Motorcycle chains do need lube to prevent wear between the chain and the sprocket. At the track, a lot of guys use gear oil. Run it on the lower rung of the chain, then wipe off the excess.
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Il faut de l'audace, encore de l'audace, toujours de l'audace
1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1