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try { var _sqCfg = window._RestockRocketConfig; var _sqPlanEnabled = Array.isArray(_sqCfg.sellingPlans) && _sqCfg.sellingPlans.some(function (p) { return p && p.enabled; }); var _sqPreCount = ((_sqCfg.cachedPreorderVariantIds && _sqCfg.cachedPreorderVariantIds.preorder_variant_ids) || []).length; _sqCfg.preordersConfigured = !!(_sqPlanEnabled && _sqPreCount); } catch (e) { /* fail open */ } // STOQ-1612: block (not hide) Buy Now / Shop Pay until our JS runs, so a tap in the // load window can't bypass preorder. pointer-events via .stoq-buy-now-pending (no // reflow); timeout releases; renderPreorderButton / featured_product.js lift it. // Gated by the `block_accelerated_checkout` toggle (default OFF) for gradual rollout. // Armed ONLY when we're sure preorder is in play — product page: THIS product has a // preorder variant (never block a plain product's Shop Pay); featured: integration // enabled for this page type. Rationale: PR #2784. try { var _sqc = w indow._RestockRocketConfig; var _sqOn = !!(_sqc.cachedSettings && _sqc.cachedSettings.block_accelerated_checkout); var _sqPre = (_sqc.cachedPreorderVariantIds && _sqc.cachedPreorderVariantIds.preorder_variant_ids) || []; var _sqArm = false; if (_sqOn && _sqc.preordersConfigured) { if (_sqc.pageType === 'product' && _sqc.product && _sqc.product.variants) { _sqArm = _sqc.product.variants.some(function (v) { return _sqPre.indexOf(Number(v.id)) !== -1; }); } else { _sqArm = (_sqc.integrations || []).some(function (i) { return i && i.type === 'featured_product' && i.enabled && Array.isArray(i.page_types) && i.page_types.indexOf(_sqc.pageType) !== -1; }); } } if (_sqArm && document.documentElement) { _sqc.acceleratedGateArmed = true; document.documentElement.classList.add('stoq-buy-now-pending'); setTimeout(function () { document.documentElement.classList.remove('stoq-buy-now-pending'); }, 6< uuid>/che age if (!liquidRenderedAt || typeof liquidRenderedAt !== 'number' || isNaN(liquidRenderedAt)) { console.debug('STOQ - Invalid or missing liquidRenderedAt timestamp, assuming fresh'); window._RestockRocketConfig.isLiquidCacheFresh = true; window._RestockRocketConfig.liquidCacheAge = null; } else { const now = Math.floor(Date.now() / 1000); // Current time in seconds const liquidCacheAge = now - liquidRenderedAt; // Age in seconds // Surfaced into funnel events: a stale cache means the app rendered with // outdated inventory/selling-plan data — a real "had the opportunity but // failed" cause. Negative (client clock ahead) clamps to 0. window._RestockRocketConfig.liquidCacheAge = Math.max(0, liquidCacheAge); // Handle client clock ahead of server if (liquidCacheAge < 0) { console.debug(`STOQ - Client clock appears ahead of server by ${Math.abs(Math.round(liquidCacheAge / 60))} minutes, assuming cache fresh`); window._RestockRocketConfig.isLiquidCacheFresh = true; } else if (liquidCacheAge < 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') // Fire stoq_initialized once per page load so the funnel pipeline has a definitive // "our code ran on this page" signal independent of any cus tomer interaction. // Detected variants: the variants present in this page's Liquid context (product page has them; // collection/index/etc. don't expose variants from Liquid). Used to disambiguate "embed didn't // load" vs "embed loaded but the variant wasn't a preorder/BIS candidate" in order debug. try { const _stoqInitConfig = window._RestockRocketConfig; const _stoqDetectedVariantIds = (_stoqInitConfig.product && Array.isArray(_stoqInitConfig.product.variants)) ? _stoqInitConfig.product.variants.map(function(v) { return v.id }) : []; const _stoqSelectedVariantId = _stoqInitConfig.selected_variant_id; // Per-session page-load counter, incremented here in the INLINE code so it exists // even when the deferred bundle never runs. Paired with stoq_bundle_ready's // page_load_seq, it tells order-debug which page load an add fired on (and whether // the bundle had loaded on that load). var _stoqPageSeq = 0; try { _stoqPageSeq = (parseInt(window.sessionStorage.getItem('_stoq_pls') || '0', 10) || 0) + 1; window.sessionStorage.setItem('_stoq_pls', String(_stoqPageSeq)); } catch (e) { /* sessionStorage unavailable (private mode) — leave 0 */ } Shopify?.analytics?.publish?.