Anytime you add a cylinder kit or exhaust you will have to dial in your clutch to keep your bike within its powerband.
This set has all you will need to adjust your clutch engagement on your Yamaha Zuma 105mm clutches.
These clutches are used on the early year Zuma's and can easily be identified because they use 2 clutch springs.
The larger 107mm clutches have 3 springs.
Set comes three different tensions
soft = black
medium = white
hard = blue