Yamaha YZ 426 [PROX] – forged piston set

PROX forged piston set for Yamaha YZ 426

The PROX forged piston set is specially designed for the 4-stroke engine of the Yamaha YZ 426. This set contains a piston and matching piston rings designed for standard size B with a piston diameter of 94.96 mm. The pistons are made from a high quality aluminum alloy and forged to ensure high strength and durability.

Technical characteristics

• Piston size: Standard size B
• Piston diameter: 94.96mm
• Piston material: Forged aluminum alloy
• Piston ring material: Steel
• Compression ratio: 12,5:1
• Engine type: 4-stroke
• Scope of delivery: Piston set (piston + rings)

The use of forged aluminum offers improved thermal conductivity and high resistance to mechanical stress compared to traditional cast pistons. The steel rings are precisely manufactured to guarantee optimal sealing and wear resistance.

Function and area of application

The forged piston set is suitable for replacing or repairing the engine of the Yamaha YZ 426. It helps restore engine performance and helps extend engine life. The compression ratio of 12.5:1 is tailored to the engine characteristics and ensures efficient combustion.

This piston set is part of the Engine Group and is supplied as a complete kit, making installation easier and ensuring an optimal fit. The combination of high-quality material and precise manufacturing makes the PROX forged piston set a reliable component for the 4-stroke engine of the Yamaha YZ 426.