GOOFIT Transmission Rollers are scooter transmission replacements sized to match GY6 50 and 139QMB 49cc–50cc variators, designed for reliable, corrosion-resistant service. Keeping a worn variator roller set replaced helps maintain smooth acceleration and consistent performance. Are the 16mm by 13mm rollers the correct match for your maintenance needs?
⚡ At a Glance
- • Rolling Performance: Outer diameter 16mm and height 13mm, manufactured to match GY6 50/139QMB variator geometry for consistent rotation
- • Best for: Owners of GY6 50 and 139QMB 49cc–50cc scooters needing direct replacement rollers during routine maintenance
- • Not ideal for: Scooters that require non-standard roller sizes or use a different variator system
Six replacement rollers sized 16mm outer diameter by 13mm height for GY6 50 and 139QMB 49cc–50cc scooters. Constructed with corrosion-resistant, rustproof materials and high toughness for extended service life.
Accurate fit - With 16mm x 13mm roller dimensions
Outer diameter 16mm and height 13mm are specified to match GY6 50 and 139QMB variator allowances, allowing the rollers to seat correctly in the variator track. Correct dimensions reduce irregular contact and uneven wear during rotation.
Direct replacement simplifies a service visit and restores expected acceleration and transmission response.
Improved durability - Thanks to corrosion-resistant, high-toughness construction
Manufactured with professional processes described as high toughness and corrosion-resistant, with a rustproof finish to limit surface degradation over time. The construction aims to resist pitting and surface wear from regular use.
Rollers retain shape and surface integrity longer, reducing the frequency of variator maintenance under normal riding conditions.
Practical maintenance - With a six-piece kit for full set replacement
Supplied as a six-piece set to allow replacing the rollers used together in variator assemblies, enabling a like-for-like refresh of all contact surfaces. Matching all rollers at once prevents mixing old and new components.
A full-set swap avoids unbalanced wear and helps restore smooth power delivery and consistent top-end performance.
✨ The 4 Key Reasons for GOOFIT Transmission Rollers
- Six-piece kit - Replace the entire variator roller set in a single maintenance session
- Exact sizing specification - Maintain consistent transmission behaviour and reduce vibration
- High-toughness construction - Withstand regular wear for longer maintenance intervals
- Corrosion-resistant finish - Resist rust and remain reliable in wetter riding conditions
📋 Technical Details at a Glance
- Category: Transmission Rollers
- Size (Outer diameter): 16mm
- Height: 13mm
- Fit model: Replacement for GY6 50, 139QMB, 49cc–50cc scooters
- Quantity: 6 pieces
❓ Frequently Asked Questions
Q: Will these rollers fit my scooter variator?
A: They are specified as replacements for GY6 50 and 139QMB 49cc–50cc scooter variators; confirm the variator uses 16mm by 13mm rollers before purchasing.
Q: How many rollers are included in the kit?
A: The kit contains six rollers, enabling a full-set replacement during one maintenance session.
Q: Are the rollers durable and rust-resistant?
A: Descriptions state professional manufacturing with high toughness and a corrosion-resistant, rustproof finish intended for long service life.
🏆 Our Verdict
Suitable for riders of GY6 50 and 139QMB 49cc–50cc scooters who need a direct, full-set variator roller replacement. Corrosion-resistant construction and matched sizing are the standout points, aimed at restoring smooth transmission performance. While cost details are not provided here, the six-piece kit and durable finish suggest sensible long-term value for regular commuters.
