Boost your scooter’s acceleration and shifting response with the Chalon 1000RPM Red Torque Compression Spring (Part #SPRING-F5A-C01). Designed for use in CVT transmissions on 50cc–150cc scooters, this performance spring increases the RPM threshold for upshifting, resulting in quicker throttle response and improved low-end power. Whether you're upgrading for performance or replacing a worn spring, Chalon's high-tension design ensures durability and consistent operation—perfect for street or sport builds. 1000RPM Red Torque Spring – Optimizes CVT upshift timing for better acceleration Compatible with 50cc–150cc CVT Scooters – GY6, QMB139, and other platforms High-Performance Upgrade – Improves launch power and low-end response Durable Construction – Built to withstand heat and repeated compression Part Number: SPRING-F5A-C01 Brand: Chalon – Reliable aftermarket scooter components