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Serbia (RSDРСД) Brother provides a three-year warranty against manufacturing and material defects for the original purchaser, with proof of purchase required. Paintwork, normal wear, misuse and damage caused by neglect or modification are excluded. Refer to the manufacturer’s full warranty terms for the conditions that apply. []
Armenia (AMDդր.) Romania (RONLei) Côte d’Ivoire (XOFFr) Color Seychelles (GBP£) {"@context":"http:\/\/schema.org\/","@id":"\/products\/brother-cycles-stroma-frameset#product","@type":"ProductGroup","brand":{"@type":"Brand","name":"Brother Cycles"},"category":"Framesets","description":"The Brother Cycles Stroma is an all-road frameset for year-round road riding, longer distances and rougher tarmac. A Reynolds 725 steel main triangle is paired with a full-carbon road fork, combining a traditional steel frame with modern thru-axle and flat-mount fittings.Tyre clearance is up to 38mm without mudguards, or 32mm with full guards fitted. Mudguard eyelets, rear rack mounts and two bottle positions make the Stroma practical for commuting and distance riding as well as an unladen road build. Internal dynamo routing in the fork supports a lighting setup; the frame’s Di2 ports can also route a rear dynamo-light cable.This listing is for the frame and fork, with complete-bike images supplied as build inspiration. Brother notes that the orange downtube branding is brighter in person than it appears in the photographs. Select your size and colour, then check the component standards and geometry below before choosing the remaining parts.Technical specifications\nFrame tubing: Reynolds 725 heat treated chromoly double-butted main triangle, ED coated. Reynolds 520\/500 custom formed rear triangle.\nBrake compatibility: flat mount, 160mm max rotor size\nRear Dropouts: 12x142mm TA (included)\nSeat post diameter: 27.2mm\nSeat clamp diameter: 30mm (included)\nHeadset: 44mm, ZS44\/28.6 upper, EC44\/40 lower (not included)\nFront derailleur clamp diameter: 28.6mm\nBottom bracket shell: 68mm bottom bracket, ISO threaded\nMaximum tyre clearance: up to 700c x 38mm (32mm with mudguards)\nFork: 1.5″ – 1.1\/8″ tapered steerer carbon monocoque disc fork, mudguard mounts. 12x100mm TA (included), dynamo routing\n2 sets bottle cage mounts on all sizes\nRear rack and mudguard mounts\nDi2 cable ports\nChainring clearance: up to 53-39t double, 50t single\nFrame weight (medium): 1.97kg\nFork weight (uncut steerer): 0.50kg\nFrame geometry\n\nSize\nxSmall\nSmall\nMedium\nLarge\nxLarge\n\n\nSeat Tube (C-T)\n500mm\n520mm\n540mm\n560mm\n580mm\n\n\nTop Tube (C-C)\n510mm\n526mm\n542mm\n557mm\n572mm\n\n\nTop Tube (Effective)\n522mm\n540mm\n557mm\n572mm\n587mm\n\n\nHead Tube\n110mm\n125mm\n140mm\n160mm\n180mm\n\n\nHead Angle\n71\n72\n72.5\n72.5\n72.5\n\n\nSeat Angle\n74\n73.5\n73\n73\n73\n\n\nBB Drop\n70mm\n70mm\n70mm\n70mm\n70mm\n\n\nChainstay\n420mm\n420mm\n420mm\n420mm\n420mm\n\n\nFork Length (A-C)\n381mm\n381mm\n381mm\n381mm\n381mm\n\n\nFork Rake\n45mm\n45mm\n45mm\n45mm\n45mm\n\n\nStack\n532mm\n550m\n563mm\n585mm\n604mm\n\n\nReach\n369mm\n377mm\n385mm\n393mm\n402mm\n\n\nWheelbase\n990mm\n995mm\n1002mm\n1017mm\n1032mm\n\nAvailable options\n\nFrame Size: Large, Medium, Small, X-large, X-small\n\nColour: Black, Light Grey\nFrame warrantyBrother provides a three-year warranty against manufacturing and material defects for the original purchaser, with proof of purchase required. Paintwork, normal wear, misuse and damage caused by neglect or modification are excluded. Refer to the manufacturer’s full warranty terms for the conditions that apply.","hasVariant":[{"@id":"\/products\/brother-cycles-stroma-frameset?variant=59174475628927#variant","@type":"Product","image":"https:\/\/projektride.co.uk\/cdn\/shop\/files\/brother_cycles_016.jpg?v=1794490264\u0026width=1920","name":"Brother Cycles Stroma Frameset - X-small \/ Black","offers":{"@id":"\/products\/brother-cycles-stroma-frameset?variant=59174475628927#offer","@type":"Offer","availability":"http:\/\/schema.org\/InStock","price":"1249.00","priceCurrency":"GBP","url":"https:\/\/projektride.co.uk\/products\/brother-cycles-stroma-frameset?variant=59174475628927"},"sku":"BC-46915-46916"},{"@id":"\/products\/brother-cycles-stroma-frameset?variant=59174475661695#variant","@type":"Product","image":"https:\/\/projektride.co.uk\/cdn\/shop\/files\/brother_cycles_016.jpg?v=1794490264\u0026width=1920","name":"Brother Cycles Stroma Frameset - Small \/ Black","offers":{"@id":"\/products\/brother-cycles-stroma-frameset?variant=59174475661695#offer","@type":"Offer","availability":"http:\/\/schema.org\/InStock","price":"1249.00","priceCurrency":"GBP","url":"https:\/\/projektride.co.uk\/products\/brother-cycles-stroma-frameset?variant=59174475661695"},"sku":"BC-46915-46917"},{"@id":"\/products\/brother-cycles-stroma-frameset?variant=59174475694463#variant","@type":"Product","image":"https:\/\/projektride.co.uk\/cdn\/shop\/files\/brother_cycles_016.jpg?v=1794490264\u0026width=1920","name":"Brother Cycles Stroma Frameset - 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Spain (EUR€) If the item is showing in stock, we aim to post the product within 24 hours. Please allow 5 working days to receive the item. Ghana (GBP£) m_property_enabled":true,"custom_line_item_property_text":null,"preorder_button_text_color":"#ffffff","preorder_button_background_color":"#565557","preorder_button_colors_enabled":true,"markets_enabled":false,"shopify_market_ids":[],"use_shopify_selling_plan":true,"use_simplified_shipping_text":true,"payment_options":[{"billing_type":"no_remaining_balance","billing_checkout_charge_type":"percentage","billing_checkout_charge_amount":null,"billing_checkout_charge_percentage":"100.0","billing_at":"2025-07-26T09:20:38.472Z","billing_after_n_intervals":7,"billing_after_interval_type":"day","pricing_type":"no_discount","pricing_amount":null,"pricing_percentage":null,"billing_title":"Full payment","billing_description":null,"discount_text":"Save {{ discount }}","shopify_selling_plan_id":713071886719,"is_default":true,"type":"full","translations":{}}],"require_preorder_acknowledgement":false,"preorder_acknowledgement_text":"I acknowledge and agree to the preorder terms and conditions for this product.","disable_butto
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:16:04.076Z"}];window._RestockRocketConfig.product = { id: 15691980505471, title: "Humber Flex Plus", handle: "humber-flex-plus", vendor: "Humber Bicycles", tags: ["Cargo bike","E-bike","Electric bike","Family bike","Humber"], available: false, options: ["Color","Battery size"], selling_plan_groups: [], featured_image: "\/\/projektride.co.uk\/cdn\/shop\/files\/8025100252_Humber_Flex_Plus_Sandstone_1_shadow.jpg?v=1779891810\u0026width=800", variants: [{ id: 57627496874367, title: "Sandstone \/ Boost \/ 540 Wh", available: false, sku: "HB-HUMBER-FLEX-PLUS-SANDSTONE-BOOST-540-WH", price: 179900 }, { id: 57627496907135, title: "Sandstone \/ Long Range \/ 720 Wh", available: false, sku: "HB-HUMBER-FLEX-PLUS-SANDSTONE-LONG-RANGE-720-WH", price: 209900 }, { id: 57627496939903, Buy, sell and ride in confidence on ProjektRide’s premium bikes Gibraltar (GBP£) ys = []; var _sqAlwaysPlanIds = []; var _sqGateAlloc = (_sqc.readFlags && _sqc.readFlags.enable_storefront_plan_offers === true && _sqc.variantSellingPlanIds) || null; (Array.isArray(_sqc.sellingPlans) ? _sqc.sellingPlans : []).forEach(function (p) { if (!(p && p.enabled && p.inventory_provider === 'always')) return; _sqAlways = _sqAlways.concat(p.variant_ids || []); if (_sqGateAlloc && p.variant_ids_truncated) { _sqAlwaysPlanIds.push(Number(p.shopify_selling_plan_id), Number(p.default_shopify_selling_plan_id)); (Array.isArray(p.payment_options) ? p.payment_options : []).forEach(function (o) { if (o) _sqAlwaysPlanIds.push(Number(o.shopify_selling_plan_id)); }); } }); var _sqAllocAlways = function (id) { var a = _sqGateAlloc && _sqGateAlloc[id]; return Array.isArray(a) && a.some(function (planId) { return planId && _sqAlwaysPlanIds.indexOf(Number(planId)) !== -1; }); }; var _sqArm = false; if (_sqOn && (_sqc.preordersConfigured Quick Links