Roller Weight Tuning Kit
This is probably the best way to go about tuning your CVT transmission!

Included in this tuning kit are 12 sets of 3 rollers, for a total of 36 roller weights. These sets range from 7g to 18g. Combining 2 sets of rollers allows you to tune with a large variance of weights sets!

For example:
3 x 10g & 3 x 11g rollers (alternating weights in variator) gives you 10.5g roller set.

DANGER: weights must be put in a 120 deg pattern in other words alternate! If not, SEVERE ENGINE DAMAGE WILL RESULT!!! (in other words, alternate the rollers)

TIPS: Lighter roller weights will increase RPM for any given road speed.
Heavier weights will lower RPM for any given road speed.

All of this, of course, must be tailored to each person's engine set-up & personal driving style!!

These rollers are not intended for long term use. They are a short term tuning tool.

Happy scootering!!!

( 20 x 12mm is the size of the stock & NCY rollers for the 125cc Zuma-if you have a different aftermarket variator they are probably a different size!)

(the stock weight from Yamaha is 12 grams)