Description
2000 RPM Contra Spring for Yamaha Zuma 50 2T and Minarelli Engines
The 2000 RPM Compression/Contra Spring is designed for the Yamaha Zuma 50 2T and compatible Minarelli two-stroke engines. This important component regulates the rear driven pulley, ensuring that your CVT operates effectively within the desired power range. It is one of the Yamaha Zuma scooter parts that can significantly improve your performance setup by maintaining belt pressure and controlling upshifts under load.
Functionality and Performance
This red spring plays a key role in transmission tuning. By providing higher resistance, it helps the driven pulley to maintain appropriate pressure on the drive belt. This allows the engine to sustain revs longer, keeping it within the effective power band during acceleration.
Installation and Compatibility
The 2000 RPM designation indicates a tuning rating rather than a specific engagement speed. Ensure that the spring’s inner diameter of 44 mm and length of 108 mm match your rear-pulley spring seats before installation. This spring is specifically designed for two-stroke applications and is not compatible with four-stroke models.
Specifications
- Component: Rear driven-pulley compression / contra spring
- Tuning Rating: 2000 RPM
- Wire Diameter: 4.0 mm
- Inner Diameter: 44.0 mm
- Length: 108.0 mm
- Color: Red
- Country of Origin: Taiwan
- OEM Part Number: 660A09OG20
Fitment
This contra spring is compatible with the following vehicles:
- Yamaha Zuma 50cc two-stroke
- CSC Bella Classic 50
- CSC Go
- CSC Go Max
- CSC Nitro Sport 50
- CSC Pug 50
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
Shop more: Yamaha Zuma Parts · Minarelli 50cc / Yamaha Jog Parts · Scooter Transmission & Final Drive · Scooter Parts
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