{"product_id":"macemx-ultra-bee-brake-kit","title":"MaceMX Ultra Bee Brake Kit – 220mm or 240mm rotor","description":"\u003cp\u003eMaceMX Ultra Bee rear brake kit for e-bikes with a standard caliper mount. Not compatible with e-moto frames- the rotor diameter won't clear.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor size\u003c\/strong\u003e - 220mm fits Super73 RX\/S2\/ZX\/Z-Miami and Macfox\/Ridstar Q20; 240mm fits GhostCat F4X, P-51 Ace\/Bullet\/Ranger, and Freego X2. Confirm your model before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-bled option\u003c\/strong\u003e - Brakes ship bled from the factory. Minor re-bleeding after transit is normal if the lever feels spongy — small air bubbles can enter during shipping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBracket fitment\u003c\/strong\u003e - Some Macfox models and similar bikes use a non-standard brake post. A 180mm post mount adapter (sold separately) may be required to mount the bracket correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor clearance\u003c\/strong\u003e - The Ultra Bee disc runs approximately 40mm wider than a stock rotor. Verify frame and caliper clearance before installing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's in the box:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eultra bee rear brake assembly (pre-bled variants only)\u003c\/li\u003e\n\u003cli\u003emacemx ultra bee brake bracket\u003c\/li\u003e\n\u003cli\u003eupgraded 220mm or 240mm thickened rotor\u003c\/li\u003e\n\u003cli\u003emounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MaceMX","offers":[{"title":"203MM \/ Pre-Bled","offer_id":48579025436884,"sku":"sku-46492661153889","price":169.99,"currency_code":"USD","in_stock":true},{"title":"203MM \/ No Bleed","offer_id":48579025469652,"sku":"sku-46492661186657","price":169.99,"currency_code":"USD","in_stock":false},{"title":"220MM \/ Pre-Bled","offer_id":48579025502420,"sku":"sku-42749419192417","price":169.99,"currency_code":"USD","in_stock":true},{"title":"220MM \/ No Bleed","offer_id":48579025535188,"sku":"sku-46346474160225","price":136.99,"currency_code":"USD","in_stock":false},{"title":"240MM \/ Pre-Bled","offer_id":48579025567956,"sku":"sku-42749419225185","price":179.99,"currency_code":"USD","in_stock":true},{"title":"240MM \/ No Bleed","offer_id":48579025600724,"sku":"sku-46346474192993","price":136.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0796\/3374\/4084\/files\/B805D129-5EA0-4F1E-95AE-260C5121FAED.jpg?v=1788913750","url":"https:\/\/spectraldesigns.co\/products\/macemx-ultra-bee-brake-kit","provider":"Spectral Designs","version":"1.0","type":"link"}