2Bros Parts

PISTON KIT 05-08 KX250 66.40 C, NAMURA NX-20029-C

$77.82

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Delivery to United States 5–8 business days

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PISTON KIT 66.40MM BORE. Piston assemblies include ring(s), wrist pin and circlips. High-performance Namura pistons are engineered in the USA and manufactured in Taiwan using high-silicon content hypereutectic cast aluminum material for less heat expansion, tighter clearances, increased hardness, longer life, and reduced scuffing. Features machined, smooth piston crowns for reduced carbon buildup, increased horsepower, and fuel economy. Hard anodized crowns are 75% stronger than non-anodized, providing minimal expansion and reducing the chance of cold seizures when combined with Teflon/Molybdenum coated skirts. MOS2 (Teflon/Molybdenum) coated skirts perform at the highest standards, reducing friction and heat. State-of-the-art CNC equipment and low-expansion, low-friction piston alloy are used, the same used by major Japanese engine manufacturers. Uses an OEM style tin coating to assist the break-in process. Fractional oversize pistons, available for some applications, extend the life of your expensive cylinder by renewing the original clearance if it's slightly worn, avoiding an expensive sleeve installation.

Specifications
SKU
56-W844.C.NT
Brand
Namura Technologies
Availability
In Stock (3)

Fitments (62)

MakeModelYear
KAWASAKIKX 2501993
KAWASAKIKX 2501994
KAWASAKIKX 2501995
KAWASAKIKX 2501996
KAWASAKIKX 2501997
KAWASAKIKX 2501998
KAWASAKIKX 2501999
KAWASAKIKX 2502000
KAWASAKIKX 2502001
KAWASAKIKX 2502002
KAWASAKIKX 2502003
KAWASAKIKX 2502004
KAWASAKIKX 2502005
KAWASAKIKX 2502006
KAWASAKIKX 2502007
KAWASAKIKX 2502008
KAWASAKIKX 2502009
KTM250 SX2003
KTM250 SX2004
KTM250 SX2005
KTM250 SX2006
KTM250 SX2007
KTM250 SX2008
KTM250 SX2009
KTM250 SX2010
KTM250 SX2011
KTM250 SX2012
KTM250 SX2013
KTM250 SX2014
KTM250 SX2015
KTM250 SX2016
SUZUKIRM 2502003
SUZUKIRM 2502004
SUZUKIRM 2502005
SUZUKIRM 2502006
SUZUKIRM 2502007
SUZUKIRM 2502008
SUZUKIRM 2502009
SUZUKIRM 2502010
YAMAHAYZ 2501999
YAMAHAYZ 2502000
YAMAHAYZ 2502001
YAMAHAYZ 2502002
YAMAHAYZ 2502003
YAMAHAYZ 2502004
YAMAHAYZ 2502005
YAMAHAYZ 2502006
YAMAHAYZ 2502007
YAMAHAYZ 2502008
YAMAHAYZ 2502009
YAMAHAYZ 2502010
YAMAHAYZ 2502011
YAMAHAYZ 2502012
YAMAHAYZ 2502013
YAMAHAYZ 2502014
YAMAHAYZ 2502015
YAMAHAYZ 2502016
YAMAHAYZ 2502017
YAMAHAYZ 2502018
YAMAHAYZ 2502019
YAMAHAYZ 2502020
YAMAHAYZ 2502021
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
66.40mm
Variant Id
258002
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Namura Piston Kit for High Performance and Longevity

This Namura Piston Kit is engineered for superior performance and durability. Manufactured with a high-silicon content hypereutectic cast aluminum material, these pistons offer reduced heat expansion, tighter clearances, increased hardness, and a longer lifespan with reduced scuffing.

Key Features:

  • Precision Machined Crowns: Smooth piston crowns are machined to reduce carbon buildup, enhancing horsepower and fuel economy.
  • Hard Anodized Crowns: Offer 75% greater strength than non-anodized versions, minimizing expansion and reducing the risk of cold seizures.
  • MOS2 Coated Skirts: Teflon/Molybdenum coated skirts operate at the highest standards, effectively reducing friction and heat.
  • Advanced Manufacturing: Utilizes state-of-the-art CNC equipment and a low-expansion, low-friction piston alloy favored by major Japanese engine manufacturers.
  • OEM Style Tin Coating: Assists in the break-in process for a smooth initial start-up.
  • Oversize Options: Fractional oversize pistons are available for select applications, allowing you to renew original clearances and extend cylinder life, avoiding costly sleeve installations.
  • Complete Assembly: Piston assemblies include all necessary rings, a wrist pin, and circlips for a straightforward installation.

Engineered in the USA and manufactured in Taiwan, Namura pistons are designed to meet the demands of high-performance engines.

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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