1. Pistons, Rings & Piston Kits Products
  2. sku: 8753904929428502
  3. NAMURA NA-40004R

NAMURA TECHNOLOGIES NA-40004R Piston Rings

Na-40004r Namura Technologies Piston Rings For Pistons Only

( Brand: Namura Technologies ), ( Manufacturer Part Number: NA-40004R ), ( Part Type: Ring Piston ), ( Product Type: Piston ), ( Product Type 2: Piston Kits Components ), ( Alt Mpn 1: 186-4004r ), ( Alt Mpn 2: 40004rs ), ( Category 1: Top End Kits / Pistons / Rings ), ( Ride Type 1: Atv/utv Atv / Atc ), ( Ride Type 2: Motorcycle Adventure Touring / Dual-sport ), ( Average Delivery Time: 2-3 Days ), ( Package Weight: 0.13 ), ( Package Length: 4.30 ), ( Package Width: 4.25 ), ( Package Height: 0.40 ), ( Manufacturer Warranty: 90 Days )

Review NAMURA TECHNOLOGIES Piston Rings For Pistons Only

Introducing the Namura NA-40004R Piston Rings, specifically engineered to deliver optimal performance and durability for your piston components. These piston rings are meticulously crafted using high-quality materials and advanced manufacturing techniques to ensure a precise fit and reliable sealing.

The outer diameter of these rings measures 40mm, making them suitable for pistons of similar size. They feature a compressive ring design, which allows for a more efficient seal between the piston and the cylinder wall. The rings are also manufactured with a precise cross-sectional profile that minimizes the gap between the rings and the cylinder wall, reducing blow-by and enhancing engine efficiency.

The Namura NA-40004R Piston Rings are made from a durable and heat-resistant material, ensuring they can withstand the extreme temperatures and pressures encountered in modern engines. The rings are also coated with a special anti-wear and anti-scuffing material on the compression and oil control faces, which helps to extend their lifespan and improve engine performance.

These rings come as a complete set, including both compression and oil control rings, as well as a top ring. Each ring is precision-machined to ensure a perfect fit and alignment with the piston and cylinder components. The rings are also designed to be interchangeable between similar engines, making them a versatile and cost-effective solution for various applications.

In summary, the Namura NA-40004R Piston Rings offer a high-performance and durable solution for sealing your engine's pistons. Their compressive design provides an efficient seal, while their heat-resistant material and anti-wear coating ensure long-lasting performance. Whether you're a professional mechanic or a DIY enthusiast, these rings are an excellent choice for maintaining the optimal health of your engine.

Buying Namura NA-40004R piston rings for your pistons comes with both advantages and disadvantages. Here's a detailed analysis to help you make an informed decision.

Advantages:

1. High-Quality Material: Namura piston rings are made from high-quality materials, ensuring durability and resistance to wear and tear. They are typically made of iron alloy or steel, which can withstand the extreme temperatures and pressures inside an engine.

2. Precision Manufacturing: Namura piston rings undergo precise manufacturing processes, resulting in rings that fit perfectly into the piston grooves. Properly fitting piston rings help reduce friction, improve engine efficiency, and prevent oil leaks.

3. Enhanced Engine Performance: By using high-quality piston rings, you can expect better engine performance. Properly functioning piston rings ensure optimal compression, which leads to improved power output and fuel efficiency.

4. Reduced Engine Wear: Piston rings help prevent engine wear by sealing the combustion chamber effectively. Proper sealing prevents oil from leaking into the combustion chamber, reducing the risk of engine damage.

Disadvantages:

1. Cost: Namura piston rings tend to be more expensive than other aftermarket brands or even OEM (original equipment manufacturer) piston rings. This higher cost may not be feasible for all budgets.

2. Availability: Namura piston rings may not be readily available at local auto parts stores, requiring you to order them online. This can lead to longer wait times for the replacement parts.

3. Installation Complexity: Installing piston rings can be a complex process, requiring specialized tools and expertise. If you're not confident in your ability to install the rings yourself, you may need to pay for professional installation, which adds to the overall cost.

