2Bros Parts

KTM SX / EXC 125 1994-1997 GRADE A 54.19mm

$197.49

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Delivery to United States 5–8 business days

Out of Stock

Vertex pistons are manufactured using Low-Ex aluminum alloys with 12%, 18%, or 21% silicon depending on the application. Pistons are made using gravity cast or hydraulic forging processes, followed by heat treatment in an automatic HT implant with solubilization by quench in hot water. Machining is performed using CNC machines and diamond tools to achieve specific surface finishes. Each Vertex piston undergoes manual and automatic quality control. Pistons are coated with Molybdenum Bisulphite for break-in and friction reduction. A new Phosphate Coating is also available, offering increased hardness and superior adhesion of the Molybdenum Coating for extended durability. This piston is GRADE A and measures 54.19mm.

Specifications
SKU
V.2361A
Brand
Vertex
Availability
Out of Stock
SKU
V.2361A
Brand
Vertex
Availability
Out of Stock
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Vertex Grade A Piston 54.19mm

Maintain peak engine performance with the Vertex Grade A Piston, specifically engineered for high-performance two-stroke applications. Vertex is a world-leading manufacturer known for utilizing advanced metallurgical processes to create pistons that offer superior durability and heat resistance under the most demanding conditions.

Each piston is crafted from exotic Low-Ex (low expansion) silicon-charged aluminium alloys, with silicon content specifically selected for your engine's requirements. These blanks are produced through high-precision gravity casting or hydraulic forging, then refined using a sophisticated, automated heat treatment process to ensure maximum structural integrity and resilience.

Key Features:

  • Precision Engineering: Machined using state-of-the-art CNC technology and diamond-tipped tools to achieve exact surface finishes and tolerances.
  • Advanced Coating Technology: Features a Molybdenum Bisulphite black coating to reduce friction during the critical break-in period and throughout the piston lifecycle.
  • Phosphate Coating: Incorporates a specialized phosphate base layer that increases surface hardness and improves the adhesion of the Molybdenum coating, doubling its overall durability.
  • Quality Assurance: Every unit undergoes rigorous manual and automated quality control inspections to meet the highest performance standards.
  • Optimal Performance: Designed to provide excellent sealing, reduced wear, and consistent power delivery for your engine.

Whether you are performing a routine rebuild or preparing for competitive racing, this Vertex piston provides the reliability and performance benefits found in top-tier motorsport engines. Replace your worn components with premium Vertex hardware to restore factory-level efficiency and 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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Out of stock