('stoq_initialized', { cart_token: _stoqInitConfig.cartToken || '', page_url: window.location.href, page_type: _stoqInitConfig.pageType || '', shop_domain: _stoqInitConfig.shop || '', market_id: _stoqInitConfig.marketId || '', // Buyer's storefront country (localization.country.iso_code). Seeds the // pixel's extension_details blob so it rides forward onto Shopify's native // events too — a market can span countries, so this is the finer signal. country_code: _stoqInitConfig.countryIsoCode || '', detected_variant_ids: _stoqDetectedVariantIds, selected_variant_id: _stoqSelectedVariantId || '', page_load_seq: _stoqPageSeq, liquid_rendered_at: _stoqInitConfig.liquidRenderedAt || 0, app_version : _stoqInitConfig.appVersion || '', liquid_cache_age: _stoqInitConfig.liquidCacheAge, // Selected variant's stock posture as our app saw it at render — explains // whether we *should* have treated it as a preorder candidate. inventory_policy: (_stoqInitConfig.variantsInventoryPolicy || {})[_stoqSelectedVariantId] || '', inventory_quantity: (_stoqInitConfig.variantsInventoryQuantity || {})[_stoqSelectedVariantId], }); } catch (e) { console.debug('STOQ - stoq_initialized publish failed:', e); } // STOQ-1595: publish stoq_accelerated_checkout_clicked for every accelerated-checkout // click (Buy Now / dynamic checkout / Shop Pay installments) on ALL surfaces, before our // bundle loads, via one delegated capture-phase listener (catches late-rendered buttons). // Only on shops with preorders configured (shared `preordersConfigured` signal from the // derivation block above) — nothing to bypass otherwise. variant_id is read per-clicked-button // from its form so it's correct on collection/index/search too. block_accelerated_checkout // context (STOQ-1612) rides in `properties` (forwarded verbatim by the pixel, no schema // change): a buy_now click on a preorder variant while the gate was armed is a visible // bypass signal for order debug. Also sends page_url (top-level, like the pixel's native // events) and two preorder signals in properties (see below). try { var _sqTrack = window._RestockRocketConfig; if (_sqTrack.preordersConfigured) { document.addEventListener('click', function (e) { try { var t = e.target; if (!t || !t.closest) return; var host = t.closest('.shopify-payment-button, shopify-payment-terms'); if (!host) return; var channel = host.matches && host.matches('shopify-payment-terms') ? 'shop_pay_installments' : 'buy_now'; var form = host.closest('form'); var vidEl = form && form.querySelector('[name="id"]'); var variantId = (vidEl && vidEl.value) || _sqTrack.selected_variant_id || ''; // The enabled STOQ selling plan the clicked variant belongs to (if any), found once and // reused for in_enabled_plan / enrolled_plan_id / enrolled_plan_provider below. var _sqVidNum = Number(variantId); var _sqPlan = null; // Array.isArray guard (not `|| []`) so a truthy non-array sellingPlans can't throw and // silently drop the whole publish. var _sqPlans = Array.isArray(_sqTrack.sellingPlans) ? _sqTrack.sellingPlans : []; _sqPlans.forEach(function (pl) { if (!_sqPlan && pl && pl.enabled && Array.isArray(pl.variant_ids) && pl.variant_ids.indexOf(_sqVidNum) !== -1) { _sqPlan = pl; } }); Shopify?.analytics?.publish?.('stoq_accelerated_checkout_clicked', { variant_id: variantId, product_id: (_sqTrack.product && _sqTrack.product.id) || '', channel: channel, market_id: _sqTrac
k.marketId || '', country_code: _sqTrack.countryIsoCode || '', page_type: _sqTrack.pageType || '', cart_token: _sqTrack.cartToken || '', page_url: (window.location && window.location.href) || '', properties: { // Mirror the bundle's own preorder check (preorder.js checkInventoryProvider- // WithCachedFallback): the live set config.preorderVariantIds (refreshed after // page load by loadVariantInventoryData) OR the Liquid-injected // cachedPreorderVariantIds — always present, so it covers clicks before the // bundle loads (why this tracker is inline). ORing both (not preferring one) // matches the bundle and is correct even if the live set is an empty array. Both // hold integer ids; the click-time id comes off a DOM input (.value → string) or // selected_variant_id, so coerce with Number for a like-typed compare. is_preord er_variant: (function () { var vid = Number(variantId); var has = function (a) { return Array.isArray(a) && a.indexOf(vid) !== -1; }; return has(_sqTrack.preorderVariantIds) || has(_sqTrack.cachedPreorderVariantIds && _sqTrack.cachedPreorderVariantIds.preorder_variant_ids); })(), // Narrow, authoritative preorder signal: enrolled in an ENABLED STOQ selling plan // (is_preorder_variant above is the broad OOS+continue heuristic — non-STOQ too). in_enabled_plan: !!_sqPlan, // In-stock preorder signal: enrolled but currently IN STOCK (in the inStockVariantIds // set, not the OOS preorderVariantIds set). Same live-OR-cached pattern as // is_preorder_variant. is_preorder_variant OR is_instock_variant = "should sell via // the plan" regardless of stock, so an in-stock preorder bypass is detectable too. is_
