NAMURA ORNA-RA421393-GS Piston Rings Bike 66.34MM

( Brand: Namura ), ( Manufacturer Part Number: ORNA-RA421393-GS ), ( Part Type: Ring Piston )

Review NAMURA Ktm Dirt Bike Piston Rings 66.34mm fits SX 250 2003–2004

Introducing the Namura ORNA-RA421393-GS piston rings for the KTM 250 SX bike model from the years 2003 and 2004. These piston rings are designed with precision and quality to ensure optimal engine performance for your motorbike.

The Namura piston rings are manufactured using advanced materials and techniques to provide superior durability and resistance to wear and tear. The outer ring diameter measures 66.34mm, making them a perfect fit for the KTM 250 SX engine.

These piston rings feature a multi-segment design, which allows for better sealing and improved combustion efficiency. The rings are also coated with a special anti-friction material, reducing engine noise and minimizing wear on the piston and cylinder.

The inner ring of the Namura piston rings is made of a low-tension material, ensuring a snug fit within the piston grooves. The compression ring is designed to maximize compression and power output, while the oil control ring effectively prevents oil from entering the combustion chamber.

Replacing your old piston rings with these high-quality Namura ORNA-RA421393-GS rings can result in improved engine performance, increased power output, and better fuel efficiency. Installing these rings is a straightforward process, and they are compatible with the stock piston and gudgeon pin of the KTM 250 SX bike.

Upgrading your engine with these Namura piston rings is an investment in the longevity and performance of your motorbike. They are designed to provide consistent and reliable performance, ensuring that your KTM 250 SX bike continues to run smoothly and efficiently.

In conclusion, the Namura ORNA-RA421393-GS piston rings for the KTM 250 SX bike offer superior quality, durability, and performance benefits. With their precise fit, advanced design features, and effective sealing capabilities, these piston rings are an excellent choice for riders looking to maximize the potential of their motorbike's engine.

1. High-Quality Material: Namura piston rings are made of high-quality materials that ensure durability and improved engine performance. The rings are designed to withstand the rigors of high-performance motorcycles like the KTM 250 SX.

2. Precise Fit: These piston rings are specifically designed for the KTM 250 SX model, ensuring a precise fit that minimizes the risk of engine damage or wear.

3. Improved Engine Efficiency: New piston rings can help improve engine efficiency by reducing friction and sealing combustion gases more effectively.

4. OEM Replacement: These piston rings are original equipment manufacturer (OEM) replacements, which means they are designed to function optimally in the bike's engine and provide excellent performance.

1. Cost: Namura piston rings can be more expensive than aftermarket alternatives, which may be a deciding factor for some buyers.

2. Availability: Depending on the location and availability, it may take some time to source and receive these piston rings.

In conclusion, while Namura ORN-RA421393-GS piston rings for a 2003-2004 KTM 250 SX bike come with a higher price tag, their advantages, such as high-quality materials, precise fit, improved engine efficiency, and OEM replacement status, make them a worthwhile investment for those seeking optimal engine performance and longevity.

If you are looking for piston rings for your 2003-2004 KTM 250 SX bike and prioritize high-quality, precise fit, and optimal engine performance, then Namura ORN-RA421393-GS piston rings are an excellent choice. However, if you are budget-conscious, you may want to consider aftermarket alternatives. Ultimately, the decision depends on your budget, engine performance goals, and the urgency of your replacement needs.

Details:

2003 2004 KTM 250 SX Dirt Bike Namura Piston Rings 66.34mm: Ring Set Contains: ring to match a single piston. I need to exchange an item.: Brand: Namura, model Number: ORNA-RA421393-GS. Parts without fitment are to be assumed universal and may require vehicle modification.

Compatibility: Husqvarna TC 250 2014, TE KTM EXC 2005 - 2000 , MXC 2000 2003 , SX 2008 , SXS 2007 , XC 2006 XC-W 2008. This is helpful if you are buying multiple items.

part #: ornara421393 price

• $25.17

specifications pistondon:

• for models: Sx, 250
• for makes: Ktm
• for years: 2003-2004
• brand: Namura
• mpn: Orna-ra421393-gs
• part type: Ring Piston

returns pistondon:

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

seller pistondon:

• city: Boise, ID
• # reviews: 84346
• rating: 99.9%

general pistondon:

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

shipping pistondon:

• class: Standard
• cost: $0.00
• type: Fixed
• transit: 5-8 Days
• service: Standard

offer pistondon:

• quantity: 4
• sold: 0
• availability: In Stock
• started: May 1, 2026
• options: Ship-to-home

payments pistondon:

• wallet: Apple-pay
• other
• credit card: Visa

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