BDX Gy6 Stage 2 Performance Roller Weights Transmission Upgrade
$71.35
This is Stage 1, Stage 2 includes a 1500rpm spring and then our final upgrade is bit of a jump but you get our Powerpak which includes every upgrade possible for the transmission and overall performance. Not sure what fits your machine? Call and speak to a live technician for expert advice.
Roller Weights Transmission Upgrade from DAX Performance. This performance upgrade helps you get more out of your machine, backed by phone technical support.
ABOUT BDX PERFORMANCE
BDXP is the leading USA technical expert in the Chinese vehicle off road market. Our engineers and technicians have helped thousands of people in the past twenty years keep their vehicles running. We have a full machine shop where we manufacture performance parts and engines to get maximum performance out of your vehicle.
DESCRIPTION
We sell different stage transmission upgrade kits! This is Stage 1, Stage 2 includes a 1500rpm spring and then our final upgrade is bit of a jump but you get our Powerpak which includes every upgrade possible for the transmission and overall performance.
BDX Part Info:
The contra spring provides the downshifting forces in a CVT transmission by working against the roller weights. CVT tuning is all about balancing the roller weights with a proper contra spring. The 1500RPM spring increases the tension on the belt and rollers. This delays the transmission from upshifting too soon and also reduces belt slippage. The 1500RPM spring itself increases and smooths out acceleration, low-end grunt, and maximizes backshift. “Backshift” is the delay time it takes the transmission to downshift when engine RPMs drop. This is best visualized when thinking about coming in and out of a tight turn. Slowing for the turn the RPMs drop, you then clear the turn and apply full throttle. This is where backshift plays in — you want the transmission to downshift to the proper lower gearing ratio as soon as possible through the turn so the CVT won’t be stuck in an upshifted state when throttle is reapplied coming out of the turn.
Roller/Slider Weights:
Changing out the rollers is undoubtedly the best bang-for-the-buck upgrade there is for your buggy. Roller weights provide the upshifting forces for the CVT transmission by flinging outwards within the variator in varying stages of engine speed (RPM). Roller weight tuning is a matter of preference and riding terrain. A lighter weight will fling outward slower than a heavier weight, slowing the upshift process, and keeping the transmission in low gear longer. The stock 14.5g weights are rather heavy and upshift very fast in the RPM cycle, resulting in hindered acceleration and limited low-end grunt. These are our notes regarding tuning and roller weights.
GUARANTEED FIT FOR THE FOLLOWING VEHICLES
Fits any gy6 150cc to 184cc engine
- 150cc
- 170cc (YES, this fits the K-block 170cc engines)
- 175cc
- 184cc
Does not fit K-block 177cc engine
SPECIFICATIONS
- 1500rpm Spring Yellow
- Stage 2: 9g 10g, 12g, 14g Roller Weights
About the GY6 Roller Weights Transmission Upgrade
On a GY6 engine, the roller weights inside the variator decide when the CVT shifts up and how hard the engine pulls from a stop. This Stage 2 roller weights transmission upgrade changes that shift point so the engine stays in a stronger part of its power band for longer, giving quicker acceleration and a livelier feel on go-karts, scooters and buggies.
How Roller Weights Work
As engine speed rises, the rollers move outward inside the variator and squeeze the drive belt, changing the gear ratio. Lighter rollers let the engine rev higher before shifting, which helps acceleration and hill climbing. Heavier rollers shift earlier, which can help top speed and fuel economy. A tuned set like this one is designed to balance those trade-offs for performance use.
Installation Tips
- Remove the CVT cover and the variator nut using a holding tool.
- Clean the variator ramps and check them for grooves or flat spots.
- Install the new rollers in the correct direction and reassemble with a clean belt face.
- Test ride gently at first and listen for any slipping or unusual noise.
Care and Maintenance
Rollers wear flat over time, which makes acceleration feel weak. Inspect them whenever you change the belt. Keep the CVT area clean and dry, and replace a glazed or cracked belt at the same time as this roller weights transmission upgrade for the best result.
Frequently Asked Questions
Will this work on my stock GY6? Yes, it is intended for GY6 engines and works best alongside the other Stage 2 parts. Call us to talk through your setup.
Do I need special tools? A variator holding tool and basic hand tools make the job much easier.
Roller Weights Transmission Upgrade: Fitment and Support
Have a question about the Roller Weights Transmission Upgrade before you order? Call and speak to a live technician, with no automated phone system. You can also browse more Engine Parts for your machine. Learn more about GY6 engine. Order the Roller Weights Transmission Upgrade online today, or call us first to confirm it is the right fit for your machine. Our technicians can walk you through installing the Roller Weights Transmission Upgrade over the phone. Looking for parts to go with your Roller Weights Transmission Upgrade? Browse the related products below.
| Weight | 0.363 lbs |
|---|
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