/5 mb-0 py-2 pr-1 font-medium border-b-2 md:border-r-2 border-gray-10\"\u003e*Stem\u003c\/dt\u003e\n\u003cdd class=\"flex-none w-full md:w-4\/5 font-normal\"\u003e\n\u003cdiv class=\"p-2 border-b-2 border-gray-10\"\u003e\n\u003cspan\u003eSize:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eXS\u003cbr\u003e\u003c\/span\u003e\u003ca href=\"https:\/\/www.trekbikes.com\/b2b\/gb\/en_GB\/p\/5274582\" class=\"block underline\"\u003eTrek RCS Pro, -7-degree, 80 mm length\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"p-2 border-b-2 border-gray-10\"\u003e\n\u003cspan\u003eSize:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eS, M\u003cbr\u003e\u003c\/span\u003e\u003ca href=\"https:\/\/www.trekbikes.com\/b2b\/gb\/en_GB\/p\/5274583\" class=\"block underline\"\u003eTrek RCS Pro, -7-degree, 90 mm length\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"p-2 border-b-2 border-gray-10\"\u003e\n\u003cspan\u003eSize:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cs pan\u003eML, L\u003cbr\u003e\u003c\/span\u003e\u003ca href=\"https:\/\/www.trekbikes.com\/b2b\/gb\/en_GB\/p\/5274584\" class=\"block underline\"\u003eTrek RCS Pro, -7-degree, 100 mm length\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"p-2 border-b-2 border-gray-10\"\u003e\n\u003cspan\u003eSize:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eXL\u003cbr\u003e\u003c\/span\u003e\u003ca href=\"https:\/\/www.trekbikes.com\/b2b\/gb\/en_GB\/p\/5274585\" class=\"block underline\"\u003eTrek RCS Pro, -7-degree, 110 mm length\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/dd\u003e\n\u003cdt class=\"flex-none w-full md:w-1\/5 mb-0 py-2 pr-1 font-medium border-b-2 md:border-r-2 border-gray-10\"\u003eRotor size\u003c\/dt\u003e\n\u003cdd class=\"flex-none w-full md:w-4\/5 p-2 font-normal border-b-2 border-gray-10\"\u003eMax brake rotor sizes: 180 mm front, 160 mm rear\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp data-v-631a2fc2<
< = LIQUID_CACHE_MAX_AGE) { console.debug(`STOQ - Liquid cache is fresh (${Math.round(liquidCacheAge / 60)} minutes old)`); window._RestockRocketConfig.isLiquidCacheFresh = true; } else { console.debug(`STOQ - Liquid cache is stale (${Math.round(liquidCacheAge / 60)} minutes old, max ${Math.round(LIQUID_CACHE_MAX_A<

