Shimano Steps RT-EM810 Disc Brake Rotor - 203mm Center Lock External Lockring Rear Only Magnet Bracket MFPN=DROPOUT-580 4 1 1/8" Aluminum Orange

4 1 1/8" Aluminum Orange

Battery life - Up to 20 hours in demanding use cases or 60 hours in battery saver mode

BCD Direct Mount SRAM 8 Bolt BB Inclusion No Teeth 56 Connectivity ANT+ BT Speed 12

Laboratory tested and team proven 4130 chromoly with post-weld heat-treatment

Shimano Steps RT-EM810 Disc Brake Rotor - 203mm Center Lock External Lockring Rear Only Magnet Bracket MFPN=DROPOUT-580 4 1 1/8" Aluminum OrangeShimano RT EM810 disc brake rotors for speed sensor systems deliver powerful and consistent brake performance in all riding conditions. The ICE TECHNOLOGIES FREEZA rotor significantly reduces heat build up in the brake system to ensure consistent high performance braking even on the steepest downhill stretches. Recommended brake kit: Shimano M9120 M8120 M7120 1. 5mm thickness Centerlock mounting system makes installing and removing rotors quick and