Glixal GY6 49cc–50cc Complete Variator Kit — 6.5g Rollers, 87.7mm OD for 139QMB/139QMA

Glixal’s complete GY6 variator kit is a drop-in aftermarket drive system rebuilt to fit 49cc–50cc 4-stroke GY6 engines, including the 139QMB and 139QMA families.

This kit supplies everything needed to refresh the primary transmission on many Chinese-made scooters, mopeds, ATVs and go-karts that use GY6-style clutches. Instead of buying individual parts, you get a matched variator, drive face, rollers, back plate with slides, fan, kickstarter ratchet gear and drive face gear — all manufactured as new aftermarket replacements to OEM dimensions.

How will this variator kit affect my scooter’s drive performance?

Installing a complete variator kit restores the variable pulley geometry and clutch engagement characteristics that wear over time. With properly sized 6.5 g roller weights and the included drive components, you’ll see more consistent CVT behaviour and predictable acceleration through the RPM range.

• Includes 16x13mm 6.5 g roller weights matched to the variator
• Variator outer diameter 87.7 mm for correct belt contact
• Drive face gear and ID/OD dimensions built to OEM specifications

Is this kit compatible with my engine or scooter model?

The Glixal kit is engineered for GY6-style 49cc and 50cc 4-stroke engines such as 139QMB, 139QMA and 147QMD variants. It fits many Chinese and Taiwanese scooter, ATV and go-kart brands that use those engines, but verify dimensions and fitment against your existing parts before ordering.

• Fits 139QMB/139QMA/147QMD family engines (49–50cc)
• Commonly compatible with Jonway, Taotao, Roketa, Sunl, JCL and similar makes
• Check boss bush size 20x38 mm and variator OD 87.7 mm for fit verification

What parts come in the package and are they ready to install?

The package includes a full set of variator system components so you won’t need to source extra parts. Components arrive new and are intended to meet OEM sizing, but standard installation procedures, belt inspection and torque specs should be followed by a mechanic or experienced DIYer.

• Variator, variator back plate with slides, plastic variator fan
• Drive face shaft, drive face gear, kick starter ratchet gear
• Set of roller weights (6.5 g each) and necessary small components

What measurements matter when confirming fitment?

Three core dimensions are the quickest way to confirm compatibility: the variator outer diameter, boss bush size and roller weight dimensions. Matching these to your current assembly reduces the chance of incompatibility.

• Variator outer diameter: 87.7 mm
• Boss bush size: 20 x 38 mm
• Roller weight size: 16 x 13 mm, weight 6.5 g

Who this is for: This Glixal variator kit is aimed at riders, mechanics and hobbyists who maintain or restore 49cc–50cc GY6-based scooters, mopeds, small ATVs and go-karts. It's useful when the CVT shows signs of wear—slippage, inconsistent acceleration or noisy operation—and for anyone replacing worn variator components with an all-in-one aftermarket solution. Always confirm the listed dimensions and engine model before purchase, and consult a qualified mechanic if you’re unsure about installation procedures.