  • window._RestockRocketConfig = window._RestockRocketConfig || {} // Helper function to normalize locale format from hyphen to underscore (e.g., 'en-US' -> 'en_us') // This matches the backend's Mobility.normalize_locale behavior // Returns empty string if locale is empty or invalid (matches original behavior) function normalizeLocale(locale) { if (!locale || locale.trim() === '') { return ''; } return locale.toString().toLowerCase().replace(/-/g, '_'); } window._RestockRocketConfig.locale = 'en'; window._RestockRocketConfig.normalizedLocale = normalizeLocale('en'); window._RestockRocketConfig.shop = 'projektride.myshopify.com'; window._RestockRocketConfig.pageType = 'product'; window._RestockRocketConfig.liquidRenderedAt = 1771308822;window._RestockRocketConfig.marketId = 382140642;window._RestockRocketConfig.countryName = 'United Kingdom'; window._RestockRocketConfig.countryIsoCode = 'GB';window._RestockRocketConfig.cartInventoryQuantity = {};window._RestockRocketConfig.cachedSettings = {"id":38500,"shop_id":38436,"currency":"GBP","created_at":"2025-07-26T09:13:57.337Z","updated_at":"2025-12-28T14:44:23.508Z","enable_app":true,"enable_signup_widget":false,"storefront_button_text":"Notify me when available","storefront_button_text_color":"#FFFFFF","storefront_button_background_color":"#202223","storefront_form_header":"Notify me","storefront_form_description":"Get a notification as soon as this product is back in stock by signing up below!","storefront_form_button_text":"Notify me when available","storefront_form_button_text_color":"#FFFFFF","storefront_form_button_background_color":"#202223","storefront_form_terms":"Promise we won't spam. You'll only receive notifications for this product.","storefront_form_error":"Please enter a valid email address","storefront_form_success":"Thank you! We will notify you when the product is available.","enable_powered_by":true,"show_button_on_preorder":true,"sms_enabled":false,"email_ena bled":true,"storefront_button_disable_tag":"rocket-hide","theme_config":{"disableDebugLoggingForNonPreorderItem":false},"storefront_form_email_placeholder":"Email address","storefront_form_phone_placeholder":"SMS","storefront_form_phone_label":"Phone number","storefront_form_email_label":"Email","storefront_form_phone_error":"Please enter a valid phone number","storefront_form_customer_name_placeholder":"Name","storefront_form_customer_name_error":"Please enter your name","storefront_form_did_you_mean_error":"Did you mean %{suggested_email}? Or use %{current_email}","form_customer_name_enabled":false,"form_customer_name_required":false,"css_config":"","js_config":null,"collect_promotion_consent":false,"storefront_form_promotion_consent_label":"Notify me about other news, sales, discounts & offers too","show_button_on_collection":false,"sms_default_country":"us","sms_allowed_countries":[],"sms_restrict_country":false,"sms_default_channel":true,"optin_required":false,"optin_success_text":"Registration confirmed= LIQUID_CACHE_MAX_AGE) { console.debug(`STOQ - Liquid cache is fresh (${Math.round(liquidCacheAge / 60)} minutes old)`); window._RestockRocketConfig.isLiquidCacheFresh = true; } else { console.debug(`STOQ - Liquid cache is stale (${Math.round(liquidCacheAge / 60)} minutes old, max ${Math.round(LIQUID_CACHE_MAX_AGE / 60)} minutes)`); window._RestockRocketConfig.isLiquidCacheFresh = false; } } function checkSettingsExpiry(settings) { try { if (!settings || !settings.updated_at) { console.debug('STOQ - Invalid settings data structure'); return null; } if (!settings.cache) { console.debug('STOQ - settings caching disabled'); return null; } // Check if translations are enabled but missing from cache // This handles the backfill period where DB has translations but metafield doesn't if (settings.multi_language_enabled) { if (!settings.translations) { // Translations enabled but no translation data in metafield // Metafield hasn't been backfilled yet - force refresh console.debug('STOQ - multi-language enabled but no translation data in cache, fetching fresh'); return null; } // Translations object exists in metafield - cache is valid // If current locale isn't translated, applyTranslations will gracefully use default locale from base fields if (window._RestockRocketConfig.normalizedLocale && !Object.prototype.hasOwnProperty.call(settings.translations, window._RestockRocketConfig.normalizedLocale)) { console.debug('STOQ - locale not explicitly translated, will use default language from cache'); } // Don't return null - continue using cache even for untranslated locales } const updatedAt = new Date(settings.updated_at); if (isNaN(updatedAt.getTime())) { console.debug('STOQ - Invalid updated_at date format in settings'); return null; } const
