Qiroll has rich experience in the field of electric friction drives. Our products have great advantages in function, size and power, and are widely used in bicycles and other industries. If you have other fields …

  • QR-E MUTE +B60 Battery Kit Quick View
    • QR-E MUTE +B60 Battery Kit Quick View
    • QR-E MUTE +B60 Battery Kit
    • $299.00
    • QR-E mute 250W+B60 battery Electronic clutch and manual clutch Suitable for bicycles: road bikes, off-road bikes (use road tire), city bikes, folding bikes Need 6 * 4CM space to install  It may take some DIY to send a photo of the bike for confirmation. Includes battery confirmation delivered to this location prior to shipment Battery size: 60 * 190MM Tire…
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  • QR-E PRO +H70 Battery Kit Quick View
    • QR-E PRO +H70 Battery Kit Quick View
    • QR-E PRO +H70 Battery Kit
    • $490.00
    • QR-E PRO 320W+H70  33V battery Electronic clutch and manual clutch Regenerative braking Two-way rotation Suitable for bicycles: road bikes, off-road bikes (use road tire), city bikes, folding bikes Need 6 * 4CM space to install It may take some DIY to send a photo of the bike for confirmation. Includes battery confirmation delivered to this location prior to shipment Battery…
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