Currently, we do not have an engine oil additive developed specifically for motorcycles.
In particular, we request that vehicles with wet clutches avoid adding engine oil additives to the inside of the engine, as this may cause clutch slippage.
On the other hand, the following products can be used for motorcycles with dry clutches and scooters with CVT specifications.
Bell Hammer GOLD undiluted solution (general-purpose engine oil additive for dry clutch vehicles)
・Bell Scooter (additive for CVT scooters only)
Translated with DeepL.com (free version)