Surron Hyper Bee Ultra Bee Brake Kit

This kit upgrades your Surron Hyper Bee brakes at the rear, swapping the stock brake and 160mm rotor for a Surron Ultra Bee caliper on a 220mm rotor. It arrives pre-bled and bolts to the factory rear brake mount. No cutting, no fabrication. What's in the box? 1 rear brake system, pre-bled: FactoryZ Custom or OEM Surron caliper with a steel-braided brake line to an OEM Surron master cylinder, filled with Motul DOT 5.1 brake fluid 1 rotor 1 caliper bracket Specs: Pre-bled with Motul DOT 5.1 brake fluid - filled and bled before it ships. Nothing to bleed on install. 220mm x 2.3mm solid rotor, FactoryZ high carbon stainless steel - 60mm larger than the stock 160mm rear rotor, so the caliper has more leverage over the rear wheel. 6061-T6 aluminum caliper bracket, anodized black or silver - locates the Ultra Bee caliper on the stock Hyper Bee rear mount. Bolt-on. OEM Surron master cylinder - the factory Surron lever and reservoir. Steel-braided brake line - resists swelling under pressure, so the lever stays consistent. FactoryZ Custom caliper - the Gen1 Surron Ultra Bee caliper design without the logo. The lower-cost option. OEM Surron caliper - the genuine 2025/2026 Surron-branded caliper, roughly 5% larger with revised internal oil routing. The true OEM part. Fits the Surron Hyper Bee: Surron Hyper Bee (rear only) Built for the Hyper Bee rear brake mount. The front brake stays stock. Surron Hyper Bee Ultra Bee Brake Kit FAQ Will this fit my Hyper Bee? Yes. The kit is made for the Surron Hyper Bee, and the caliper bracket bolts straight to the stock rear brake mount. Do I need any other parts? No. The pre-bled hydraulic system, rotor, and caliper bracket cover the full rear conversion. Nothing to source separately. Is it pre-bled? Yes. Caliper, steel-braided line, and master cylinder come filled and bled as one sealed system. Mount it, route the line, adjust the lever. How hard is the install? Bolt-on with hand tools. Pull the stock rear brake, fit the bracket and rotor, then bolt up the caliper and master cylinder. No drilling, cutting, or fabrication. How does the rotor compare to stock? The Hyper Bee ships with a 160mm rear rotor. This kit runs a 220mm x 2.3mm rotor, 60mm larger. It is matched to the included bracket, so it is the only size offered. Which caliper should I pick? The FactoryZ Custom caliper is the Gen1 Ultra Bee design without Surron branding, at a lower price. The OEM Surron caliper is the current genuine part, slightly larger with revised oil routing. Both use the same bracket. Is this a front or rear brake? Rear only. The front brake on your Hyper Bee is untouched. What brake fluid does it use? Motul DOT 5.1. It ships filled with it, so use the same fluid to top off or rebleed. Never mix in mineral oil. Ships from USA!