Uprated Yamaha Aerox/ Minarelli rear torque spring.

Available in 3.8mm (sports 70 cylinders) or 4.1mm (high end, race)

• MBK Nitro 50
• Yamaha Aerox 50
• Yamaha Jog (all)
• Yamaha Neos 50 (2-stroke)
• Yamaha BWS 50cc
• Yamaha Slider
• MBK 50 (all)
• Malaguti 50cc F10,F12,F15
• CPI 50cc
• Keeway 50cc
• MBK Ovetto 50