2Bros Parts

PISTON KIT 02-04 CR250 66.40 B, NAMURA NX-10027-B HONDA CR250

$85.14

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Delivery to United States 5–8 business days

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Namura Piston Assembly - 66.40mm Bore - B NX-10027-B. 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. Namura rings match OEM design. Fractional oversize pistons, available for some applications, extend the life of your cylinder by renewing the original clearance if it's slightly worn. Piston assemblies include ring(s), wrist pin, and circlips.

Specifications
SKU
56-W801+00B.NT
Brand
Namura Technologies
Availability
In Stock (9)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
66.40mm
Variant Id
257796
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Namura Piston Assembly - 66.4mm Bore - B

This high-performance Namura piston assembly is engineered in the USA and manufactured in Taiwan. It features a 66.4mm bore size with a B fractional oversize designation.

Key Features:

  • Material: Constructed from high-silicon content Hypereutectic cast aluminum for reduced heat expansion, tighter clearances, increased hardness, and longer life.
  • Crown Design: Machined, smooth piston crowns minimize carbon buildup, enhancing horsepower and fuel economy.
  • Hard Anodized Crowns: Offer 75% greater strength than non-anodized versions, providing minimal expansion and reducing the risk of cold seizures.
  • MOS2 Skirt Coating: Features a Teflon/Molybdenum coating on the piston skirts for reduced friction and optimal performance, meeting the highest industry standards.
  • OEM Style Rings: Namura rings are designed to match OEM specifications.
  • Oversize Pistons: The -B designation indicates a 0.0004 inch fractional oversize, ideal for renewing original cylinder clearance if slightly worn, potentially avoiding costly sleeve installations.
  • Complete Assembly: Includes piston, rings, wrist pin, and circlips.
Before you buy

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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

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