Jagwire Sport SR1 Disc Bicycle Brake RotorsJagwire Sport SR1 Disc Brake Rotors feature a high quality, stainless steel machined braking surface that ensures consistent stopping power and superior modulation.

Enduring sound for advanced notice and safety

Ultra-Lightweight Design: Optimized for a "barely-there" feel

and trail obstacles with greater confidence

silent stopping and ease of replacement:

and longer-lasting experience

Surly Ultra New Rear Hubs

Made from 37 recycled plastic bottles and coated with 100% PFC-free water repellency

Thanks to its thin construction and Smart Seam technology

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ensuring reliable power transfer and precision shifting under e-bike load

Top material: Natural rubber Cover material: Plastic Shell material: Fiberglass Rail material: Steel

Weight: 138g (at 50mm length)