2Bros Parts

PISTON KIT 81-14 PW50 40.00, NAMURA NX-40005 YAMAHA

£49.39

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UK delivery £4.99, free over £60 2–4 business days

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Namura Piston Assembly NX-40005. This piston kit features an 81-14 PW50 40.00 bore. Namura pistons are manufactured to exact OEM specifications and serve as direct replacements without requiring modifications. They are constructed from high-silicon aluminum, feature anodized domes, and have MOS2 (Molybdenum/Teflon) skirt coatings. Each piston kit includes individually wrapped pistons, OEM quality rings packed in their own box, wrist pins, and circlips. Namura rings are produced by Riken, the largest OEM manufacturer globally, and are the same OEM rings used on most motorcycles and ATVs. Available in A, B, and C sizes to help prolong the life of Nikasil, SCEM, Boron Composite, and Ceramic Cylinders.

Specifications
SKU
56-W938+000.NT
Brand
Namura Technologies
Availability
In Stock (3)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
40.00mm
Variant Id
258277
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Namura Piston Kit - 40mm Bore

This Namura piston assembly is designed as a direct replacement for your original equipment, ensuring a perfect fit without the need for modifications. Manufactured to exact OEM specifications, this piston kit is built for reliability and performance.

Key Features:

  • Precision Bore Size: 40.00mm diameter for a precise fit.
  • MOS2 Skirt Coating: Features Molybdenum/Teflon skirt coatings for reduced friction and improved durability.
  • High-Silicon Aluminum: Constructed from high-silicon aluminum alloy for enhanced strength and heat resistance.
  • Anodized Dome: The piston dome is anodized for increased protection and longevity.
  • Complete Kit: Each kit includes the piston, individually wrapped for protection, OEM quality rings packed separately, wrist pin(s), and circlips.
  • OEM Quality Rings: Namura rings are produced by Riken, the world's largest OEM manufacturer, ensuring the same quality found on numerous motorcycles and ATVs.
  • Graded Pistons Available: A, B, and C size pistons are offered, which can help extend the service life of advanced cylinder types like Nikasil, SCEM, Boron Composite, and Ceramic cylinders.
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UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. 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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