Aftermarket variator kit for GY6-series 49cc–100cc scooters and mopeds, designed to replace worn drive components and sharpen low-speed response. Riders seeking a straightforward swap that can slightly improve starting feel will appreciate the practical upgrade, the M2S Complete Variator Kit. Will it match your scooter's fitment and service needs?
⚡ At a Glance
- • Drive Performance: Slightly improved starting and low-speed response thanks to lighter rollers
- • Best for: Owners of GY6 49cc–100cc scooters needing a variator or clutch refresh
- • Not ideal for: Machines outside the listed GY6 engine codes or non-compatible variator designs
Compatible with GY6-series 4-stroke engines and a range of Chinese scooter brands. 16x13mm roller weights at 5.5g aim to slightly improve starting performance.
Easier starts and low-speed response – thanks to 5.5g roller weights
Roller weights measured at 16x13mm and 5.5g alter variator engagement characteristics, lowering the RPM at which the drive begins to climb through the belt ratio. That change helps the transmission engage earlier under light throttle.
Slightly crisper take-off from standstill and improved roll-away control for urban riding and short trips.
Broad engine and model compatibility – with GY6 139QMB/139QMA/147QMD support
Fitment information lists compatibility with GY6 49cc, 50cc, 80cc and 100cc 4-stroke engines and named scooter models such as Lexmoto Echo LJ50QT-3L and FM 50 WY50QT-111.
Works as a practical replacement across many Chinese-made scooters and ATVs, reducing time spent searching for parts.
Complete swap-ready kit – with front clutch drive pulley included
Kit description includes the variator assembly plus a front clutch drive pulley and the specified roller weights, supplied to match GY6-style variator layouts.
Simplifies routine maintenance or a clutch and variator refresh, provided fitment is confirmed against the reference pictures.
✨ The 4 Key Reasons for M2S Complete Variator Kit
- Wide engine fitment – Fits GY6 49cc–100cc engines, covering common scooter models
- 5.5g roller weights – Slightly improves low-speed starts and initial acceleration response
- 16x13mm roller size – Matches common variator dimensions for straightforward replacement without modifications
- Complete kit with pulley – Replaces worn parts to restore drive reliability quickly
📋 Technical Details at a Glance
- Category: Variator kit
- Application: GY6-series 4-stroke scooters and mopeds
- Compatible Engines: 139QMB, 139QMA, 147QMD
- Displacement Range: 49cc, 50cc, 80cc, 100cc
- Roller Weight: 5.5g
❓ Frequently Asked Questions
Q: Will this variator kit fit my scooter?
A: Compatibility covers GY6 49cc–100cc 4-stroke engines and named models in the fitment list, but confirm by comparing the supplied pictures with the existing variator and engine codes.
Q: Will the roller weights improve starting performance?
A: Roller weights are 16x13mm at 5.5g and are stated to slightly improve starting performance by altering variator engagement characteristics.
Q: Which makes and models are supported?
A: Fitment notes list examples including Lexmoto Echo LJ50QT-3L, FM 50 WY50QT-111 and many Chinese-made brands such as JONWAY, TAOTAO and BENZHOU, among others.
🏆 Our Verdict
Suitable for owners of GY6-series scooters who need a direct replacement for worn variator components and want a small improvement in low-speed response. The inclusion of 5.5g roller weights and a front clutch drive pulley makes the kit a practical, swap-ready option for routine maintenance. Long-term value comes from restored drive behaviour and broad fitment across common scooter models.
