{"product_id":"sturmey-archer-hub-3-speed-rotary-70mm-drum-brake-36h","title":"Sturmey Archer Hub 3-Speed Rotary 70mm Drum Brake 36H","description":"\u003cp\u003e***PLEASE NOTE THAT THESE HUBS COME ASSEMBLED FOR REAR FACING \/ HORIZONTAL DROPOUTS. FOR USE WITH VERTICAL DROPOUTS SOME RE-ASSEMBLY IS REQUIRED. INSTRUCTIONS AVAILABLE IN DOWNLOADABLE DOCUMENTS.***\u003c\/p\u003e\n\u003cp\u003eSturmey Archer Rear Hub (Alu)\u003cbr\u003eRX-RD3 3-Speed Internal Gear Hub with Rotary Gear Selection and 70mm Drum Brake 36H Silver\u003c\/p\u003e\n\u003cp\u003e3-Speed internal gear hub with gear ratio of 177%\u003cbr\u003eGear steps of 33% and 33%\u003cbr\u003eRotary gear selector without protrusions outside the frame\u003cbr\u003eDesigned for heavy duty use\u003cbr\u003eA356 Aluminium hub shell\u003cbr\u003e36 Spoke holes, 135mm OLD\u003cbr\u003eCompatible with 17 to 19 teeth sprocket\u003cbr\u003eNatural alloy finish\u003cbr\u003eWeight – 1440g\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGear Ratio\u003c\/strong\u003e\u003cbr\u003e– Overall Range – 177%\u003cbr\u003e– Gear 1 – 75% (Gear 2 – 25%%)\u003cbr\u003e– Gear 2 – 100% (Direct Drive)\u003cbr\u003e– Gear 3 – 133% (Gear 2 + 33%)\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDownloads 👇🏻\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.thecycledivision.com\/wp-content\/uploads\/2026\/01\/ZRX-RD3-Specification.pdf\" title=\"Specification\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca rel=\"noopener\" title=\"Specification\" href=\"https:\/\/www.thecycledivision.com\/wp-content\/uploads\/2026\/01\/ZRX-RD3-Specification.pdf\" target=\"_blank\"\u003eSpecification\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.thecycledivision.com\/wp-content\/uploads\/2026\/01\/ZRX-RD3-Parts-List.pdf\" title=\"Parts List\"\u003e\u003c\/a\u003e\u003ca rel=\"noopener\" title=\"Parts List\" href=\"https:\/\/www.thecycledivision.com\/wp-content\/uploads\/2026\/01\/ZRX-RD3-Parts-List.pdf\" target=\"_blank\"\u003eParts List\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.thecycledivision.com\/wp-content\/uploads\/2026\/01\/ZRX-RD3-Manual.pdf\" target=\"_blank\"\u003eManual\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sturmey Archer","offers":[{"title":"Default Title","offer_id":47860813889787,"sku":"ZRX-RD3","price":75.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0338\/5652\/0325\/files\/ZRX-RD3_1.jpg?v=1768488048","url":"https:\/\/www.sprocketandgear.co.uk\/products\/sturmey-archer-hub-3-speed-rotary-70mm-drum-brake-36h","provider":"Sprocket \u0026 Gear","version":"1.0","type":"link"}