2Bros Parts

KTM SX 144 / 150 2007-2015 GRADE D 55.98mm

$234.57

4.4 Trustpilot 99.9% positive on eBay

Delivery to United States 5–8 business days

Spread the cost with Klarna

1

Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18% or 21% silicon, depending on the application. Pistons are made using gravity casting or hydraulic forging, followed by a heat treatment process. Machining is done with CNC machines and diamond tools for specific surface finishes. Each piston undergoes manual and automatic quality control. Vertex pistons have a Molybdenum Bisulphite black coating for break-in and friction reduction, and a new Phosphate Coating for increased hardness, surface porosity, and extended durability. This product is a Grade D 55.98mm piston.

Specifications
SKU
V.3383D
Brand
Vertex
Availability
In Stock (5)
SKU
V.3383D
Brand
Vertex
Availability
In Stock (5)
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Vertex High-Performance Piston - Grade D 55.98mm

Enhance the performance and reliability of your engine with this premium Vertex piston. Engineered for durability and precision, Vertex pistons are trusted by riders and mechanics worldwide for their ability to withstand demanding racing conditions while maintaining consistent power output.

Vertex pistons are manufactured using exotic Low-Ex (low expansion) aluminium alloys, specifically chosen for their high silicon content. This advanced material composition ensures superior dimensional stability and heat resistance. The manufacturing process utilizes either a gravity cast or hydraulic forging method, followed by a state-of-the-art heat treatment process that refines the material structure to ensure maximum strength and longevity.

Key Features:

  • Precision Engineering: Machined using the latest CNC technology and diamond-tipped tools to achieve exact tolerances and specific surface finishes for optimal performance.
  • Advanced Coatings: Features a Molybdenum Bisulphite black coating to assist with the break-in process and significantly reduce friction during operation.
  • Enhanced Durability: Incorporates a phosphate coating derived from Formula One technology. This provides a slight increase in hardness and improved surface porosity, ensuring superior adhesion of the Molybdenum coating and doubling its operational lifespan.
  • Quality Assured: Every piston undergoes a rigorous manual and automatic quality control inspection to ensure it meets the highest industry standards for reliability.

Designed for those who demand the best from their machine, this Grade D 55.98mm piston offers the perfect combination of structural integrity, reduced friction, and long-term durability. Whether you are performing a top-end rebuild or a full engine refresh, Vertex provides the professional-grade components required to keep your engine running at its peak.

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.

Trade pricing available

Buying parts for your business? Apply for a 2BrosParts trade account.

Apply for Trade
1