MFC·passion Racing Scooter Variator Kit – 5g/7g/9g Rollers for GY6 Engines (Red) Front Clutch

Upgrade your ride with the MFC·passion Variator Kit

Designed for a wide range of 50cc/100cc four-stroke GY6 and QMB engines, this red-varnished variator kit combines bold aesthetics with solid engineering. The precision machining, robust metal construction, and carefully selected components offer a durable upgrade for daily commutes, weekend rides, and light off-road use alike. The result is a more engaging rider experience without compromising reliability on the road.

Key compatibility and what's included

This variator kit is built as a direct replacement for common GY6/QMB139 engines, enabling a straightforward swap when your current unit wears out or loses efficiency. It emphasizes a practical approach to maintenance and performance tuning for a variety of Chinese-made scooters, mopeds, and ATVs.

• Fits 50cc/100cc 4-stroke GY6/QMB139 engines, enabling a hassle-free upgrade from worn assemblies.
• All-metal construction delivers durability for everyday riding and longer service life.
• Roller weights include 5g, 7g, and 9g for flexible tuning and ride feel.

What you get and how it may help your ride

The package comprises a complete variator assembly along with a balanced selection of rollers. While results vary by setup and riding style, this kit offers a tunable feel that may influence take-off response and acceleration characteristics by weight choice and gearing.

• 1 x Variator Assembly with three 5g rollers, three 7g rollers, and three 9g rollers.
• Specifications include outer diameter 90mm, inner diameter 20mm, boss bush 20x38mm, roller size 16x13mm.
• Eye-catching red finish adds a sporty look to your drive system while remaining highly functional.

Notes on installation and support

Designed for direct replacement, this kit suits riders comfortable with basic mechanical tasks. If you have questions or run into any snags, our team is ready to help ensure a smooth shopping experience.

Practical use cases

Ideal for urban commutes, casual weekend rides, or light ATV use where a tunable variator setup can adapt to different road conditions. By experimenting with roller weights, riders can explore alternative performance profiles without swapping major engine components.