2Bros Parts

PISTON 94-00 POLARIS 300 75.50, NAMURA NA-50003-4 KIT ATV

$92.08

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Delivery to United States 5–8 business days

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Namura Piston Assembly. 75.50mm Bore. NA-50003-4. High-performance Namura pistons engineered in the USA, manufactured in Taiwan. High-silicon content Hypereutectic cast aluminum material for less heat expansion, tighter clearances, increased hardness, longer life and reduced scuffing. 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 the OEM design. Fractional oversize pistons available for some applications to extend cylinder life by renewing original clearance. Weight: 436g.

Specifications
SKU
56-W164_100.NT
Brand
Namura Technologies
Availability
In Stock (4)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
75.5mm
Variant Id
254797
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Namura Piston Assembly - 75.50mm Bore

Enhance your vehicle's performance and longevity with this high-performance Namura Piston Assembly. Engineered in the USA and manufactured in Taiwan, this piston is designed for superior operation and durability.

Key Features:

  • Material: Constructed from high-silicon content Hypereutectic cast aluminum for reduced heat expansion, tighter clearances, increased hardness, longer life, and reduced scuffing.
  • Piston Crown: Features machined, smooth piston crowns designed to reduce carbon buildup, increasing horsepower and fuel economy.
  • Hard Anodized Crowns: Offer 75% greater strength than non-anodized crowns, providing minimal expansion and reducing the risk of cold seizures, especially when paired with Teflon/Molybdenum coated skirts.
  • MOS2 Coated Skirts: Teflon/Molybdenum coated skirts ensure top performance by reducing friction and heat, contributing to added power and extended longevity.
  • Ring Design: Namura rings are designed to match OEM specifications.
  • Oversize Options: Fractional oversize pistons (-B and -C) are available for select applications, allowing you to extend the life of your cylinder by restoring original clearances.
  • Bore Size: 75.50mm
Before you buy

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

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

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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