Produced with a tolerance of 1/100th of a millimeter and the best material to withstand the high temperature of the motorcycle cylinder head. This product, by accurately sealing the valve stem, prevents oil from penetrating the combustion chamber and prevents oil burning, soot accumulation on the valves and loss of engine power in the long term.

Technical note:
If the valve stem lip or edge is not protected during installation, the inner edge of the seal will be damaged at the moment of installation, resulting in oil burning after the engine is shut down; even with a new and high-quality seal. For this reason, Madsuran has provided specialized tools for installing valve stem seal rings to increase the accuracy and ease of installation for craftsmen.

Oil leak detection:
Symptoms:
Blue smoke during cold start or after releasing the gas
Reduction in engine oil level without apparent leakage
Oily soot on spark plugs and loss of combustion efficiency

Click here to watch the installation guide.