2Bros Parts

PISTON KIT 05-09 CR250 66.40 B, PROX 01.1325.A1 HONDA MX

$171.87

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Delivery to United States 5–8 business days

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ProX Piston Kit B 66.40mm Bore. Precision machined on state-of-the-art CNC equipment using a low-expansion, low-friction piston alloy similar to that used by major Japanese engine manufacturers. This kit offers a first-class solution to replace the original piston. Features OEM style Tin coating to assist the wear-in process and a new skirt coating that reduces friction after wear-in, increasing performance. Nominal piston size is 66.35mm. Includes replacement parts PROX RING SET 02.1325, PROX PISTON PIN 04.1856, and PROX CLIPS 05.1812. Manufacturer part number 01.1325.A1.

Specifications
SKU
56-W860+00B.PX
Brand
Pro-X Racing
Availability
In Stock (2)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
66.40mm
Variant Id
258098
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

ProX Piston Kit - High Performance Replacement

Upgrade your engine with the ProX Piston Kit, engineered for exceptional performance and durability. This premium piston is precision machined using state-of-the-art CNC equipment, utilizing the same advanced low-expansion, low-friction alloy trusted by major Japanese engine manufacturers. ProX Piston Kits offer a superior solution for replacing original pistons in your motorcycle, scooter, moped, ATV, or personal watercraft.

This kit features a special coating designed to optimize performance and engine life. The OEM-style tin coating aids in the crucial break-in process, while a newly developed skirt coating not only assists with wear-in but also actively reduces friction once the engine is running. This advanced black coating, crafted from a specialized material blend, is proven to enhance overall performance.

Key Features:

  • Precision machined from a low-expansion, low-friction alloy.
  • Utilizes the same high-quality materials as leading Japanese manufacturers.
  • Features advanced skirt coating for reduced friction and improved performance.
  • Includes OEM-style tin coating to aid in the initial engine wear-in process.
  • A first-class replacement part for your powersports vehicle.

Replacement Parts Available:

  • ProX Ring Set
  • ProX Piston Pin
  • ProX Clips

Piston Nominal Size: 66.35mm

Kit Bore Size: 66.40mm

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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