$249 Value on Sale Now for $99
ONLY When You Purchase an Engine

If you purchase one of our engines we will install this transmission in your engine if you also purchase this product.

Get more torque and power to your wheels with the BDX High Performance Racing Transmission

The difference between a sluggish and slow buggy, ATV, scooter or UTV can be found in the transmission. We have seen some great buggies, such as the Dongfang 170cc go kart. But it is slow and sluggish because of its stock transmission. This can easily be remedied with our GY6 High Performance Racing Transmission package which includes

1500 PRM Spring
9. 10, 12, 14 gram rollers,
115mm performance variator
High stall clutch
Gates Powerlink Belt (not shown in picture)

If you order this with an engine we install it free and you get a discounted price.

Four sets of Koso roller weights for you to optimize top end speed and low end torque of your vehicle (9g, 10g, 12g and 14 grams). If you purchase an engine one set is included inside of your engine.

This Koso high stall clutch unit engages at higher RPM with more force than the standard clutch. This helps during steep hill climbing, towing, or when forcing the front end up over large obstacles. This unit provides a better launch from a stand still as well.

High Stall Automatic Clutch Unit

The Koso 115mm Performance Variator Included

2 piece variator
12g roller weights
Improved acceleration and hill climbing
Improved usage of powerband
Keeps you within good power range at all speeds
Over-sized 115mm
Revised Roller Ramp Angles
Teflon Coated Ramps

The Koso 115mm and variators are designed with steeper roller ramp angles for an improved acceleration and hill climbing. The revised roller ramp angles delay the CVT up-shifting process until the engine's powerband is reached - starting at approximately 6500rpm.

This keeps you well within good power range even at low speeds, and optimizes acceleration RPM when flooring it.

115mm Performance Variator

1500 RPM Clutch Spring

Extended Low Gear
Reduces Belt Slippage
Doesn't reduce top speed
For GY6 engine

This stiffer transmission spring keeps your CVT transmission in lower gear longer, allowing higher RPMs at lower speeds. This extends the amount of throttle you can apply at low speeds, and ultimately allowing more low-gear power to the wheels before the transmission begins to shift to higher gearing ratios. This is important for buggies where low-end power is what we're after.

POWER SPRING, 1500RPM (YELLOW)

Gates Powerlink Belt

This is the best quality belt for the GY6 engine.

This $99 offer is available ONLY to people who purchase an engine. If you have not purchased an engine please see this same product here.

735-19.1 Go-Kart Torque Converter Drive Belts (2×) 30 Series

735-19.1 (2) DRIVE BELTS for go-karts, scooters and other applications

Fits many applications including: