Top 20 Best Selling Transmissions Drive Train (2019)




Polini variator for the Honda Ruckus also know as the Zoomer outside the USA 50cc 4-Stroke LC Includes one set of 5.6 gram weights and one set of 6.8 gram weights The variator is a small, but very important tuning part. The heart of each automatic scooter ... more info

Retrofit variator springs are an important and intelligent purchase when tuning your automatic scooter. Why? Horsepower hefty motors tend to outrun their belts. In order to keep the herd from stampeding, a reinforced vario spring exerts pressure on the re ... more info


The belt and the roller weights are the first things that should be changed on any automatic scooter ... more info


Performance 9gm Variator Weights. Will work on many 49 50cc Scooters. 16x13mm. ... more info




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 3g to 14g. Combining 2 sets of rollers allows you to tune with a large va ... more info



Dr. Pulley 26x13 Sliding Roller Weights.. Please select weight from the option list.Traditionally, gear ratio is changed by the up-and-down rolling movement of the roller weights in the ramp of the Moveable Drive Pulley (MDF). Now the innovative Dr. Pulle ... more info

This Super Trans Kit is one of the best dollar-for-dollar bolt-ons to improve your bike! Quicker accelleration, higher top speeds, and makes your CVT the smoothest operating trans around! From rapid down shifting to slow cruising, this thing is smooooth. ... more info



4-SPEED SHIFT DRUM: Replaces the OEM KLX/DRZ shiftdrum and allows use of the 4th gear that is blocked out on the stock bike. OEM quality part. Installs the same as stock 3-speed shift drum. Requires complete engine dis-assembly to install. ... more info


The variator is a small, but very important tuning part in the automatic scooter corner. The heart of each automatic scooter motor. My recommendation is that a variator installation is a must for all 2/4 stroke scooter owners who want the very best for an ... more info


This is the ORIGINAL 6-Speed design that revolutionized the American V-Twin industry. Yet, it's still the best overdrive 6-Speed built to this day. Our OD6 is built to comfortably handle the power from today's big-inch motors. This transmission is rated f ... more info

This all inclusive kit is designed to freshen up those high mileage bikes. Developed to work specifically with our OD6, DD6, DD5 and OEM5 left side drive transmissions. Includes bearings, snap rings, gaskets, seals and retaining nuts. ... more info




Dr. Pulley 25x17 Sliding Roller Weights.. Please select weight from the option list.Traditionally, gear ratio is changed by the up-and-down rolling movement of the roller weights in the ramp of the Moveable Drive Pulley (MDF). Now the innovative Dr. Pulle ... more info

A torque spring keeps tension on the belt and counters the force of the roller weights. Along with the roller weights, it controls the shift points ... more info


Andrews 4-Speed Transmission Close Ratio 3rd Set (1.35 Ratio / 18 and 23 Teeth) for transmissions built after mid 1976 with caged needle bearingsBike Fitment1976-1984 Harley Davidson FLH Electra Glide1981 Harley Davidson FLHC Electra Glide Classic Late 19 ... more info


Doppler rollers are one of the highest quality roller weights made for scooter tuners in the world today. For uses in replacement of the stock rollers or for highly tuned scooters these are a great fit. ... more info

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