NCY Contra Spring — Honda DIO / GY6 50cc CVT Tuning Spring

NCY Contra Spring for Honda DIO & GY6 50cc Scooters

Dial in your CVT performance with the NCY Contra Spring — an essential upgrade whenever you modify your 50cc scooter's engine, exhaust, or displacement. Engineered for Honda Elite, Honda Aero, and GY6 50cc platforms, this spring directly controls clutch engagement RPM for smoother acceleration and optimized power delivery.

Why Upgrade Your Contra Spring?

Every time you change your exhaust, bore kit, or other engine components, your stock contra spring falls out of tune. The NCY Contra Spring lets you precisely match clutch engagement to your build — reducing belt slip, improving throttle response, and extending CVT component life.

Available Engagement RPM Options

• 1000 RPM — Low engagement for relaxed, city-friendly riding
• 1500 RPM — Mid-range engagement, ideal for stock or mildly modified engines
• 2000 RPM — High engagement for performance builds and modified engines

Compatibility

• Honda Elite
• Honda Aero
• GY6 50cc scooters
• Honda DIO

Looking for more CVT tuning options? Check out our S23 Springs for additional engagement profiles.