2Bros Parts

PISTON KIT 04-07 CRF250R 78 HC, PROX 01.1339.C HI COMP 13.5:1

$222.86

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Delivery to United States 5–8 business days

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78.00mm High Compression 13.5:1 Piston Kit. ProX pistons are precision machined on state-of-the-art CNC equipment using the same low-expansion, low-friction piston alloy used by major Japanese engine manufacturers. This kit is a first-class solution to replace the original piston. Many ProX pistons come with an OEM style Tin coating to assist in the wear-in process and a new skirt coating that helps reduce friction after wear-in, increasing performance. PROX RING SET 02.1335. SKU: 56-W4829.C.PXHC. Manufacturer: Pro-X Racing.

Specifications
SKU
56-W4829.C.PXHC
Brand
Pro-X Racing
Availability
In Stock (2)

Fitments (20)

MakeModelYear
HONDACRF 250R2004
HONDACRF 250R2005
HONDACRF 250R2006
HONDACRF 250R2007
HONDACRF 250R2008
HONDACRF 250R2009
HONDACRF 250X2004
HONDACRF 250X2005
HONDACRF 250X2006
HONDACRF 250X2007
HONDACRF 250X2008
HONDACRF 250X2009
HONDACRF 250X2010
HONDACRF 250X2011
HONDACRF 250X2012
HONDACRF 250X2013
HONDACRF 250X2014
HONDACRF 250X2015
HONDACRF 250X2016
HONDACRF 250X2017
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
78mm
Variant Id
256202
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

ProX High Compression Piston Kit

This ProX Piston Kit is designed for high-performance applications, offering a significant upgrade over standard pistons. Precision-machined using state-of-the-art CNC equipment, this kit utilizes a low-expansion, low-friction piston alloy, the same type favored by major Japanese engine manufacturers. It represents a premium solution for replacing original pistons in a variety of powersports vehicles.

Key Features:

  • High Compression Ratio: 13.5:1 for increased power and performance.
  • Optimized Piston Size: 78.00mm bore diameter.
  • Advanced Coating: Features an OEM-style Tin coating to aid the initial wear-in process. A specialized skirt coating further reduces friction after break-in, enhancing overall performance.
  • Durable Construction: Made from a premium alloy chosen for its low expansion and friction properties.
  • Complete Kit: Includes all necessary components for a professional rebuild.
  • Replacement Parts Available: Compatible with ProX Ring Set 02.1335.
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).

Check the fitment table on this page against your make, model and year. Not sure? Call or email us 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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