Monster Pack For GY6 Engines
Variator, Clutch, Roller Weights, Main Spring. 

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Monster Pack 2
50cc - 150cc
$125.00
This power pack is equipped with everything you need to tune your CVT (transmission) to optimize performance for your type of riding. You can mix and match the three different roller weights in the kit. 
 50cc Kit: 3x 4grm, 3x 6grm, & 3x 8grm weights.
150cc Kit: 3x 11grm, 3x 13grm & 3x 15grm weights.
Kit includes:

 Click the add to cart button, and you can select the 
50cc or 150cc options.