instock_variant: (function () { var has = function (a) { return Array.isArray(a) && a.indexOf(_sqVidNum) !== -1; }; return has(_sqTrack.inStockVariantIds) || has(_sqTrack.cachedInStockVariantIds && _sqTrack.cachedInStockVariantIds.in_stock_variant_ids); })(), // The enrolled plan's Shopify selling-plan id + inventory_provider (stoq = STOQ tracks // the OOS count; shopify = in-stock preorder). Tells order-debug what kind of preorder // the Buy Now bypassed, without a downstream lookup. enrolled_plan_id: (_sqPlan && (_sqPlan.shopify_selling_plan_id || _sqPlan.shopify_selling_plan_group_id)) || '', enrolled_plan_provider: (_sqPlan && _sqPlan.inventory_provider) || '', block_enabled: !!(_sqTrack.cachedSettings && _sqTrack.cachedSettings.block_accelerated_checkout), gate_armed: !!_sqTrack.acceleratedGateArmed, gate_active _at_click: !!(document.documentElement && document.documentElement.classList.contains('stoq-buy-now-pending')), }, }); } catch (err) { /* never break checkout */ } }, true); } } catch (e) { /* fail open */ } 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 - No 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) { // Setup listener regardless - updateCartSellingPlans has its own guards // This ensures cleanup happens even when preorders are disabled globally // Listen for stoq:inventory-data-loaded event dispatched by api.js window.addEventListener('stoq:inventory-data-loaded', function(event) { console.debug('STOQ - Inventory data loaded, 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); }); } }); } // ---- Live settings via the Storefront API (additive, does not gate init) ---- // The inli
ned `cachedSettings` comes from the app-embed Liquid render, which // Shopify edge-caches and can serve stale. Reading the same `settings` metafield // back over the Storefront API is a POST to /api/ <
version>/graphql.json — never // CDN-cached — so it returns the live value on every page load. We fetch it // best-effort and stash it on `window._RestockRocketConfig.storefrontSettings` // so individual behaviours can migrate onto the fresh value over time. This is // PURELY ADDITIVE: it does NOT change the resolution flow below, never blocks // init, and silently no-ops on any failure / missing token. (function loadStorefrontSettings() { const cfg = window._RestockRocketConfig; if (!cfg.storefrontAccessToken || cfg.disableStorefrontApi === true) return; // Deferred to browser idle so this best-effort read runs strictly AFTER the // critical init flow and never competes with it for a connection — the call // is a live, uncached Storefront round-trip and can be slow (multi-second // TTFB observed). Nothing on the critical path waits for it. function run() { const query = 'query StoqSettings($namespace: String!) { shop { metafield(namespace: $namespace, key: "settings") { value } } }'; fetch( `https://${cfg.shop}/api/2025-07/graphql.json`, { method: 'POST', headers: { 'Content-Type': 'application/json', 'X-Shopify-Storefront-Access-Token': cfg.storefrontAccessToken, }, body: JSON.stringify({ query: query, variables: { namespace: cfg.metafieldNamespace } }), } ) .then(function(response) { if (!response.ok) { throw new Error('Storefront API HTTP ' + response.status); } return response.json(); }) .then(function(body) { if (body && body.errors && body.errors.length) { throw new Error('Storefront API errors: ' + body.errors.map(function(e) { return e && e.message; }).join(', ')); } const value = body && body.data && body.data.shop && body.data.shop.metafield && body.data.shop.metafield.value; if (!value) { throw new Error('Storefront API returned no settings metafield value'); } cfg.storefrontSettings = JSON.parse(value); console.debug('STOQ - stored live settings from Storefront API on config.storefrontSettings'); }) .catch(function(e) { console.debug('STOQ - Storefront settings fetch failed (non-fatal):', e && e.message); }); } if (typeof window.requestIdleCallback === 'function') { window.requestIdleCallback(run, { timeout: 5000 }); } else { setTimeout(run, 0); } })(); // 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': 'ski p' }; 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('S
