Yamaha WR 125 [VERTEX] – Piston Set (Forged Race)

VERTEX piston set (forged race) for Yamaha WR 125

The VERTEX piston set is specially designed for the 2-stroke engine of the Yamaha WR 125. It consists of a forged aluminum piston and matching piston rings, which are delivered together as a kit. The design as a race forged piston ensures high resilience and longevity in engine operation.

Technical features

• Piston design: Race forged pistons
• Piston material: Forged aluminum alloy
• Coating of piston skirt: Molybdenum disulfide for reduced friction
• Piston diameter: 53.94mm (standard size B)
• Bore size: 54.00mm
• Piston rings: Cast steel with nitride coating
• Compression ratio: Default
• Displacement: 125cc
• Engine type: 2-stroke engine
• Scope of delivery: Piston set (piston and rings)

Product description

The piston set is designed for use in the engine of the Yamaha WR 125 and corresponds to the manufacturer's standard dimensions. The use of a forged aluminum piston increases stability and allows for better heat dissipation. The molybdenum disulfide coating on the piston skirt reduces wear and improves sliding in the cylinder barrel.

The piston rings are made of cast steel with a nitride coating, which ensures high wear resistance. The kit contains all the necessary components for replacing the piston and rings to ensure optimal engine performance and reliability.

The piston set is designed for the standard displacement of 125 cc and fits exactly to the 54.00 mm bore of the Yamaha WR 125. The compression ratio remains unchanged, so no adjustments to the engine are necessary.

Thanks to the precise manufacturing and high-quality materials, the piston set is suitable for use in series engines as well as for moderate performance increases in racing.