BWS100/ZUMA100 Driven Spring

Stable Belt Pressure. Smooth Shifting. Adjustable Acceleration Response.

The Driven Spring for YAMAHA BWS100 / ZUMA100 is designed for riders who demand precise CVT tuning and consistent performance. Available in four tension levels — Blue (1000RPM), Orange (1200RPM), Yellow (1500RPM), and Red (2000RPM) — this center spring adjusts pulley reaction force to fine-tune acceleration and backshift speed. Made from durable heat-treated steel, it provides stable tension and long-lasting elasticity for both street and performance setups.

🔹 Highlights

  • Four RPM Options — 1000 / 1200 / 1500 / 2000 for precise CVT response tuning

  • Color-Coded Design — Easy identification: Blue / Orange / Yellow / Red

  • Enhanced Belt Grip — Maintains consistent drive belt pressure under load

  • Smooth Downshift Control — Improves throttle recovery and speed transition

  • Heat-Treated Spring Steel — Ensures lasting durability and performance stability

Product Specifications

  • Type: Driven Spring (Center Spring)

  • RPM Rating: 1000 (Blue) / 1200 (Orange) / 1500 (Yellow) / 2000 (Red)

  • Fitment: YAMAHA BWS100 / ZUMA100

  • Focus: CVT tuning & acceleration balance

  • Package Includes: Driven Spring ×1

🔧 Installation Notes

  • Choose spring tension based on desired acceleration and backshift response

  • Higher RPM springs increase takeoff force and engine braking effect

  • Compatible with OEM or modified CVT systems

  • Verify spring preload alignment during assembly

Power You Can Trust.