2Bros Parts

YAMAHA YZ 250 1999-2022 GRADE A 66.34mm TWIN RING PISTON

$224.75Only 1 left

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Delivery to United States 5–8 business days

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Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18% or 21% silicon, depending on the application. These pistons are produced using gravity casting or hydraulic forging, followed by a heat treatment process for material refinement. Machining is performed on CNC machines with diamond tooling to achieve specific surface finishes. Each Vertex piston undergoes manual and automatic quality control. The pistons are coated with Molybdenum Bisulphite for break-in and friction reduction, and also feature a new Phosphate Coating for increased hardness, surface porosity, and enhanced coating durability. This product is a twin ring piston with a 66.34mm bore.

Specifications
SKU
V.2584A
Brand
Vertex
Availability
In Stock (1)
SKU
V.2584A
Brand
Vertex
Availability
In Stock (1)
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

High-Performance Vertex Twin Ring Piston

Upgrade your engine performance with this precision-engineered Vertex Grade A Twin Ring Piston. Designed for riders who demand reliability and power, this 66.34mm piston is crafted using advanced metallurgy and manufacturing techniques to ensure optimal combustion efficiency and engine longevity.

Advanced Materials and Engineering

Vertex pistons are manufactured from high-quality Low-Ex (low expansion) silicon-charged aluminium alloys. This material choice ensures superior structural integrity and thermal resistance. Through a refined gravity cast or hydraulic forging process, followed by cutting-edge heat treatment, these pistons provide exceptional durability under the high-stress conditions of motorcycling.

Key Features

  • Precision Machining: Produced using state-of-the-art CNC machinery and diamond tooling for exact surface finishes and perfect tolerances.
  • Enhanced Coating Technology: Features a Molybdenum Bisulphite black coating to assist with the break-in process and significantly reduce internal friction.
  • Phosphate Coating: Utilizes advanced Formula One-inspired phosphate coating technology to provide increased surface hardness and superior adhesion for the Molybdenum layer, effectively doubling its durability.
  • Rigorous Quality Control: Every unit undergoes strict manual and automatic inspections to maintain the highest quality standards.
  • Twin Ring Design: Engineered to provide an excellent seal, maintaining compression and power throughout the RPM range.

Superior Performance and Longevity

Whether you are competing on the track or enjoying off-road performance, this Vertex piston is built to withstand the rigors of high-performance use. The combination of its heat-treated alloy structure and specialized coatings makes it a premier choice for engine rebuilds, offering improved friction reduction and extended service life.

Before you buy

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.

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