Tecnium Piston Kit Ø56.25mm Cylinder kitYAMAHA 250 TDR 250 - 1988 - 1992Ref : TE20631A / 3030198

Replace the worn piston of your Yamaha 2-stroke with this TECNIUM Piston Kit Ø56.25mm, designed for TDR and TZR250 models. Manufactured by TECNIUM, this kit is aimed at riders undertaking a top-end rebuild or a restoration after significant wear and boring.

Key points:

• Compatibility: Yamaha TDR / TZR250 — indicated diameter: 56.25 mm.
• Usage: intended for piston replacement during a re-boring or engine overhaul.
• Brand: TECNIUM. Manufacturer reference: Not disclosed.

This kit integrates into standard engine repair operations: cylinder bore inspection, checking the skirt and piston-wall clearance, assembly, and break-in according to manufacturer recommendations. It is recommended to perform the installation with suitable tools and, if necessary, to entrust the operation to a professional to ensure proper ring fitting, initial lubrication, and correct top-end timing.

Before ordering, check the engine reference and the condition of the cylinder to ensure compatibility. In case of doubt, seek the advice of a motorcycle mechanic to avoid any incompatibility when restarting.