NAMURA ORNA-RA421385-GS Piston Rings Bike 66.34MM

( Brand: Namura ), ( Manufacturer Part Number: ORNA-RA421385-GS ), ( Part Type: Ring Piston )

Review NAMURA Ktm Exc Dirt Bike Piston Rings 66.34mm fits 250 2000–2006

Introducing the Namura ORN-RA421385-GS piston rings for the KTM 250 EXC motorbikes manufactured between the years 2000 and 2006. These piston rings are designed to provide optimal performance and durability for your two-stroke engine.

The rings measure 66.34mm in diameter and are meticulously crafted using high-quality materials. Each ring is precision engineered to ensure a perfect fit, providing a snug seal within the engine cylinder. The rings are designed to minimize compression loss and prevent the transfer of engine oil into the combustion chamber, thereby improving engine efficiency and power output.

The outer piston ring is responsible for sealing the combustion gases within the engine cylinder, while the inner piston ring controls the flow of engine oil to the transfer ports. These rings are manufactured to strict tolerances to ensure a proper fit and function.

The rings are also designed to withstand the high temperatures and pressures generated within the engine cylinder. The material used in their construction provides excellent heat resistance and durability, ensuring that they last for a long time even under heavy use.

Installing these piston rings is a straightforward process, and they come with clear installation instructions to ensure that the job is done correctly. Each ring is supplied individually, allowing you to replace only the worn or damaged rings, rather than having to replace the entire set.

In summary, the Namura ORN-RA421385-GS piston rings for the KTM 250 EXC motorbikes are an essential upgrade for any rider looking to improve the performance and longevity of their engine. With their precise fit, excellent heat resistance, and durable construction, these rings offer excellent value for money and are a must-have for any serious off-road enthusiast.

Buying Namura ORN-RA421385-GS piston rings for a 2000-2006 KTM 250 EXC bike comes with both advantages and disadvantages. Here's a breakdown of each:

1. High-Quality Material: Namura piston rings are made from top-grade materials, ensuring durability and resistance to wear and tear.

2. Precise Fit: These piston rings are specifically designed for the KTM 250 EXC model, ensuring a perfect fit.

3. Improved Performance: The use of high-quality materials can lead to improved engine performance, resulting in better power output and increased fuel efficiency.

1. Cost: Namura piston rings may be more expensive than other aftermarket brands.

2. Availability: These piston rings may not be readily available at local motorcycle shops, requiring online purchases or special orders.

3. Installation Complexity: Installing piston rings can be a complex process, requiring specialized tools and technical knowledge.

The decision to buy Namura ORN-RA421385-GS piston rings for a 2000-2006 KTM 250 EXC bike ultimately depends on individual priorities. If you value high-quality materials and improved engine performance, these piston rings may be worth the investment, despite the higher cost and potential installation complexity. On the other hand, if you're looking for a more budget-friendly option, you may want to consider other aftermarket brands or used OEM piston rings.

If you're confident in your mechanical abilities and have the necessary tools, purchasing Namura ORN-RA421385-GS piston rings could be a worthwhile investment for the performance benefits they offer. Alternatively, if you prefer a more straightforward and budget-friendly solution, consider consulting with a local mechanic or motorcycle shop for alternative options.

Details:

I need to exchange an item. Compatibility: Husqvarna TC 250 2014, TE KTM EXC 2005 - 2000 , MXC 2000 2003 , SX 2008 , SXS 2007 , XC 2006 XC-W 2008. 2000 2006 KTM 250 EXC Dirt Bike Namura Piston Rings 66.34mm: Ring Set Contains: ring to match a single piston.: Brand: Namura, model Number: ORNA-RA421385-GS.

Parts without fitment are to be assumed universal and may require vehicle modification. This is helpful if you are buying multiple items.

part #: ornara421385 price

• $25.17

specifications pistondon:

• for models: 250
• for makes: Ktm
• for years: 2000-2006
• brand: Namura
• mpn: Orna-ra421385-gs
• part type: Ring Piston

shipping pistondon:

• transit: 4-6 Days
• type: Fixed
• class: Standard
• service: Standard
• cost: $0.00

seller pistondon:

• # reviews: 84348
• rating: 99.9%
• city: Boise, ID

payments pistondon:

• credit card: Diners-club
• other
• wallet: Paypal

returns pistondon:

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

offer pistondon:

• sold: 0
• started: May 2, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 4

general pistondon:

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

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