CG125 sprocket buffer sleeve; original 1:1 moulding, precise match for outer diameter/inner diameter/thickness, directly replaces old parts without modification; high-elasticity buffer design effectively absorbs chain impact during riding, reduces sprocket and chain wear, and lowers transmission noise; made of high-quality natural rubber and nitrile rubber composite, highly elastic, wear-resistant and ageing-resistant, Shore hardness 65-70°; oil and temperature resistant (-30℃ to 80℃), suitable for complex environments such as rainy and muddy roads, resistant to cracking and deformation; precision mould vulcanised, smooth surface without burrs, fits tightly when installed, transmission stable without wobbling