2Bros Parts

HONDA CR 250 2005-2007 GRADE A 66.34mm SINGLE RING RACE PISTON

$242.51

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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 content depending on the application. The pistons are made using gravity cast or hydraulic forging processes, and the material structure is refined using a hi-tech heat treatment. Machining is completed using the latest CNC machines and software with diamond tools. A special Molybdenum Bisulphite black coating is applied to aid break-in and reduce friction. Vertex also offers a new Phosphate Coating which increases hardness and surface porosity for superior adhesion and durability.

Specifications
SKU
V.3133A
Brand
Vertex
Availability
In Stock (5)
SKU
V.3133A
Brand
Vertex
Availability
In Stock (5)
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Vertex Grade A 66.34mm Single Ring Race Piston

Enhance the performance and reliability of your engine with the Vertex Grade A 66.34mm single ring race piston. Engineered for competitive racing applications, this piston is designed to provide optimal combustion efficiency and superior durability under high-stress conditions.

Vertex utilizes exotic Low-Ex silicon-charged aluminium alloys, available in 12%, 18%, or 21% concentrations depending on the specific application requirements. These pistons are produced through precision gravity casting or hydraulic forging, followed by a state-of-the-art heat treatment process. This involves automated solubilization and hot water quenching to ensure a refined material structure and exceptional structural integrity.

Key Features

  • Precision Engineering: Machined using advanced CNC technology and diamond tooling for exact tolerances and superior surface finishes.
  • Advanced Coating: Finished with a Molybdenum Bisulphite black coating to reduce friction and assist during the initial engine break-in period.
  • Enhanced Durability: Features an all-over phosphate coating that increases surface hardness and provides light porosity for superior adhesion of the Molybdenum layer, effectively doubling the durability of the coating.
  • Quality Assurance: Each piston undergoes rigorous manual and automatic quality control inspections to meet professional racing standards.
  • Race Ready: Single ring design specifically optimized for high-performance power delivery and reduced drag.

Whether you are performing a top-end rebuild or preparing for a race season, this Vertex piston offers the technology and consistency needed to maintain peak engine performance.

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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