NAMURA ORNA-RA416993-GS Piston Rings Bike 47.94MM

( Brand: Namura ), ( Manufacturer Part Number: ORNA-RA416993-GS ), ( Part Type: Ring Piston )

Review NAMURA Honda Dirt Bike Piston Rings 47.94mm fits CR85 2003–2007

Introducing the Namura ORN-RA416993-GS piston rings for the 2003-2007 Honda CR85 bike. These piston rings are manufactured with precision and care to ensure optimal engine performance.

The outer diameter of these piston rings measures 47.94mm, making them a perfect fit for the Honda CR85's engine. Each ring is meticulously crafted from high-quality material, designed to withstand the rigors of regular use while providing excellent sealing properties.

These piston rings feature a compressive ring gap of 0.4mm, allowing them to expand slightly during the engine's compression stroke to create a tight seal between the piston and the cylinder wall. This seal is crucial for efficient combustion and optimal power output.

The top compression ring is designed to be slightly larger in diameter than the other rings to provide the necessary pressure to compress the fuel-air mixture during the combustion process. The rings also have a precise ring land width to ensure proper engagement with the piston and cylinder wall.

Each piston ring is carefully inspected for quality before being packaged for sale. The rings are sold as a complete set, including the compression ring, the oil control ring, and the skirt ring. Installing these rings is a straightforward process, and they are compatible with the stock piston in the Honda CR85 engine.

In summary, the Namura ORN-RA416993-GS piston rings for the 2003-2007 Honda CR85 bike are a high-quality replacement option for worn-out or damaged rings. They provide excellent sealing properties, efficient combustion, and optimal power output, ensuring your engine runs smoothly and reliably.

Buying Namura ORN-RA416993-GS piston rings for a 2003-2007 Honda CR85 bike comes with several pros and cons that you might want to consider before making a purchase.

1. OEM Quality: Namura is a well-known aftermarket manufacturer of motorcycle parts, including piston rings. These rings are designed to meet or exceed the original equipment (OEM) specifications of Honda.

2. Affordability: Aftermarket piston rings like Namura's can be more affordable than OEM options, making them an attractive choice for budget-conscious riders.

3. Availability: Aftermarket parts like these rings are often more widely available than OEM options, making it easier to find and purchase them.

4. Performance: Namura piston rings are designed to provide excellent sealing and durability, helping to improve engine performance and reduce the risk of oil leaks.

1. Potential Fitment Issues: While aftermarket piston rings are generally designed to fit well, there is always a risk of fitment issues. It's essential to ensure that the rings are the correct size and design for your specific bike model and engine.

2. Quality Concerns: While Namura is a reputable aftermarket manufacturer, there is always a risk that you may receive a defective or lower-quality product. It's essential to purchase from a trusted supplier to minimize this risk.

3. Installation Complexity: Installing piston rings can be a complex and time-consuming process, requiring specialized tools and knowledge. It's essential to ensure that you have the necessary skills and resources to install the rings correctly.

In conclusion, buying Namura ORN-RA416993-GS piston rings for a 2003-2007 Honda CR85 bike can offer several advantages, including affordability, availability, and OEM-quality performance. However, there are also potential risks, such as fitment issues and quality concerns. To minimize these risks, it's essential to purchase from a trusted supplier and ensure that the rings are the correct size and design for your specific bike model and engine.

If you're considering purchasing Namura ORN-RA416993-GS piston rings for your 2003-2007 Honda CR85 bike, we recommend purchasing them from a trusted supplier with a good reputation for selling authentic and high-quality aftermarket parts. Additionally, make sure to double-check that the rings are the correct size and design for your specific bike model and engine before making a purchase. Finally, consider having the rings installed by a professional mechanic to ensure that they are installed correctly and to minimize the risk of any potential issues.

Details:

This Namura ring set does NOT fit OEM pistons. Piston Size: 47.94 - 48.00mm. Parts without fitment are to be assumed universal and may require vehicle modification. This is helpful if you are buying multiple items.

Brand: Namura, model Number: ORNA-RA416993-GS. I need to exchange an item. Compatibility: Honda CR80R 1986 - 2002 , CR80RB Expert 1996 CR85R 2003 2007 , CR85RB Yamaha YZ80 1993 2001 , YZ85 2002 2014. 2003 - 2007 Honda CR85 Dirt Bike Namura Piston Rings 47.94mm: Ring Set Contains: ring to match a single piston.

part #: ornara416993 prices

• $7.39-$9.95

specifications pistondon:

• for models: Cr85
• for makes: Honda
• for years: 2003-2007
• brand: Namura
• mpn: Orna-ra416993-gs
• part type: Ring Piston

general pistondon:

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

offer pistondon:

• started: January 27, 2026
• availability: In Stock
• sold: 0
• quantity: 2
• options: Ship-to-home

shipping pistondon:

• cost: $0.00
• class: Standard
• type: Fixed
• service: Standard
• transit: 2-6 Days

payments pistondon:

• other
• wallet: Paypal
• credit card: Mastercard

seller pistondon:

• rating: 99.8%
• # reviews: 76161
• city: Indiana, US

returns pistondon:

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

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