YAMAHA YZ 125 2005-2021 +2.00mm OVERSIZE 55.95mm SINGLE RING PISTON
4.4 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with 
Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18%, or 21% silicon content depending on the application. They are produced using gravity casting or hydraulic forging, followed by heat treatment in an automatic HT implant with solubilization by hot water quench. Machining is performed using the latest CNC machines and software with diamond tools, achieving specific surface finishes. Every Vertex piston undergoes rigorous manual and automatic quality control. Vertex pistons feature a special Molybdenum Bisulphite black coating for break-in and friction reduction. A new Phosphate Coating, developed following Formula One engine advancements, offers increased hardness and surface porosity for superior Molybdenum Coating adhesion and durability. This piston is +2.00mm oversize with a 55.95mm diameter.
- SKU
- V.3119.200
- Brand
- Vertex
- Availability
- In Stock (1)
- SKU
- V.3119.200
- Brand
- Vertex
- Availability
- In Stock (1)
FULL DESCRIPTION
Vertex Oversize Single Ring Piston
Restore your engine performance with this precision-engineered Vertex +2.00mm oversize piston. Designed for high-performance applications, this 55.95mm piston is manufactured using premium Low-Ex silicon-charged aluminium alloys, chosen for their superior strength and low thermal expansion characteristics.
Every Vertex piston undergoes a sophisticated production process, utilizing either gravity casting or hydraulic forging to create a robust foundation. The internal material structure is then refined through a state-of-the-art heat treatment process, ensuring maximum durability and longevity under heavy engine loads.
Key Features
- Precision Machining: Crafted using advanced CNC technology and diamond tooling to achieve exact tolerances and specific surface finishes.
- Advanced Coatings: Features a Molybdenum Bisulphite black coating to assist with the break-in process and minimize internal friction during operation.
- Enhanced Durability: Incorporates a phosphate coating that increases surface hardness and improves the adhesion of the Molybdenum coating, significantly extending component life.
- Rigorous Quality Control: Each piston is subjected to both manual and automatic inspection processes to ensure the highest standards of quality and performance.
- High-Tech Material: Manufactured with silicon-charged alloys that are treated in automatic heat treatment plants for optimal structural integrity.
This single ring piston is an ideal choice for engine rebuilds requiring an oversize bore, providing a reliable and efficient solution for maintaining factory-level power and responsiveness.
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
Call or email us with your make, model and year and we will check it for you before you order.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.