2Bros Parts

KTM SX / EXC 125 1998-2000 GRADE A 54.19mm

$189.48

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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. They are produced via gravity cast or hydraulic forging, followed by a heat treatment process using an automatic HT implant with solubilization by quench in hot water. Machining is performed using the latest CNC machines, software, and diamond tools, allowing for specific surface finishes. Each Vertex piston undergoes rigorous manual and automatic quality control. Pistons are coated with a special Molybdenum Bisulphite black coating to aid break-in and reduce friction. A newer Phosphate Coating, developed following Formula One engine advancements, offers increased hardness, light surface porosity, and superior adhesion for enhanced coating durability. This piston is 54.19mm in size.

Specifications
SKU
V.2532A
Brand
Vertex
Availability
In Stock (2)
SKU
V.2532A
Brand
Vertex
Availability
In Stock (2)
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Vertex Grade A High Performance Piston 54.19mm

The Vertex Grade A piston is engineered for riders who demand precision, durability, and peak engine performance. Crafted using advanced metallurgy and state of the art manufacturing processes, this piston is designed to meet the rigorous demands of high performance engines.

Vertex utilizes proprietary Low Expansion (Low-Ex) silicon charged aluminium alloys, ranging from 12% to 21% silicon content depending on the application. Each piston undergoes a refined gravity cast or hydraulic forging process, followed by a cutting edge heat treatment in an automatic implant to ensure superior material structural integrity.

Key Features and Engineering

  • Precision Machining: Every piston is finished using the latest CNC technology and diamond tipped tools to ensure exact tolerances and specific surface finishes tailored to your engine.
  • Advanced Surface Coatings: Features a specialized Molybdenum Bisulphite black coating that significantly reduces friction and aids in a smoother break in process.
  • Phosphate Coating Technology: Inspired by Formula One engine developments, the new phosphate coating provides increased hardness and surface porosity. This allows for superior adhesion of the Molybdenum coating, doubling its overall durability.
  • Rigorous Quality Control: Every unit undergoes strict manual and automatic inspections to guarantee that only the highest quality components reach your engine.

This 54.19mm Grade A piston offers an ideal balance of weight and strength, making it an excellent choice for engine rebuilds where reliability and power delivery are the top priorities.

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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