{"product_id":"genesis-croix-de-fer-40-gravel-bike-2026","title":"Genesis Croix de Fer 40 2026 Gravel Bike with Shimano GRX 1x12-Speed and Tubeless-Compatible Wheels","description":"\u003cp\u003eThe \u003ca href=\"\/collections\/genesis\"\u003eGenesis\u003c\/a\u003e Croix de Fer 40 2026 is a highly capable \u003ca href=\"\/collections\/gravel-bikes\"\u003egravel bike\u003c\/a\u003e built for riders who want a clean, focused build that performs across a wide range of terrain. Constructed around a durable steel frame, it delivers the ride comfort, compliance, and long-term reliability that gravel and adventure riding demands. Generous tyre clearance for 700x45c tyres means you can run a wide, confidence-inspiring setup on loose gravel, dirt roads, and mixed surfaces without compromise. Available in sizes from X-Small to X-Large, it's a unisex platform designed to fit a wide range of riders.\u003c\/p\u003e\n\n\u003cp\u003eThe Shimano GRX 1x12-speed drivetrain keeps things clean and simple — a single chainring setup with a wide-range 12-speed cassette gives you all the gearing you need for loaded climbs and fast descents, without the complexity of a front derailleur. Shimano GRX hydraulic disc brakes deliver consistent, powerful stopping in all conditions, while tubeless-compatible rims, tyres, and rim tape come ready to run sealant, with tubeless valves supplied — so you can complete the setup straight out of the box. Dropper post compatibility adds further versatility for technical terrain, and the drop bar setup provides multiple hand positions for comfort on longer rides and \u003ca href=\"\/collections\/bike-packing\"\u003ebikepacking\u003c\/a\u003e adventures.\u003c\/p\u003e\n\n\u003cp\u003eThe Croix de Fer 40 sits in the middle of the 2026 \u003ca href=\"\/collections\/genesis\"\u003eGenesis Croix de Fer range\u003c\/a\u003e. For a higher-specification 2x12-speed build, explore the \u003ca href=\"\/products\/genesis-croix-de-fer-50-2026-gravel-bike-with-shimano-grx-2x12-speed-drivetrain-and-hydraulic-brakes\"\u003eCroix de Fer 50 2026\u003c\/a\u003e, or step up to the electric-assisted \u003ca href=\"\/products\/genesis-croix-de-fer-60-e-gravel-bike-2026-with-mahle-x30-electric-assist-system\"\u003eCroix de Fer 60 2026\u003c\/a\u003e. If you'd prefer to build your own spec, the \u003ca href=\"\/products\/genesis-croix-de-fer-725-gravel-frameset-2026-with-dropper-post-compatibility\"\u003eCroix de Fer 725 Frameset 2026\u003c\/a\u003e is available as a frameset-only option.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It's Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eGravel and mixed-terrain riding with generous 700x45c tyre clearance\u003c\/li\u003e\n  \u003cli\u003eLong-distance \u003ca href=\"\/collections\/bike-packing\"\u003ebikepacking\u003c\/a\u003e and adventure riding on a durable steel platform\u003c\/li\u003e\n  \u003cli\u003eClean, simple 1x12-speed drivetrain with wide-range gearing via Shimano GRX\u003c\/li\u003e\n  \u003cli\u003eConfident all-weather braking with Shimano GRX hydraulic disc brakes\u003c\/li\u003e\n  \u003cli\u003eReduced puncture risk with tubeless-compatible rims, tyres, rim tape, and supplied valves\u003c\/li\u003e\n  \u003cli\u003eTechnical descents and varied terrain with dropper post compatibility\u003c\/li\u003e\n  \u003cli\u003eMultiple hand positions and long-ride comfort with a drop bar setup\u003c\/li\u003e\n  \u003cli\u003eUnisex fit across a full size range (X-Small to X-Large)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It's NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-speed road racing or competitive events where an aero carbon frame is required\u003c\/li\u003e\n  \u003cli\u003eRiders who want a 2x drivetrain for finer gear selection — see the \u003ca href=\"\/products\/genesis-croix-de-fer-50-2026-gravel-bike-with-shimano-grx-2x12-speed-drivetrain-and-hydraulic-brakes\"\u003eCroix de Fer 50 2026\u003c\/a\u003e for a 2x12-speed build\u003c\/li\u003e\n  \u003cli\u003eAggressive full-suspension mountain biking on technical singletrack\u003c\/li\u003e\n  \u003cli\u003eRiders prioritising the absolute lightest build — steel frames carry more weight than carbon alternatives\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sizes are available?\u003c\/strong\u003e\u003cbr\u003eThe Croix de Fer 40 2026 is available in X-Small, Small, Medium, Large, and X-Large. We recommend checking the Genesis geometry chart or contacting us for a personalised sizing recommendation based on your riding position and inseam.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the bike tubeless ready out of the box?\u003c\/strong\u003e\u003cbr\u003eYes — the Croix de Fer 40 comes with tubeless-compatible rims, tyres, and rim tape, and tubeless valves are supplied. You will need to add sealant to complete the setup, which we can assist with at point of purchase.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the bike come with a dropper post fitted?\u003c\/strong\u003e\u003cbr\u003eNo — the frame is dropper post compatible but a dropper post is not included as standard. Contact us if you'd like advice on compatible options to add to your build.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy a 1x12-speed drivetrain rather than 2x?\u003c\/strong\u003e\u003cbr\u003eThe 1x12-speed setup offers a wide gear range in a simpler, lighter package with less to go wrong on the trail. It's well suited to gravel and adventure riding where versatility and reliability matter more than the finest possible gear increments. If you prefer a 2x setup, the \u003ca href=\"\/products\/genesis-croix-de-fer-50-2026-gravel-bike-with-shimano-grx-2x12-speed-drivetrain-and-hydraulic-brakes\"\u003eCroix de Fer 50 2026\u003c\/a\u003e runs Shimano GRX 2x12-speed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this bike suitable for all genders?\u003c\/strong\u003e\u003cbr\u003eYes — the Croix de Fer 40 uses a unisex geometry designed to work well for all riders across the available size range.\u003c\/p\u003e","brand":"Genesis","offers":[{"title":"Magenta \/ X-Small","offer_id":46704872652975,"sku":"GN11011XS","price":2499.99,"currency_code":"GBP","in_stock":true},{"title":"Magenta \/ Small","offer_id":46704872685743,"sku":"GN11011SM","price":2499.99,"currency_code":"GBP","in_stock":true},{"title":"Magenta \/ Medium","offer_id":46704872718511,"sku":"GN11011MD","price":2499.99,"currency_code":"GBP","in_stock":true},{"title":"Magenta \/ Large","offer_id":46704872751279,"sku":"GN11011LG","price":2499.99,"currency_code":"GBP","in_stock":true},{"title":"Magenta \/ X-Large","offer_id":46704872784047,"sku":"GN11011XL","price":2499.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/cdf401.jpg?v=1774524407","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/genesis-croix-de-fer-40-gravel-bike-2026","provider":"Swinnerton Cycles","version":"1.0","type":"link"}