Anti-Torsion Spring Seat for Yamaha Zuma / Jog 50, Minarelli 2T

Anti-Torsion Spring Seat for Yamaha Zuma 50 and Compatible Models

This anti-torsion spring seat suits Yamaha Zuma 50, Jog 50, and scooters built around the Minarelli 1E40QMB engine. It plays a key role in how the CVT transmission performs. Among Yamaha Zuma scooter parts, it works to reduce spring bind, which supports smoother, more even shifting. Riders who want quicker acceleration and better throttle response can benefit from fitting it.

Design and How It Works

The part is a steel cylinder with a ball bearing race built in. Because the contra spring can travel freely as it compresses, spring bind is kept to a minimum. Small steel ball bearings and rubber seals hold the bearings in position, which helps the assembly work as intended.

When to Swap It Out

Replace this part any time the contra or torque spring is replaced. Spring bind often causes flat spots during acceleration. For the best results, clean the rear pulley components thoroughly and apply high-temperature CVT grease before putting everything back together.

Specifications

• Material: High-strength steel alloy cup with steel ball bearings and rubber seals
• Fits: Yamaha Zuma 50 (1989-2011), Jog 50, Vino 50 (2-stroke) and 50cc 2-stroke Minarelli 1E40QMB scooters
• Origin: Made in Taiwan | ISO 9001 certified

Compatible Models

Fits:

• Yamaha Zuma 50 (1989-2011)
• Yamaha Jog 50
• Yamaha Vino 50 (2-stroke)
• Adly Thunderbike, Silver Fox, GTR 50, Oliver, Aragon
• CPI Thunderbike, Silver Fox, GTR 50, Oliver, Aragon
• Various Chinese brands (50cc 2-stroke with 1E40QMB engine)

How to choose: Confirm your engine is a 50cc 2-stroke with a Minarelli-type 1E40QMB engine and a Minarelli-style rear pulley.

Browse related parts: Yamaha Zuma Parts · Minarelli 50cc / Yamaha Jog Parts · Scooter Seats · Scooter Parts