ProX Piston Kit, 39.47 mm for Gas Gas, Husqvarna and KTM (01.6019.B)

The PROX 01.6019.B Piston Kit is an OEM replacement solution for select Gas Gas, Husqvarna, and KTM motorcycles. Manufactured in Japan, this kit is designed to support dependable engine performance, proper fitment, and long-lasting service in applications requiring a 39.47 mm piston. It is built for riders and technicians seeking replacement components made to consistent production standards.
The piston is cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications. This material helps provide strength, durability, and stable performance under demanding operating conditions. Each piston is CNC-machined to extremely close tolerances, helping promote accurate fitment and reliable interaction with the cylinder, rings, wrist pin, and related engine components.
The PROX 01.6019.B kit includes the piston, ring kit, wrist pin, and circlips for a convenient engine rebuild or replacement installation. Supplied components are matched to support a straightforward service process while helping restore compression and engine function. Always verify motorcycle year, model, engine specifications, and existing component measurements before installation to ensure proper application.
Feature: OEM replacement design for select Gas Gas, Husqvarna, and KTM motorcycles.
Feature: Manufactured in Japan for consistent quality and production control.
Feature: Cast from high-silicon-content aluminum alloy meeting or exceeding OEM specifications.
Feature: CNC-machined to extremely close tolerances for accurate fitment.
Feature: Kit includes piston, ring kit, wrist pin, and circlips.

Features:

• OEM replacement design for select Gas Gas, Husqvarna, and KTM motorcycles.

• Manufactured in Japan for consistent quality and production control.

• Cast from high-silicon-content aluminum alloy meeting or exceeding OEM specifications.

• CNC-machined to extremely close tolerances for accurate fitment.

• Kit includes piston, ring kit, wrist pin, and circlips.

Ships from Parts Unlimited.