Minarelli Yamaha 50cc CVT Contra Spring 1000 RPM

1000 RPM CVT Contra Spring for Minarelli 50cc and Yamaha Scooters

This 1000 RPM contra spring is built for Minarelli 50cc 2-stroke setups, Yamaha models included. It sets the engagement point of the CVT by applying the pressure the drive belt needs. Because of this, it helps the scooter move into higher gear ranges sooner, which suits city riding and low-speed torque. It is one of the Minarelli 50cc / Yamaha jog scooter parts that can noticeably change how your scooter performs.

How the Contra Spring Works

Within the CVT, the contra spring governs when the drive belt engages and sets how quickly the transmission shifts from a low gear to a higher one. Its 1000 RPM rating means the higher gear range comes in earlier than with springs rated higher. For riders who want fast pickup in stop-and-go traffic, that earlier engagement can be useful.

Build and Fit

This spring is produced in Taiwan to exact dimensions. It measures 4.0mm across the wire, 44.0mm on the inside diameter, and 108.0mm in length. Those dimensions are intended to seat properly in a range of Minarelli engines, mainly those fitted to urban scooters.

Specifications

• Rating: 1000 RPM
• Wire Diameter: 4.0mm
• Inner Diameter: 44.0mm
• Length: 108.0mm
• Made in: Taiwan
• Fits: Minarelli-type 50cc 2-stroke CVT engines, including Yamaha Zuma 50cc 2T and CSC 50cc models

Compatible Models

Fits:

• CSC Bella Classic 50
• CSC Go
• CSC Go Max
• CSC Nitro Sport 50
• CSC Pug 50
• Yamaha Zuma 50cc 2T
• Yamaha Vino, BWS, Jog (Minarelli 50cc 2-stroke CVT)
• Aprilia SR50, Mojito (Minarelli 50cc 2-stroke CVT)
• CPI, Peugeot, MBK (Minarelli 50cc 2-stroke CVT, similar applications)

How to choose: Confirm the spring's 108.0mm length and 44.0mm inner diameter against your CVT clutch, then pick the 1000 RPM rating if you want engagement to happen earlier.

Shop more: Minarelli 50cc / Yamaha Jog Parts · Yamaha Scooter Parts · Scooter Transmission & Final Drive · Scooter Parts