TOQ - failed to load settings:', error); } }) .catch(function(e) { console.error(e) }) } function fetchEmbedConfig(endpoint, apply) { return fetch( `${window._RestockRocketConfig.host}/api/v1/embed/${endpoint}.json`, { headers: { 'X-Shopify-Shop-Domain': window._RestockRocketConfig.shop || window.Shopify.shop, 'ngrok-skip-browser-warning': 'skip' } } ) .then(function(response) { if (!response.ok) throw new Error(`Failed to fetch ${endpoint}`); return response.json(); }) .then(function(data) { try { apply(data); } catch (applyError) { // Apply failures are programming bugs (e.g. response shape changed // server-side and the assignment threw). Surface them as console.error // so they're visible in browser logs, then re-throw to fall through // to the same Liquid-cached fallback as a fetch failure. console.error('STOQ - apply failed for ' + endpoint + ':', applyError); throw applyError; } }) .catch(function(error) { console.debug(`STOQ - using cached ${endpoint}:`, error.message); }); } function initializeScripts(settings) { settings = applyTranslations(settings); window._RestockRocketConfig.settings = settings; console.debug(`STOQ - settings configured for ${window._RestockRocketConfig.pageType}`); // Stale-Liquid resilience (default-on, per-shop opt-out via the // `disable_refresh_on_stale_liquid` Toggle, surfaced as the negative // `disable_refresh_on_stale_liquid` flag in settings.json so that // `undefined` -- in CDN-cached metafield payloads that predate this // key -- reads as `!undefined === true` and gets default-on behavior // immediately, no metafield rewrite required). // When the Liquid CDN cache is older than LIQUID_CACHE_MAX_AGE the in-page // selling_plans / integrations metafields can be wrong; refresh both from // the API before launching scr
ipts. Race against a 1000ms timeout so a slow // API can't block init indefinitely. If the timeout wins, the in-flight // fetches still complete and update window._RestockRocketConfig — the // bundle re-reads sellingPlans/integrations on every interaction, so the // late-arriving values benefit subsequent renders even though the first // paint may use the Liquid-cached values. On any failure the existing // Liquid-loaded values stay in place via fetchEmbedConfig's catch. if (!window._RestockRocketConfig.isLiquidCacheFresh && !settings.disable_refresh_on_stale_liquid) { console.debug('STOQ - Liquid cache stale, refreshing selling_plans + integrations'); Promise.race([ Promise.all([ fetchEmbedConfig('selling_plans', function(data) { if (data && Array.isArray(data.plans)) { window._RestockRocketConfig.sellingPlans = data.plans; window._RestockRocketConfig.disabledSellingPlanIds = data.disabled_plan_ids || []; } }), fetchEmbedConfig('integrations', function(data) { if (Array.isArray(data)) { window._RestockRocketConfig.integrations = data; } }) ]), new Promise(function(resolve) { setTimeout(resolve, 1000); }) ]).then(function() { loadScripts(settings); }); return; } loadScripts(settings); } function loadScripts(settings) { // 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); }) // STOQ-1520: serve the lean back-in-stock-only build (no preorder/hijack code) // only to shops with NO preorder plans. Use the full build if preorder is o
n, // an enabled offer exists, or a disabled-but-kept plan id remains (cart sweep // must still strip those). Rationale in the PR. const hasEnabledOffer = Array.isArray(window._RestockRocketConfig.sellingPlans) && window._RestockRocketConfig.sellingPlans.some(function(plan) { return plan && plan.enabled; }); const hasDisabledPlanIds = Array.isArray(window._RestockRocketConfig.disabledSellingPlanIds) && window._RestockRocketConfig.disabledSellingPlanIds.length > 0; const usePreorderBuild = settings.preorder_enabled || hasEnabledOffer || hasDisabledPlanIds; const collectionScriptUrl = usePreorderBuild ? window._RestockRocketConfig.scriptUrlCollection : window._RestockRocketConfig.scriptUrlCollectionBis; const productScriptUrl = usePreorderBuild ? window._RestockRocketConfig.scriptUrlProduct : window._RestockRocketConfig.scriptUrlProductBis; const pageType = window._RestockRocketConfig.pageType; const collecti onPageTypes = ['collection', 'index', 'search', 'page']; if(collectionPageTypes.indexOf(pageType) !== -1 && (settings[`show_button_on_${pageType}`] || settings[`preorder_${pageType}_enabled`])) { createRestockRocketScript(collectionScriptUrl); } else if(pageType === 'product') { createRestockRocketScript(productScriptUrl); } else if(hijackIntegration) { createRestockRocketScript(window._RestockRocketConfig.scriptUrlCollection); } else if(usePreorderBuild) { // cart/article/blog/list-collections: full build so the cart sweep runs. createRestockRocketScript(window._RestockRocketConfig.scriptUrlCollection); } else { console.debug(`STOQ - no scripts enabled for ${pageType}`); } // Dispatch custom event when app is loaded // Cart selling plan updates will be triggered by stoq:inventory-data-loaded event const appLoadedEvent = new CustomEvent('stoq:loaded', { detail: { pageType: window._RestockR

