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Vespa W1 Racing clutch next to a Vespa Cosa clutch.RetroRetro Tech

Vespa Largeframe Clutches: W1R Proto | TECH

White One Racing’s Proto clutch (right) compared to a banded Cosa 2 clutch (left) Does W1R’s lightweight largeframe clutch offer any advantages? I can remember back to a time when the best option for a tuned PX was stronger springs for the original 7-spring clutch; fitted with a reinforcement band…
iggy-grainger
24 June 2024