907933241500

High-level feedback on the technology cultivated in the race. Racing spec oil for motorcycles.

The highest engine oil in the Yamarubu series.
YAMAROUB RS4GP provides high-level feedback on technology developed by Yamaha Motor's MotoGP racing team.
Excellent oil film retention and shear stability that can withstand harsh conditions under high loads and high rotations, and exhibits high lubrication performance stably for a long time.
The highest performance oil in the Yamarubu series, suitable for high performance engines.

Low friction characteristics and high oil film retention provide excellent throttle response and shift feeling for a long time.
Best oil for high performance models.

$190/1L