    • age = Date.now() - updatedAt.getTime(); if (age < SETTINGS_CACHE_DURATION) { console.debug('STOQ - settings changed recently, skipping cache'); return null; } return settings; } catch (error) { console.debug('STOQ - Error checking settings cache:', error); return null; } } function createRestockRocketContainer() { const restockRocketContainer = document.createElement('div'); restockRocketContainer.id = 'restock-rocket'; document.body.appendChild(restockRocketContainer); } function createRestockRocketScript(scriptUrl) { const restockRocketScriptElement = document.createElement('script'); restockRocketScriptElement.setAttribute('defer', 'defer'); restockRocketScriptElement.src = scriptUrl; document.body.appendChild(restockRocketScriptElement); } createRestockRocketContainer() console.debug('STOQ - extension activated') function applyTranslations(settings) { try { // Skip translation logic entirely if multi-language is not enabled if (!settings || !settings.multi_language_enabled) { return settings; } if (!settings.translations) { console.debug('STOQ - No translations found, skipping translation'); return settings; } const normalizedLocale = window._RestockRocketConfig.normalizedLocale; const translations = settings.translations; if (!normalizedLocale) { // No matching locale has translations; drop payload to save memory console.debug('STOQ - No matching locale for translations. Available:', Object.keys(translations || {})); delete settings.translations; return settings; } console.debug(`STOQ - Applying translations for normalized locale: ${normalizedLocale} (original: ${window._RestockRocketConfig.locale})`); const translatedFields = translations[normalizedLocale]; if (translatedFields && typeof translatedFields === 'object') { Object.keys(translatedFields).forEach(function(key) { const value = translatedFields[key]; if (value !== null && value !== undefined && value !== '') { settings[key] = value; } }); } else { console.debug('STOQ - N o translated fields found for locale:', normalizedLocale); } delete settings.translations; return settings; } catch (e) { console.debug('STOQ - error applying translations:', e); return settings; } } // Setup event listener for cart selling plan updates // This must be called before any scripts are loaded to avoid race conditions function setupCartSellingPlanUpdater(settings) { if (!settings || !settings.preorder_enabled) { return; } // Listen for stoq:preorder-api-ready event dispatched by preorder.js window.addEventListener('stoq:preorder-api-ready', function(event) { console.debug('STOQ - Preorder API ready, updating cart selling plans'); if (window._RestockRocket && window._RestockRocket.updateCartSellingPlans) { window._RestockRocket.updateCartSellingPlans() .then(hasUpdates => { if (hasUpdates) { console.debug('STOQ - cart selling plans updated successfully'); } else
    { console.debug('STOQ - no cart selling plan updates needed'); } }) .catch(error => { console.error('STOQ - error updating cart selling plans:', error); }); } }); } // First try to get settings from metafields with expiry check const cachedSettings = window._RestockRocketConfig.cachedSettings; const validCachedSettings = cachedSettings ? checkSettingsExpiry(cachedSettings) : null; if (validCachedSettings) { console.debug('STOQ - using cached settings'); initializeScripts(validCachedSettings); } else { console.debug('STOQ - fetching fresh settings'); const headers = { 'X-Shopify-Shop-Domain': window._RestockRocketConfig.shop || window.Shopify.shop, 'ngrok-skip-browser-warning': 'skip' }; if (window.Shopify?.theme?.role === 'main') { headers['X-Shopify-Theme-Schema-Name'] = window.Shopify.theme.schema_name; headers['X-Shopify-Theme-Schema-Version'] = window.Shopify.theme. schema_version; headers['X-Shopify-Theme-Store-Id'] = window.Shopify.theme.theme_store_id; } fetch( `${window._RestockRocketConfig.host}/api/v1/setting.json?translation_locale=${window._RestockRocketConfig.normalizedLocale}`, { headers } ) .then(function(response) { if (!response.ok) { throw new Error('Network response was not ok'); } return response.json(); }) .then(function(settings) { initializeScripts(settings); }) .catch(function(error) { // If request failed and we have cached settings (even if expired), use them as fallback if (cachedSettings) { console.debug('STOQ - using expired cached settings as fallback'); initializeScripts(cachedSettings); } else { console.error('STOQ - failed to load settings:', error); } }) .catch(function(e) { console.error(e) }) } function initializeScripts(settings) { settings = applyTranslations(settings); window._RestockRocketConfig.settings = settings; console.debug(`STOQ - settings configured for ${window._RestockRocketConfig.pageType}`); // Setup cart selling plan updater BEFORE loading any scripts to avoid race conditions setupCartSellingPlanUpdater(settings); if(settings.enable_app) { const hijackIntegration = window._RestockRocketConfig.integrations.find(function(integration) { return integration.type === 'hijack' && integration.enabled && integration.page_types.includes(window._RestockRocketConfig.pageType); }) if(window._RestockRocketConfig.pageType === 'collection' && (settings.show_button_on_collection || settings.preorder_collection_enabled)) { createRestockRocketScript(window._RestockRocketConfig.scriptUrlCollection); } else if(window._RestockRocketConfig.pageType === 'index' && (settings.show_button_on_index || settings.preorder_index_enabled)) { createRestockRocketScript(window._RestockRocketConfig.scriptUrlCollection); } else if(wi ndow._RestockRocketConfig.pageType === 'search' && (settings.show_button_on_search || settings.preorder_search_enabled)) { createRestockRocketScript(window._RestockRocketConfig.scriptUrlCollection); } else if(window._RestockRocketConfig.pageType === 'page' && (settings.show_button_on_page || settings.preorder_page_enabled)) { createRestockRocketScript(window._RestockRocketConfig.scriptUrlCollection); } else if(window._RestockRocketConfig.pageType === 'product') { createRestockRocketScript(window._RestockRocketConfig.scriptUrlProduct); } else if(hijackIntegration) { createRestockRocketScript(window._RestockRocketConfig.scriptUrlCollection); } else { console.debug(`STOQ - no scripts enabled for ${window._RestockRocketConfig.pageType}`); } // Dispatch custom event when app is loaded // Cart selling plan updates will be triggered by stoq:preorder-api-ready event const appLoadedEvent = new CustomEvent('stoq:loaded', {
    restock-rocket-preorder-countdown-timer .countdown-units{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}.restock-rocket-preorder-countdown-timer .countdown-unit{display:flex;flex-direction:column;align-items:center;gap:6px}.restock-rocket-preorder-countdown-timer .countdown-box{min-width:40px;padding:10px 6px;text-align:center;font-size:20px;line-height:1}.restock-rocket-preorder-countdown-timer .countdown-label{font-size:14px;font-weight:500;text-align:center;text-transform:capitalize;opacity:.7}@media (max-width:768px){.restock-rocket-preorder-countdown-timer{padding:14px}.restock-rocket-preorder-countdown-timer .countdown-box{min-width:55px;padding:14px 10px;font-size:26px}.restock-rocket-preorder-countdown-timer .countdown-label{font-size:11px}}@media (max-width:480px){.restock-rocket-preorder-countdown-timer{padding:12px}.restock-rocket-preorder-countdown-timer .countdown-units{width:100%;gap:10px}.restock-rocket-preorder-countdown-timer .countdown-box{width:100%;min-width:50px;padding:12px 8px;font-size:24px}.restock-rocket-preorder-countdown-timer .countdown-label{font-size:10px}}.restock-rocket-toast{position:fixed;cursor:pointer;background:#fff;border:0;min-width:40px;min-height:40px;box-shadow:0 0 15px rgba(0,0,0,.1)!important;z-index:622004;padding:20px 30px;font-family:inherit;font-size:inherit;color:#000;display:flex;justify-content:center;align-items:center}.restock-rocket-toast a{text-decoration:none;font-weight:700;color:#000}.restock-rocket-toast .dismiss{margin-left:15px;z-index:1;font-size:20px;}.restock-rocket-toast-top{top:60px}.restock-rocket-toast-bottom{bottom:75px}.restock-rocket-toast-left,.restock-rocket-toast-right{-webkit-animation:.5s forwards slide;animation:.5s forwards slide}.restock-rocket-toast-left{left:0;transform:translateX(-100%);-webkit-transform:translateX(-100%);border-radius:0 10px 10px 0}.restock-rocket-toast-left.slide-out{-webkit-animation:.5s forwards slide-out-left;animation:.5s forwards slide-out-left}.restock-rocket-toast-right{right:0;transform:translateX(100%);-webkit-transform:translateX(100%);border-radius:10px 0 0 10px}.restock-rocket-toast-right.slide-out{-webkit-animation:.5s forwards slide-out-right;animation:.5s forwards slide-out-right}@keyframes slide{100%{transform:translateX(0)}}@-webkit-keyframes slide{100%{-webkit-transform:translateX(0)}}@keyframes slide-out-left{0%{transform:translateX(0)}100%{transform:translateX(-100%)}}@-webkit-keyframes slide-out-left{0%{-webkit-transform:translateX(0)}100%{-webkit-transform:translateX(-100%)}}@keyframes slide-out-right{0%{transform:translateX(0)}100%{transform:translateX(100%)}}@-webkit-keyframes slide-out-right{0%{-webkit-transform:translateX(0)}100%{-webkit-transform:translateX(100%)}}.restock-rocket-preorder-progress-bar{padding:12px 15px;margin-bottom:20px;font-family:inherit;}.restock-rocket-preorder-progress-bar .preorder-progress-text{margin-bottom:8px;}.restock-rocket-preorder-progress-bar .preorder-progress-bar-row{display:flex;align-items:center;gap:10px;}.restock-rocket-preorder-progress-b ar .preorder-progress-track{flex:1;height:12px;overflow:hidden;}.restock-rocket-preorder-progress-bar .preorder-progress-fill{display:block;height:100%;min-width:2px;transition:width 0.3s ease;}.restock-rocket-preorder-progress-bar .preorder-progress-percentage{font-weight:500;min-width:35px;text-align:right;}
    Header Image
    Trek FX Sport SL 4
    Trek FX Sport SL 4
    Trek FX Sport SL 4

