds to a specific piston diameter within the same bore range.

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