Custom Builds for sale img src="//projektride.co.uk/cdn/shop/files/FXSport4Carbon_22_35785_A_Alt1_2048x2048.webp?v=1724233676" alt="Trek FX Sport 4" class="mfp-zoom-in-cur" id="34487839817954">

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. The prices shown are the manufacturer's suggested retail prices.Custom Build Inspiration

All measurements provided in cm unless otherwise stated.

    img src="//projektride.co.uk/cdn/shop/files/FXSport4Carbon_22_35785_A_Alt4_2048x2048.webp?v=1724233687" alt="Trek FX Sport 4" class="mfp-zoom-in-cur" id="34487840571618"> Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.        img src="//projektride.co.uk/cdn/shop/files/FXSport4Carbon_22_35785_A_Alt5_2048x2048.webp?v=1724233698" alt="Trek FX Sport 4" class="mfp-zoom-in-cur" id="34487841685730"> img src="//projektride.co.uk/cdn/shop/files/FXSport4Carbon_22_35785_A_Primary_98x.webp?v=1724233661" alt="" class="product-single__thumbnail-img"> Workshop Prices tent-y5f4go\" class=\"\" aria-expanded=\"true\" qaid=\"\"\u003e\n\u003cdiv data-v-5bd42f3c=\"\" class=\"flex items-center flex-grow\"\u003eFrameset\u003c\/div\u003e\n\u003cbutton data-v-5bd42f3c=\"\" id=\"pdl-collapse-head-y5f4go\" type=\"button\" class=\"pdl-collapse-item__header is-active flex-row-reverse items-center\" tabindex=\"0\"\u003e\u003csvg data-v-1e7396ba=\"\" data-v-5bd42f3c=\"\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\" width=\"24px\" height=\"24px\" fill=\"currentcolor\" aria-hidden=\"true\" role=\"presentation\" class=\"pdl-collapse-item__icon pdl-icon pdl-icon--size-24 is-active\" qaid=\"\"\u003e\u003cpath d=\"M0 0h24v24H0z\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 8l-6 6 1.41 1.41L12 10.83l4.59 4.58L18 14z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\n\u003c\/div\u003e\n\u003cdiv data-v-5bd42f3c=\"\" id=\"pdl-collapse-content-y5f4go\" role=\"tabpanel\" aria-labelledby=\"pdl-collapse-head-y5f4go\" class=\"pdl-collapse-item__wrap\" data-ol 003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eM\u003cbr data-v-05762449=\"\"\u003e\u003ca data-v-05762449=\"\" href=\"https:\/\/www.trekbikes.com\/gb\/en_GB\/p\/W571998\"\u003eProWheel alloy, 170 mm length\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-v-05762449=\"\"\u003e\n\u003ctd data-v-05762449=\"\"\u003e\n\u003cspan data-v-05762449=\"\"\u003eSize:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eL, XL\u003cbr data-v-05762449=\"\"\u003e\u003ca data-v-05762449=\"\" href=\"https:\/\/www.trekbikes.com\/gb\/en_GB\/p\/W571999\"\u003eProWheel alloy, 175 mm length\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-v-05762449=\"\"\u003e\n\u003cth data-v-05762449=\"\" rowspan=\"1\" scope=\"row\"\u003eChainring\u003c\/th\u003e\n\u003ctd data-v-05762449=\"\"\u003e\u003ca data-v-05762449=\"\" href=\"https:\/\/www.trekbikes.com\/gb\/en_GB\/p\/W589898\"\u003eProWheel 40T narrow\/wide steel, w\/alloy guard\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-v-0576 Complete Brakes1 Brake Pads FAQ Questions and answer Brake SparesDecrease quantity Increase quantityRear SuspensionTubesSaddlesPedals E-bike Batteries and chargers Frame 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, mudguard mounts, flat mount disc, 135x5 mm ThruSkew Fork Carbon, hidden mudguard moun LocksBike Packing Tel 0131 374 5324Phone Holders Location82 Newington RoadEH9 1QNEmail[email protected]© 2025, ProjektRide. Website by Clothing and Protection.ProjektRide Merchandise American Express GlovesDiners Club Discover SocksGoogle PaySell Your Bike Union PayOpen search barVisa My AccountOpen cartOpen search bar

