1/2 Sets Motorcycle Engine Parts Piston Rings Kit STD Size 49mm ~ 50mm Compatible With YAMAHA XV250 1988-2018 XC125 Cygnus XV 250 XC 125(2 Sets 49.5mm)

Hi, dear friend,Please make sure your model will the model and compare with pictures provided here before purchasing! Thanks! If you have any questions, please feel to contact us.Feature- : - Material Type:Nodular Cast Iron- Condition: - Size: 49mm 49.25 49.50 49.75 50mm- Origin: China- OEM Code: 2UJ-11638-00-00 50M-11610-40-00- The package includes: as shown in the pictureOriginal accessories can be directly replacedNote: Please confirm the motorcycle that is Compatible With you before purchasing. If you have any questions about the product, please feel to contact us at any time.Compatible With YAMAHAXV250 1988-2018XC125 Cygnus 1990-1993Model Name : 2UJ-11638-00-00 50M-11610-40-00 XV250 XC125 CygnusOrigin : Mainland ChinaMaterial : Nodular Cast IronDiamter : 49mm 49.25 49.50 49.75 50mmBore Size : STD +25 +50 +75 +100No. of Cylinders: : 2 CylinderDear friends, welcome to our shop! We are a professional auto parts store. I hope our products can help you, and wish you a happy shopping!

• The combination of gas ring and oil ring with high precision machining can make the sealing pressure evenly distributed, which can control the air leakage of the cylinder within 0.5%, ensure the full combustion and improve the engine power.
• The oil scraper angle of oil ring is optimized by hydrodynamics, and the oil scraper efficiency is improved by 30%, which can effectively reduce the oil channeling, reduce the oil consumption and avoid the phenomenon of oil burning.
• It can maintain stable elasticity and sealability in the high temperature environment of 250℃, adapt to high temperature working conditions such as turbocharged engines, and will not lead to seal failure due to thermal deformation.
• Compared with the traditional piston ring, it reduces the friction loss by 20% and improves the fuel economy of the engine.
• The surface of the new ring is specially honed, and the running-in period is shortened to 500 kilometers, avoiding the problems of power loss and excessive oil consumption during the running-in period.