Transmission

Due to requests, I now stock Dr Pulley slider kits. These differ from rollers, as they don't roll in the variator, they slide. These sliding roller...

NCY Torque Spring Torque springs do a couple of things. First they supply the pressure to engage the belt. They also determine the rate at which th...

Dr. Pulley sliders are the most advanced tuning weight you can use in your variator! These differ from rollers, as they don't roll in the variator,...

OEM Fan for Variator Primary Fixed Sheave  

Shopping for someone else but not sure what to give them? Give them the gift of choice with a Zumasrus Gift Card. Gift cards are delivered by email...

Dr. Pulley  Performance Variator Yamaha Zuma 125 Dr. Pulley makes some of the best performing variators, clutches, and roller weights in the worl...

125 Clutch Springs "One of the fundamental upgrades you can make to your scooter is swapping out the clutch springs for ones that will give you mor...

Currently Out Of Stock  POLINI VARIATOR YAMAHA Zuma 125cc  The Variator is a small, but very important tuning part in the scooter - the heart of ea...

16x13 Rollers, these are for the zuma 50 with a stock or NCY variator.  Choose desired weight. 

16x13 Rollers, these are for the zuma 50 with a malossi, polini, or athena variator.  Choose desired weight.