YAMAHA YZ 125 2005-2021 GRADE B 53.94mm SINGLE RING PISTON

Vertex Grade B 53.94mm Single Ring Piston

The Vertex Grade B Single Ring Piston is engineered for high performance and durability, utilizing exotic Low-Expansion (Low-Ex) silicon-charged aluminium alloys. By incorporating 12%, 18%, or 21% silicon content depending on the specific application, these pistons offer superior structural integrity and thermal resistance.

Vertex employs advanced manufacturing processes, including gravity casting or hydraulic forging, followed by a precision-controlled heat treatment cycle. This ensures a refined material structure that meets the rigorous demands of competitive engine performance.

Key Features:

• Precision Machining: Produced using state-of-the-art CNC technology and diamond tooling for exact surface finishes.
• Advanced Coatings: Features a Molybdenum Bisulphite black coating to assist in the break-in process and reduce internal friction.
• Phosphate Coating: Includes an all-over phosphate treatment that increases surface hardness and provides light porosity for superior adhesion of the Molybdenum coating, significantly extending durability.
• Quality Assurance: Every piston undergoes a thorough manual and automatic quality control inspection to ensure peak performance standards.
• Specific Sizing: Grade B piston with a 53.94mm diameter designed for optimal cylinder clearance.

Whether you are performing a routine rebuild or a high-performance engine upgrade, this Vertex piston provides the reliability and technical advancement required for consistent power delivery.