Sizing table Services  

Frame size letter	Wheel size Bike Hire	A —   WorkshopSeat tube	img src="//projektride.co.uk/cdn/shop/files/FXSport4Carbon_22_35785_A_Alt1_98x.webp?v=1724233676" alt="" class="product-single__thumbnail-img"> B —   Book a ServiceSeat tube angle {"id":8678807208162,"title":"Trek Allant+ 6","handle":"trek-allant-6","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eThe Allant+ 6 is a deluxe city electric bike for soaring through commutes and exploring down gravel paths. It's equipped with the Bosch smart system that offers more connectivity than ever before. Pair your smartphone with your bike to log activities, plan routes and more. Available with your choice of battery size, ranging from 400 to 800-watt hours, so you can cruise comfortably all the way home. Plus, it's topped off with upgraded components where it matters most\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cmain\u003e\n\u003csection data-v-4f392050=\"\" data-pdp-container=\"\" class=\"\"\u003e\n\u003cdiv data-v-05762449=\"\" data-v-4f392050=\"\" class=\"grid-container mb-2 lg:mb-0\"	data-v-5bd42f3c=\"\" data-v-05762449=\"\" id=\"pdl-collapse-item-vybsfx\" name=\"252\" class=\"pdl-collapse-item is-active\"\u003e\n\u003cdiv data-v-5bd42f3c=\"\" role=\"tab\" aria-controls=\"pdl-collapse-content-vybsfx\" aria-describedby=\"pdl-collapse-content-vybsfx\" class=\"\" aria-expanded=\"true\" qaid=\"\"\u003e\n\u003cdiv data-v-5bd42f3c=\"\" class=\"flex items-center flex-grow\"\u003eWheels\u003c\/div\u003e\n\u003cbutton data-v-5bd42f3c=\"\" id=\"pdl-collapse-head-vybsfx\" type=\"button\" class=\"pdl-collapse-item__header is-active flex-row-reverse items-center\" tabindex=\"0\"\u003e\u003csvg data-v-1e7396ba=\"\" data-v-5bd42f3c=\"\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\" width=\"24px\" height=\"24px\" fill=\"currentcolor\" aria-hidden=\"true\" role=\"presentation\" class=\"pdl-collapse-item__icon pdl-icon pdl-icon--size-24 is-active\" qaid=\"\"\u003e\u003cpath d=\"M0 0h24v24H0z\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 8l-6 6 1.41 1.41L12 10.83l4.59 4.58L18 1Track Your ServiceC —img src="//projektride.co.uk/cdn/shop/files/FXSport4Carbon_22_35785_A_Alt4_98x.webp?v=1724233687" alt="" class="product-single__thumbnail-img"> r\u003e\n\u003ctr data-v-05762449=\"\"\u003e\n\u003cth data-v-05762449=\"\" rowspan=\"1\" scope=\"row\"\u003eSkewer rear\u003c\/th\u003e\n\u003ctd data-v-05762449=\"\"\u003e\u003ca data-v-05762449=\"\" href=\"https:\/\/www.trekbikes.com\/gb\/en_GB\/p\/437938\"\u003e148x5 mm bolt-on\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-v-05762449=\"\"\u003e\n\u003cth data-v-05762449=\"\" rowspan=\"1\" scope=\"row\"\u003eRim\u003c\/th\u003e\n\u003ctd data-v-05762449=\"\"\u003e\u003ca data-v-05762449=\"\" href=\"https:\/\/www.trekbikes.com\/gb\/en_GB\/p\/581062\"\u003eBontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23 mm width, Presta valve\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-v-05762449=\"\"\u003e\n\u003cth data-v-05762449=\"\" rowspan=\"1\" scope=\"row\"\u003eTyre\u003c\/th\u003e\n\u003ctd data-v-05762449=\"\"\u003eSchwalbe G-One, Performance, RaceGuard, with reflective strip, 57-584\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\   3e\u003cpath d=\"M12 8l-6 6 1.41 1.41L12 10.83l4.59 4.58L18 14z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\n\u003c\/div\u003e\n\u003cdiv data-v-5bd42f3c=\"\" id=\"pdl-collapse-content-k2547z\" role=\"tabpanel\" aria-labelledby=\"pdl-collapse-head-k2547z\" class=\"pdl-collapse-item__wrap\" data-old-padding-top=\"\" data-old-padding-bottom=\"\" data-old-overflow=\"\"\u003e\n\u003cdiv data-v-5bd42f3c=\"\" class=\"pdl-collapse-item__content\"\u003e\n\u003ctable data-v-05762449=\"\" aria-label=\"Specifications\" class=\"sprocket__table spec\"\u003e\n\u003ctbody data-v-05762449=\"\"\u003e\n\u003ctr data-v-05762449=\"\"\u003e\n\u003cth data-v-05762449=\"\" rowspan=\"1\" scope=\"row\"\u003eCharger\u003c\/th\u003e\n\u003ctd