2Bros Parts

PISTON KIT 87-06 YFZ350 65.00, NAMURA NA-40001-4 YAMAHA

£70.43

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Piston Assembly 65.00mm Bore NA-40001-4. High-performance Namura pistons engineered in the USA, 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 reduce friction and heat for added power and longevity. Namura rings match OEM design except as noted.

Specifications
SKU
56-W515.100.NT
Brand
Namura Technologies
Availability
In Stock (9)

Fitments (38)

MakeModelYear
YAMAHARD 3501982
YAMAHARD 3501983
YAMAHARD 3501984
YAMAHARD 3501985
YAMAHARD 3501986
YAMAHARD 3501987
YAMAHARD 3501988
YAMAHARD 3501989
YAMAHARD 3501990
YAMAHARZ 3501982
YAMAHARZ 3501983
YAMAHARZ 3501984
YAMAHARZ 3501985
YAMAHARZ 3501986
YAMAHARZ 3501987
YAMAHARZ 3501988
YAMAHARZ 3501989
YAMAHARZ 3501990
YAMAHAYFZ BANSHEE 3501987
YAMAHAYFZ BANSHEE 3501988
YAMAHAYFZ BANSHEE 3501989
YAMAHAYFZ BANSHEE 3501990
YAMAHAYFZ BANSHEE 3501991
YAMAHAYFZ BANSHEE 3501992
YAMAHAYFZ BANSHEE 3501993
YAMAHAYFZ BANSHEE 3501994
YAMAHAYFZ BANSHEE 3501995
YAMAHAYFZ BANSHEE 3501996
YAMAHAYFZ BANSHEE 3501997
YAMAHAYFZ BANSHEE 3501998
YAMAHAYFZ BANSHEE 3501999
YAMAHAYFZ BANSHEE 3502000
YAMAHAYFZ BANSHEE 3502001
YAMAHAYFZ BANSHEE 3502002
YAMAHAYFZ BANSHEE 3502003
YAMAHAYFZ BANSHEE 3502004
YAMAHAYFZ BANSHEE 3502005
YAMAHAYFZ BANSHEE 3502006
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
65mm
Variant Id
256652
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Namura Technologies Piston Kit - 65.00mm Bore

This high-performance piston assembly from Namura Technologies is engineered in the USA and manufactured in Taiwan. It features a 65.00mm bore and is designed to enhance your engine's performance and longevity.

Key Features:

  • High-Silicon Content Hypereutectic Cast Aluminum: This advanced material offers reduced heat expansion, tighter clearances, increased hardness, longer life, and reduced scuffing.
  • Machined Smooth Piston Crowns: Designed for reduced carbon buildup, leading to increased horsepower and improved fuel economy.
  • Hard Anodized Crowns: These crowns are 75% stronger than non-anodized versions, providing minimal expansion and reducing the risk of cold seizures when paired with coated skirts.
  • MOS2 (Teflon/Molybdenum) Coated Skirts: These specialized coatings perform at the highest standards, reducing friction and heat for added power and extended engine life.
  • Matching Rings: Namura rings are designed to match OEM specifications for reliable performance.
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.

Call us0330 133 3748
Email us[email protected]

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.

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

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.

More answers in our FAQ.

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