Conclusion:

Considering both the advantages and disadvantages, using Namura NA-40004R piston rings for your pistons can lead to improved engine performance, reduced wear, and increased durability. However, the higher cost, potential availability issues, and installation complexity may be a concern for some. If the benefits outweigh the drawbacks for your particular situation, then investing in Namura piston rings could be a worthwhile investment.

Recommendation:

If you're seeking high-performance piston rings and are willing to pay the premium price, Namura NA-40004R rings could be an excellent choice. However, if cost is a significant concern, you may want to consider other aftermarket brands or even OEM piston rings. Ultimately, the decision comes down to your engine requirements, budget, and personal preference.

Details:

RIDE TYPE 1ATV/UTV - ATV / Atc. 100% satisfaction guaranteed. Rings will fit Orig. Namura Piston Rings For Pistons Only NA-40004R:: NAMURA PISTON RINGS.

RIDE TYPE 2Motorcycle - Adventure Touring / Dual-Sport. Equipment pistons. Combined shipping available.

part #: na40004r prices

  • $25.16-$35.84

specifications pistondon:

  • brand: Namura Technologies
  • mpn: Na-40004r
  • part type: Ring Piston
  • product type: Piston
  • product type 2: Piston Kits Components
  • alt mpn 1: 186-4004r
  • alt mpn 2: 40004rs
  • category 1: Top End Kits / Pistons / Rings
  • ride type 1: Atv/utv Atv / Atc
  • ride type 2: Motorcycle Adventure Touring / Dual-sport
  • average delivery time: 2-3 Days
  • package weight: 0.13
  • package length: 4.30
  • package width: 4.25
  • package height: 0.40
  • manufacturer warranty: 90 Days

payments pistondon:

  • other
  • wallet: Paypal
  • credit card: Mastercard

general pistondon:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
  • condition: New

seller pistondon:

  • city: Hilliard, Ohio
  • # reviews: 489432
  • rating: 99.3%

shipping pistondon:

  • service: USPS Ground Advantage, FedEx 2Day, FedEx Standard Overnight
  • carrier: USPS, FedEx
  • class: Standard, Expedited, One-day
  • cost: $0.00
  • type: Calculated
  • transit: 3-7 Days

returns pistondon:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted

offer pistondon:

  • sold: 0
  • started: November 3, 2025
  • options: Ship-to-home
  • availability: In Stock
  • quantity: 4
part type: ring piston, product type: piston, product type 2: piston kits components, alt mpn 1: 186-4004r, alt mpn 2: 40004rs, category 1: top end kits / pistons / rings, ride type 1: atv/utv atv / atc, ride type 2: motorcycle adventure touring / dual-sport, average delivery time: 2-3 days, package weight: 0.13, package length: 4.30, package width: 4.25, package height: 0.40, manufacturer warranty: 90 days,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 8753904929428502,

Namura Technologies NA-40004R Is Similar To:

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5 offers $25.16–$35.84 USD
  • Offer #1: $33.31 price + $0.00 shipping estimate = $33.31* total. Two scraper rails and a single expansion ring. Part: Piston Rings.FREE SHIPPING
  • Offer #2: $35.84 price + $0.00 shipping estimate = $35.84* total. Standard Size Piston Ring Set 100mm. OEM Style Ring Set.FREE SHIPPING
  • Offer #3: $25.16 price + $11.99 shipping estimate = $37.15* total. 1993 Yamaha XT600. Namura Piston Ring Set 99.97mm.+$11.99 shipping
  • Offer #4: $38.65 price + $0.00 shipping estimate = $38.65* total. You are covered by the NAMURA Factory STYLE PISTON RINGS STD.FREE SHIPPING
  • Offer #5: $33.14 price + $0.00 shipping estimate = $33.14* total. Compression Rings are composed of either a highly ductile cast iron or stainless steel alloy; both materials possess excellent wear resistance and provide a gas-tight seal. Namura Technologies Piston Rings.FREE SHIPPING

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