    Trek FX Sport SL 4

    £1,500.00

       

    SKU: 5323707

    Product Details

    FX Sport SL 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.

    *Please note – spec applies to all sizes unless listed separately

    Frame
    Alpha Gold Aluminium, internal cable routing, rack & mudguard mounts, post mount disc, kickstand mount, 135x5 mm QR
    Fork
    FX carbon, flat-mount disc, rack mounts, 410mm axle-to-crown, ThruSkew 5mm QR

    Hub front
    Formula DC-20, alloy, 6-bolt, 100x5 mm
    Skewer front
    139x5 mm bolt-on
    Hub rear
    Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm
    Skewer rear
    152x5 mm QR
    Rim
    Bontrager Tubeless Ready Disc, 32-hole, Presta valve
    Tyre
    Bontrager H2 Comp, wire bead, 30 tpi, 700x35 mm

    Shifter
    Shimano CUES U6000 w/optical gear display, 10-speed
    Rear derailleur
    Shimano CUES U6000 GS
    *Crank
    Size: XS, S, M
    Prowheel alloy, 40T narrow-wide ring, 170 mm length
    Size: L, XL
    Prowheel alloy, 40T narrow-wide ring, 175 mm length
    Cassette
    Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed
    Chain
    Shimano LG500
    Pedal
    Bontrager City pedals

    Saddle
    Bontrager H1
    *Seatpost
    Size: XS, S, M
    Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length
    Size: L, XL
    Bontrager alloy, 27.2 mm, 12 mm offset, 400 mm length
    *Handlebar
    Size: XS, S, M
    Bontrager Comp Lowriser, alloy, 31.8 mm, 15 mm rise, 600 mm width
    Size: L, XL
    Bontrager Comp Lowriser, alloy, 31.8 mm, 15 mm rise, 660 mm width
    Grips
    Trek Line Ergonomic Pro, lock-on
    *Stem
    Size: XS, S
    Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 90 mm length
    Size: M, L, XL
    Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 100 mm length
    Brake
    Shimano hydraulic disc, MT201 lever, UR300 calliper
    Brake rotor
    Shimano RT26, 6-bolt, 160 mm

    Weight
    M - 11.65 kg / 25.69 lbs
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).

    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.

    Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.

    Would you like to add on any equipment?

    Hire Lazer Compact Helmet £0.00
    Black
    Hire Ortlieb 40L Pannier Bags £0.00
    Life Systems Pocket First Aid Kit - HIRE £0.00
    Hire Kryptolok Standard U-Lock & 4 foot Kryptoflex cable £0.00

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    FAQ

    Questions and answers