fits model: Yz125. make: Yamaha. year: 2005–2014.

( Brand: Namura ), ( Manufacturer Part Number: ORNA-RA418445-GS ), ( Part Type: Ring Piston )
The Namura ORNA-RA418445-GS piston rings are designed specifically for use in the Yamaha YZ125 motorcycle engine models produced between 2005 and 2014. These piston rings are of the highest quality, ensuring optimal engine performance and longevity.
Each ring set is composed of five piston rings: two compression rings, one oil control ring, one skirt pin oil ring, and one top ring. The compression rings are designed to tightly seal the combustion chamber, allowing for efficient transfer of heat and compression of the fuel-air mixture during the combustion process. These rings are made of a durable, heat-resistant material, ensuring they can withstand the extreme conditions within the engine.
The oil control ring is responsible for preventing oil from passing through the piston rings and into the combustion chamber, minimizing oil consumption and reducing engine emissions. The oil ring is also made of a high-quality, wear-resistant material that ensures a long service life.
The skirt pin oil ring is another essential component of the piston ring set. It helps to minimize oil consumption by preventing oil from leaking past the piston rings towards the crankshaft. This ring is also made of a durable, wear-resistant material that is designed to last.
The top ring, also known as the gudgeon pin or piston pin ring, ensures that the piston remains centered within the cylinder during engine operation. This ring is also made of a high-quality material that can withstand the extreme heat and pressure within the engine.
The Namura ORNA-RA418445-GS piston rings are an excellent upgrade for Yamaha YZ125 motorcycle owners looking to improve engine performance and prolong the life of their pistons. These rings are precisely engineered to fit the cylinders of the YZ125 engine produced between 2005 and 2014 and are made of high-quality materials to ensure their longevity. With these piston rings, you can look forward to improved combustion efficiency, reduced oil consumption, and a more consistent engine performance.
Buying Namura ORNA-RA418445-GS piston rings for a Yamaha YZ125 bike with a 53mm bore and 96mm stroke (years 2005-2014) comes with both advantages and disadvantages. Analyzing the features and performance against the cost will help make an informed decision.
Advantages:1. Superior Quality: Namura is a renowned manufacturer known for producing high-quality piston rings. They use advanced materials, ensuring better performance and durability compared to OEM options.
2. Wear Resistance: The rings are designed to endure heavy usage, reducing the need for frequent replacements and enhancing the engine's lifespan.
3. Precision: Namura piston rings offer better sealing capabilities, ensuring optimal engine compression and fewer emissions.
4. Temperature Resistance: Namura piston rings can handle high engine temperatures, which is ideal for the Yamaha YZ125 engine.
Disadvantages:1. Cost: Namura piston rings may come with a higher price tag than OEM alternatives; however, the increased cost might be justified by their superior quality and improved performance.
2. Potential for Damage: The rings are relatively thicker and may require careful installation to avoid damaging the cylinder wall.
In conclusion, while the Namura ORNA-RA418445-GS piston rings for a Yamaha YZ125 might be pricier than OEM parts, they offer superior quality, durability, and performance. The potential for damage during installation is a downside, but with careful handling and proper installation, the benefits of using these piston rings can significantly improve your bike's engine performance in the long term.
Therefore, my recommendation would be to consider the Namura ORNA-RA418445-GS piston rings as an investment in the bike's engine performance and longevity. Ensure you follow the recommended installation procedures provided by the manufacturer to ensure a successful installation.
Brand: Namura, model Number: ORNA-RA418445-GS. 2005 - 2014 Yamaha YZ125 Dirt Bike Namura Piston Rings 53.96mm: Ring Set Contains: ring to match a single piston. This Namura ring set does NOT fit OEM pistons. Parts without fitment are to be assumed universal and may require vehicle modification.
This is helpful if you are buying multiple items. I need to exchange an item. Compatibility: Husqvarna CR 125 1998 - 2010, 2012 2013 , WR 2007, 2009 Honda CR125R 2004 2007 , Kawasaki KX125 2005 , Suzuki RM125 1989 Yamaha YZ125 2014.