{"product_id":"pre-bled-ultra-bee-rear-brake-kit-220mm-rotor-super73-ebike","title":"Pre-Bled Ultra Bee Rear Brake Kit for Super73, Macfox, Ridstar \u0026 Other E-bikes","description":"\u003cp class=\"p2\"\u003eBring \u003cspan class=\"s1\"\u003e\u003cb\u003eSur-Ron Ultra Bee braking performance\u003c\/b\u003e\u003c\/span\u003e to your high-performance e-bike with the \u003cspan class=\"s1\"\u003e\u003cb\u003eUltra Bee Brake Conversion Kit\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThis complete rear brake conversion package combines a \u003cspan class=\"s1\"\u003e\u003cb\u003epre-bled Sur-Ron Ultra Bee rear brake assembly\u003c\/b\u003e\u003c\/span\u003e, CNC adapter bracket, \u003cspan class=\"s1\"\u003e\u003cb\u003eupgraded 220mm rotor\u003c\/b\u003e\u003c\/span\u003e, spacers, and required mounting hardware.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eDesigned for compatible e-bikes with the appropriate brake mounting configuration, this kit provides the core components needed to adapt the larger Ultra Bee rear braking system to \u003cspan class=\"s1\"\u003e\u003cb\u003eSuper73, Macfox, Ridstar, ActBest and other compatible e-bike builds\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eImportant:\u003c\/b\u003e This kit is designed for compatible e-bike applications. Fitment is not universal and should be verified before ordering.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eWhat’s Included\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003ePre-Bled \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cb\u003eSur-Ron Ultra Bee Rear Brake Assembly\u003c\/b\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003eSilver CNC \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cb\u003eUltra Bee Brake Adapter Bracket\u003c\/b\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e220mm × 2.7mm Rotor\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eAdapter spacers\u003c\/li\u003e\n\u003cli\u003eRequired mounting hardware\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eStocked and shipped directly by K. Mods\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eConfirmed Fitment\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003e220mm Rotor Kit\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSuper73 RX\u003c\/li\u003e\n\u003cli\u003eSuper73 S2\u003c\/li\u003e\n\u003cli\u003eSuper73 ZX\u003c\/li\u003e\n\u003cli\u003eSuper73 Z Miami\u003c\/li\u003e\n\u003cli\u003eMacfox compatible models\u003c\/li\u003e\n\u003cli\u003eRidstar Q20\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003eFor \u003cspan class=\"s1\"\u003e\u003cb\u003eActBest, Freego, and other e-bike platforms\u003c\/b\u003e\u003c\/span\u003e, fitment can vary by model and brake mounting configuration. Verify your existing setup before ordering.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eRotor Sizing\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003eUltra Bee rear brake conversions generally require a rotor approximately \u003cspan class=\"s1\"\u003e\u003cb\u003e40mm larger than the bike’s original rotor\u003c\/b\u003e\u003c\/span\u003e to properly position the larger Ultra Bee caliper.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003e\u003cb\u003eExample:\u003c\/b\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003e180mm stock rotor → \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e220mm rotor\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThis kit includes the \u003cspan class=\"s1\"\u003e\u003cb\u003e220mm rotor\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eAlways verify your current rotor diameter, hub mounting pattern, wheel clearance, and brake mounting configuration before ordering.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBrake Mount \/ Adapter Fitment\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003eSome e-bikes, including certain \u003cspan class=\"s1\"\u003e\u003cb\u003eMacfox, ActBest, and similar models\u003c\/b\u003e\u003c\/span\u003e, may require replacing the factory brake post\/adapter with a \u003cspan class=\"s1\"\u003e\u003cb\u003estandard 180mm post-mount adapter\u003c\/b\u003e\u003c\/span\u003e before installing the K. Mods Ultra Bee bracket.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThis additional adapter is \u003cspan class=\"s1\"\u003e\u003cb\u003enot included\u003c\/b\u003e\u003c\/span\u003e with the kit.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eIf your bike requires one:\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003ca href=\"https:\/\/www.amazon.com\/BUCKLOS-Caliper-Accessories-Machined-Aluminum\/dp\/B08D9JRTGB\/ref=sr_1_1_sspa?dib=eyJ2IjoiMSJ9.KTNm0IGKTNIEYZalQ-OcHGvtFxgG-2xNkS0LXukOphXy3MPp8HkAFb5c8tikwohKq5zDZVKJkkhu96NQMyx9wNSvR2f7S5NRKg8zU-jJb9azCami2485DueXOhNpUM0nKmH3GIO4sWbEyo8JBxSzg3jyRrab81mpQ07AH-KgTnEgLFcSpAo48Z7BHI1IL-Oo7vfxDZQTjvA7u-SPUsbbdHMICeIqYpMZTb_zUPp12UdOk0ySjtZ5G3i5rJw1Inza5sKcwhap40IVATcG5F-TW-zsbmlqjKENUZBff7bO-fw.MvZaNoLc3jXQrcVhehRs-P1eWxsSaWCRIo142JiU4Q4\u0026amp;dib_tag=se\u0026amp;hvadid=823164215248\u0026amp;hvdev=c\u0026amp;hvexpln=67\u0026amp;hvlocphy=9011490\u0026amp;hvnetw=g\u0026amp;hvocijid=6845547508970929797--\u0026amp;hvqmt=b\u0026amp;hvrand=6845547508970929797\u0026amp;hvtargid=kwd-318626269584\u0026amp;hydadcr=8408_14001150\u0026amp;keywords=180mm%2Bdisk%2Bbrake%2Badapter\u0026amp;mcid=09696b9c9b2e3dd2ac9c44a6c321789f\u0026amp;qid=1788841092\u0026amp;sr=8-1-spons\u0026amp;sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY\u0026amp;th=1\" rel=\"noopener\" target=\"_blank\"\u003e⁠180mm Post Mount Adapter on Amazon\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePre-Bled Ultra Bee Brake\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eSur-Ron Ultra Bee rear brake assembly arrives pre-bled\u003c\/b\u003e\u003c\/span\u003e for easier installation.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eShipping and handling can occasionally introduce small air bubbles into a hydraulic brake system. If the brake lever feels soft or spongy after installation, a minor brake bleed may be required to restore proper lever feel and braking performance.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eInstallation \u0026amp; Safety\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003eThis is a \u003cspan class=\"s1\"\u003e\u003cb\u003eperformance brake conversion\u003c\/b\u003e\u003c\/span\u003e, not a universal bolt-on replacement.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eProper rotor alignment, caliper positioning, mounting hardware, wheel and frame clearance, and hydraulic brake operation must be verified before riding.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eProfessional installation is recommended if you are unfamiliar with hydraulic brake systems or custom brake conversions.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDirect Ship by K. Mods\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eStocked and fulfilled directly by K. Mods\u003c\/b\u003e for faster order processing, shipping, and product support.\u003c\/p\u003e","brand":"K. Mods","offers":[{"title":"Default Title","offer_id":48994348007577,"sku":null,"price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0442\/8146\/2937\/files\/Ultra_Bee_Rear_Full_Brake_Kit_For_Ebikes.png?v=1788854719","url":"https:\/\/kmodsracing.com\/products\/pre-bled-ultra-bee-rear-brake-kit-220mm-rotor-super73-ebike","provider":"K. Mods","version":"1.0","type":"link"}