Argon 18 Sum Pro Shimano Dura-Ace Di2

The Argon 18 Sum Pro is a top-tier race platform made to combine low weight, aero efficiency and sharp race handling. It is aimed at riders who want one fast road bike for climbing, fast rolling terrain, criteriums and bunch sprints. The frame uses Argon 18's Sum Pro chassis with integrated cabling, aero tube shaping, 3D fit system and clearance for up to 30C tyres, with measured clearance noted at 32mm.

This version is supplied in the Shimano Dura-Ace Di2 configuration and is available in Titanium / Racing Red or Crystal Black / Foil.

  • SUM Pro carbon race platform
  • Integrated cable routing
  • Aero/lightweight road geometry
  • Fits up to 30C tyres, with listed clearance up to 32mm
  • Available sizes: XXS 44-46, XS 47-50, S 51-53, M 54-56, L 57-59 and XL 60-62.

Key specification

Frame SUM Pro carbon frame
Fork SUM Pro specific carbon fork
Groupset Shimano Dura-Ace Di2 R9250/R9270
Crankset Shimano Dura-Ace R9200 52/36
Cassette Shimano Dura-Ace CS-R9200 11-30
Wheelset Scope Artech A4
Tyres Challenge Criterium RS TLR 28c Black
Brakes Shimano Dura-Ace Di2 R9270, RT-MT900 rotors F:160mm / R:140mm
Cockpit Vision Metron 5D ACR EVO
Saddle Repente Quasar CR Carbon Rail
Seatpost SUM specific, included with frameset
Cable routing Integrated cables

Images are supplied by Argon 18 and may be illustrative. Final specification can vary by region and assembly option.

Frequently Asked Questions

  • Please get in touch with a member of the team either by phone (01313745324) or email ([email protected]) where on of the team will be more than happy to help.

    ProjektRide Bike Shop Edinburgh

  • 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.

    Postage is free on orders over £50. Orders under £50, our postage charge is £3.99.

    We also have a physical store, if you are local please pop in -

    ProjektRide Bike Shop Edinburgh

    82 Newington Road, EH91QN, Edinburgh.