Rear brake upgrade kit for the Super73 Ultra Bee, built around an OEM Ultra Bee caliper, 220mm rotor, and custom adapter. Designed for bikes with a stock 180mm rear rotor — verify your rotor size before ordering.

• Stock rotor compatibility: 180mm - this kit is confirmed for bikes running a 180mm stock rear rotor. If your bike has a 203mm rotor, fitment is not confirmed — do not order without verifying first.
• 220mm rotor included - 3.1mm thick. Larger diameter than stock 180mm; provides more heat dissipation on long descents.
• Kit contents - OEM Ultra Bee rear caliper, 220mm rotor, and brake adapter. Verify your current setup matches before installing.

What's in the box:

• 1x OEM Ultra Bee rear caliper
• 1x 220mm × 3.1mm rotor
• 1x brake adapter