All model years of 120HP version, all 2107 models and all early production 2018 Can AM X3 models came with a primary clutch outer half design that was a thinner, all-aluminum casting and suffers from accelerated tower wear at the slider shoe contact surface, especially in higher HP units (over 120HP). This older design was also noisy. If constant maintenance is not performed to monitor the wear and replace components as necessary then you will end up with a damaged outer half and governor cup which will cost approx $700 to replace. To prevent this accelerated wear and damage we suggest you send your clutches in to us to have the outer half replaced with the new design that is much more robust, has steel wear plates, will not wear like the older models and is much quieter..