NAMURA ORNA-RA421613-GS Piston Rings Bike 66.34MM

( Brand: Namura ), ( Manufacturer Part Number: ORNA-RA421613-GS ), ( Part Type: Ring Piston )

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

Introducing the Namura ORNA-RA421613-GS piston rings for the 2003-2004 KTM 250 SX bike. These piston rings are meticulously designed to provide optimal engine performance and durability for your motorbike.

The inner piston ring diameter measures 66.34mm, ensuring a perfect fit for your KTM 250 SX engine. These rings are manufactured from high-quality materials, specifically engineered for two-stroke engines, to guarantee a snug fit and minimal compression loss.

The outer piston ring features a unique, multi-lobed design that enhances the sealing ability against the cylinder wall. This design helps to prevent the transfer of engine oil into the combustion chamber, thus reducing power loss and improving overall engine efficiency.

The intermediate piston ring is designed with a split-type configuration, allowing it to expand and contract freely with the piston during engine operation. This flexibility reduces the risk of ring damage and ensures a consistent seal between the piston and cylinder wall.

The top compression piston ring is designed with a thin, low-tension ring section to minimize friction and heat generation. This feature helps to reduce engine temperature and improve the overall lifespan of the piston rings.

All Namura piston rings undergo a rigorous quality control process to ensure they meet the highest standards of precision and durability. These rings are designed to provide reliable performance in even the most demanding riding conditions, ensuring your KTM 250 SX engine runs smoothly and efficiently.

Installing these piston rings is a straightforward process, and they come with detailed installation instructions to ensure a hassle-free experience. With the Namura ORNA-RA421613-GS piston rings, you can enjoy improved engine performance and extended engine life for your KTM 250 SX bike.

Pros and Cons of Buying Namura ORA-RA421613-GS 2003-2004 KTM 250 SX Bike Piston Rings (66.34mm)

a. High-Quality Material: Namura piston rings are made of high-quality materials, ensuring durability and reliability.

b. Precision Fit: These rings are designed specifically for the 2003-2004 KTM 250 SX bikes, ensuring a precise fit that minimizes engine wear.

c. Improved Performance: New piston rings can lead to improved engine performance, including increased power and better fuel efficiency.

d. Cost-Effective: Replacing worn piston rings with new ones can save you money in the long run by preventing more serious engine damage.

a. Installation Complexity: Installing piston rings can be a complex process that requires specialized tools and knowledge.

b. Cost: Replacing piston rings can be a costly repair, especially when considering the labor and parts costs.

c. Potential for Damage: Improper installation or use of incorrect rings can result in engine damage.

Buying Namura ORA-RA421613-GS 2003-2004 KTM 250 SX Bike Piston Rings (66.34mm) offers several benefits, including improved engine performance, durability, and reliability. However, the installation process can be complex and costly, making it an investment worth considering for those looking to keep their bikes running at their best.

If you own a 2003-2004 KTM 250 SX bike and notice signs of worn piston rings, such as decreased power or poor fuel efficiency, it is recommended to replace them with new ones. To ensure a successful installation, consider using the services of a professional mechanic or following a detailed installation guide.

Details:

This is helpful if you are buying multiple items. I need to exchange an item. 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.

2003 2004 KTM 250 SX Dirt Bike Namura Piston Rings 66.34mm: Ring Set Contains: ring to match a single piston.: Brand: Namura, model Number: ORNA-RA421613-GS.

part #: ornara421613 price

• $25.17

specifications pistondon:

• for models: Sx, 250
• for makes: Ktm
• for years: 2003-2004
• brand: Namura
• mpn: Orna-ra421613-gs
• part type: Ring Piston

offer pistondon:

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

seller pistondon:

• # reviews: 84356
• rating: 99.9%
• city: Boise, ID

general pistondon:

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

payments pistondon:

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

shipping pistondon:

• transit: 3-5 Days
• type: Fixed
• service: Standard
• cost: $0.00
• class: Standard

returns pistondon:

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

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