NAMURA ORNA-RA418331-GS Piston Rings Bike 53.96MM

( Brand: Namura ), ( Manufacturer Part Number: ORNA-RA418331-GS ), ( Part Type: Ring Piston )

Review NAMURA Yamaha Dirt Bike Piston Rings 53.96mm fits YZ125 2001

Introducing the Namura OR-A418331-GS piston rings for the 2001 Yamaha YZ125 bike engine. These piston rings are designed with precision and quality to ensure optimal engine performance and longevity.

The inner diameter of these piston rings measures 53.96mm, making them a perfect fit for the Yamaha YZ125 bike engine. They are manufactured using high-quality materials that are heat-resistant and resilient against the extreme pressures and temperatures inside the engine cylinder.

The top piston ring is a compression ring, which seals the combustion gases inside the engine cylinder during the power stroke. It features a fine-tooth design that ensures a positive seal against the cylinder wall, preventing the loss of compression and improving engine efficiency.

The second piston ring from the top is the oil control ring. This ring is designed to control the oil flow between the piston and the engine cylinder wall. Its unique design ensures even oil distribution, preventing excessive oil consumption and reducing engine wear.

The lower piston ring is the oil scraper ring, which scrapes the excess oil from the piston and sends it back to the crankcase for re-circulation. This ring is crucial for maintaining the correct oil level in the engine and preventing dry-running of the piston.

The piston rings are manufactured to stringent tolerances, ensuring a perfect fit and sealing performance. They are also coated with a high-performance, low-friction material that reduces piston-to-cylinder friction and improves engine power and efficiency.

These Namura OR-A418331-GS piston rings are an excellent replacement option for worn-out or damaged rings in your Yamaha YZ125 bike engine. They offer superior sealing performance, improved engine efficiency, and extended engine life, making them a wise investment for any serious motorcycle enthusiast.

Buying Namura ORNA-RA418331-GS piston rings for a 2001 Yamaha YZ125 bike involves considering both advantages and disadvantages. Here's a brief assessment of each:

1. OEM Quality: These piston rings are manufactured by Namura, a well-known and reputed OEM (Original Equipment Manufacturer) in the automotive industry. This ensures that the rings are of high quality and fit perfectly with your Yamaha YZ125's pistons.

2. Durability: Namura piston rings are known for their durability and longevity. They provide excellent sealing and prevent oil leakage, ensuring optimal engine performance.

3. Precision: The piston rings are manufactured with high precision, ensuring a proper fit and even compression. This results in better engine efficiency and reduced wear and tear.

4. Availability: Namura piston rings are widely available and can be easily purchased online or from local dealerships. This ensures that you can replace the worn-out rings without any delay.

1. Cost: Namura piston rings may be more expensive than aftermarket or used piston rings. However, the long-term benefits of using high-quality OEM rings may outweigh the initial cost.

2. Installation: Installing piston rings can be a complex process and requires specialized tools and expertise. It's recommended to have the rings installed by a professional mechanic to ensure proper installation and to avoid damaging the engine.

In conclusion, buying Namura ORNA-RA418331-GS piston rings for a 2001 Yamaha YZ125 bike comes with both advantages and disadvantages. The advantages include OEM quality, durability, precision, and availability. The disadvantages include the cost and the complexity of installation.

If you're looking for high-quality piston rings that provide optimal engine performance and longevity, then Namura ORNA-RA418331-GS piston rings are an excellent choice. The initial cost may be higher than aftermarket or used rings, but the long-term benefits and peace of mind that comes with using OEM parts are worth the investment. It's recommended to have the rings installed by a professional mechanic to ensure proper installation and to avoid any potential issues.

Details:

2001 Yamaha YZ125 Dirt Bike Namura Piston Rings 53.96mm: Ring Set Contains: ring to match a single piston. Compatibility: Husqvarna CR 125 1998 - 2010, 2012 2013 , WR 2007, 2009 Honda CR125R 2004 2007 , Kawasaki KX125 2005 , Suzuki RM125 1989 Yamaha YZ125 2014.: Brand: Namura, model Number: ORNA-RA418331-GS. Parts without fitment are to be assumed universal and may require vehicle modification.

I need to exchange an item. This Namura ring set does NOT fit OEM pistons. This is helpful if you are buying multiple items.

part #: ornara418331 price

• $14.24

specifications pistondon:

• for models: Yz125
• for makes: Yamaha
• for years: 2001
• brand: Namura
• mpn: Orna-ra418331-gs
• part type: Ring Piston

returns pistondon:

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

offer pistondon:

• availability: In Stock
• started: April 18, 2026
• sold: 0
• options: Ship-to-home
• quantity: 9

payments pistondon:

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

shipping pistondon:

• cost: $0.00
• type: Fixed
• class: Standard
• transit: 4-7 Days
• service: Standard

seller pistondon:

• # reviews: 83337
• rating: 99.9%
• city: San Marcos, CA

general pistondon:

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

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