data-v-05762449=\"\"\u003eBosch standard 4A, 230V, smart system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-v-05762449=\"\"\u003e\n\u003cth data-v-05762449=\"\" rowspan=\"2\" scope=\"row\"\u003e*Computer\u003c\/th\u003e\n\u003ctd data-v-05762449=\"\"\u003e\n\u003cspan data- Head tube length se-content-2x1qo\" aria-describedby=\"pdl-collapse-content-2x1qo\" class=\"\" aria-expanded=\"true\" qaid=\"\"\u003e\n\u003cdiv data-v-5bd42f3c=\"\" class=\"flex items-center flex-grow\"\u003eDrivetrain\u003c\/div\u003e\n\u003cbutton data-v-5bd42f3c=\"\" id=\"pdl-collapse-head-2x1qo\" type=\"button\" class=\"pdl-collapse-item__header is-active flex-row-reverse items-center\" tabindex=\"0\"\u003e\u003csvg data-v-1e7396ba=\"\" data-v-5bd42f3c=\"\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\" width=\"24px\" height=\"24px\" fill=\"currentcolor\" aria-hidden=\"true\" role=\"presentation\" class=\"pdl-collapse-item__icon pdl-icon pdl-icon--size-24 is-active\" qaid=\"\"\u003e\u003cpath d=\"M0 0h24v24H0z\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 8l-6 6 1.41 1.41L12 10.83l4.59 4.58L18 14z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\n\u003c\/div\u003e\n\u003cdiv data-v-5bd42f3c=\"\" id=\"pdl-collapse-content-2x1qo\" role=\"tabpanel\" aria-labelledby=\"pdl-collapse-he	pdl-collapse-content-pddjhg\" class=\"\" aria-expanded=\"true\" qaid=\"\"\u003e\n\u003cdiv data-v-5bd42f3c=\"\" class=\"flex items-center flex-grow\"\u003eComponents\u003c\/div\u003e\n\u003cbutton data-v-5bd42f3c=\"\" id=\"pdl-collapse-head-pddjhg\" type=\"button\" class=\"pdl-collapse-item__header is-active flex-row-reverse items-center\" tabindex=\"0\"\u003e\u003csvg data-v-1e7396ba=\"\" data-v-5bd42f3c=\"\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\" width=\"24px\" height=\"24px\" fill=\"currentcolor\" aria-hidden=\"true\" role=\"presentation\" class=\"pdl-collapse-item__icon pdl-icon pdl-icon--size-24 is-active\" qaid=\"\"\u003e\u003cpath d=\"M0 0h24v24H0z\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 8l-6 6 1.41 1.41L12 10.83l4.59 4.58L18 14z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\n\u003c\/div\u003e\n\u003cdiv data-v-5bd42f3c=\"\" id=\"pdl-collapse-content-pddjhg\" role=\"tabpanel\" aria-labelledby=\"pdl-collapse-head-pddjhg\" class=\"pdl-collapse-itOther D —u003ctr data-v-05762449=\"\"\u003e\n\u003ctd data-v-05762449=\"\"\u003e\n\u003cspan data-v-05762449=\"\"\u003eSize:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eL, XL\u003cbr data-v-05762449=\"\"\u003eBontrager alloy, 31.6 mm, 12 mm offset, 400 mm length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-v-05762449=\"\"\u003e\n\u003cth data-v-05762449=\"\" rowspan=\"1\" scope=\"row\"\u003eHandlebar\u003c\/th\u003e\n\u003ctd data-v-05762449=\"\"\u003e\u003ca data-v-05762449=\"\" href=\"https:\/\/www.trekbikes.com\/gb\/en_GB\/p\/W567508\"\u003eAlloy lowriser, 31.8 mm, 25 mm rise, 11-degree backsweep, 690 mm width\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-v-05762449=\"\"\u003e\n\u003cth data-v-05762449=\"\" rowspan=\"1\" scope=\"row\"\u003eGrips\u003c\/th\u003e\n\u003ctd data-v-05762449=\"\"\u003e\u003ca data-v-05762449=\"\" href=\"https:\/\/www.trekbikes.com\/gb\/en_GB\/p\/5277811\"\u003eBontrager XR Endurance Elite\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-v-05 <									> Quantity: Frame reach	N —ProjektRide  Buy Sell Ride ConfidentBrake Rotors Frame stack 1+
		Forks	Front Suspension				Finishing Kit	Tyres			Tubeless			Seat Posts & Clamps
SFX Sport 4 is a carbon fibre fitness bike for riders who want the speed of a lightweight road bike with the comfort and control of a flat handlebar. The 1x drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides.	Gears & Drivetrain	*Please note – spec applies to all sizes unless listed separatelyComponents		Frameset		Wheels	Complete Wheels			Essentials			Accessories	Bottles and Cages
Mudguards							Edinburgh
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