If a 2-shoe clutch is installed in your Minarelli engine, you can convert to this 107mm version, but still need to match 107mm clutch bell. The benefit is that there are much more sport and racing clutches in the 107mm version and you have a wider choice.
This product would be ideal for those looking to upgrade the clutch assembly on their Yamaha Aerox R50 or YQ50 motorcycles post 99.