{"product_id":"bc0300hd-toyota-2jz-1jz-heavy-duty-single-spring-titanium-retainer-kit","title":"BC0300S - Toyota 2JZ\/1JZ Single Spring\/Steel Retainer Kit","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv data-is-intersecting=\"true\" data-turn-id-container=\"request-6a00b95c-a878-8390-b417-68518f2031d8-19\" class=\"\"\u003e\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection data-turn=\"assistant\" data-scroll-anchor=\"false\" data-testid=\"conversation-turn-70\" data-turn-id-container=\"request-6a00b95c-a878-8390-b417-68518f2031d8-19\" data-turn-id=\"request-6a00b95c-a878-8390-b417-68518f2031d8-19\" dir=\"auto\" class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-turn-start-message=\"true\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5-5\" dir=\"auto\" data-message-id=\"db311fb6-ba3c-4d20-a63c-7798553d5b4c\" data-message-author-role=\"assistant\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a00b95c-a878-8390-b417-68518f2031d8-23\" data-is-intersecting=\"true\"\u003e\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a00b95c-a878-8390-b417-68518f2031d8-23\" data-turn-id-container=\"request-6a00b95c-a878-8390-b417-68518f2031d8-23\" data-testid=\"conversation-turn-72\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"c19dd70c-ed72-409d-a8bd-f3104e81ab1b\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003ch1 data-section-id=\"w4rkeu\" data-start=\"0\" data-end=\"88\"\u003eBrian Crower Single Valve Spring and Steel Retainer Kit for Toyota 1JZ \/ 2JZ (BC0300S)\u003c\/h1\u003e\n\u003cp data-start=\"90\" data-end=\"431\"\u003eWhen building a high-performance JZ engine, maintaining precise valve control at elevated RPM is essential for both reliability and power. The Brian Crower Single Valve Spring and Steel Retainer Kit is engineered to provide the spring pressure and durability required to support aggressive camshaft profiles and sustained high-RPM operation.\u003c\/p\u003e\n\u003cp data-start=\"433\" data-end=\"862\"\u003eDesigned for applications up to 9,000 RPM and 800 wheel horsepower, this kit features PAC Racing valve springs manufactured from premium super-clean chrome silicone alloy using proprietary processing techniques to ensure consistent spring pressures and long-term reliability. Combined with durable steel retainers, the kit delivers excellent valvetrain stability while offering a cost-effective alternative to titanium retainers.\u003c\/p\u003e\n\u003cp data-start=\"864\" data-end=\"1069\"\u003eWhether you're upgrading a street-driven 1JZ-GTE or assembling a fully built 2JZ-GTE for drift, drag, or circuit use, this kit provides the valve control needed to unlock the full potential of your engine.\u003c\/p\u003e\n\u003cp data-start=\"1071\" data-end=\"1273\"\u003eTrusted by professional engine builders and motorsport teams worldwide, Brian Crower valvetrain components are a proven upgrade for keeping Toyota’s legendary JZ engines performing reliably at high RPM.\u003c\/p\u003e\n\u003cp data-start=\"1275\" data-end=\"1356\"\u003eCarefully selected for builders who demand proven performance without compromise.\u003c\/p\u003e\n\u003chr data-start=\"1358\" data-end=\"1361\"\u003e\n\u003ch2 data-section-id=\"f8iud9\" data-start=\"1363\" data-end=\"1411\"\u003eWhy Upgrade Your Valve Springs and Retainers?\u003c\/h2\u003e\n\u003cp data-start=\"1413\" data-end=\"1455\"\u003eCompared to factory valvetrain components:\u003c\/p\u003e\n\u003cp data-start=\"1457\" data-end=\"1737\"\u003e✔ Increased spring pressure for improved valve control at high RPM\u003cbr data-start=\"1523\" data-end=\"1526\"\u003e✔ Designed for up to 9,000 RPM and 800 WHP\u003cbr data-start=\"1568\" data-end=\"1571\"\u003e✔ Prevents valve float with aggressive camshaft profiles\u003cbr data-start=\"1627\" data-end=\"1630\"\u003e✔ Durable steel retainers for long-term reliability\u003cbr data-start=\"1681\" data-end=\"1684\"\u003e✔ Trusted by professional engine builders worldwide\u003c\/p\u003e\n\u003chr data-start=\"1739\" data-end=\"1742\"\u003e\n\u003ch2 data-section-id=\"1ma7m6t\" data-start=\"1744\" data-end=\"1759\"\u003eKey Features\u003c\/h2\u003e\n\u003cp data-start=\"1761\" data-end=\"2103\"\u003e✔ Genuine Brian Crower single valve spring and steel retainer kit\u003cbr data-start=\"1826\" data-end=\"1829\"\u003e✔ PAC Racing springs manufactured from premium chrome silicone alloy\u003cbr data-start=\"1897\" data-end=\"1900\"\u003e✔ High-strength steel retainers included (BC2300S-24)\u003cbr data-start=\"1953\" data-end=\"1956\"\u003e✔ Designed for high-RPM and high-boost applications\u003cbr data-start=\"2007\" data-end=\"2010\"\u003e✔ Compatible with OEM spring seats\u003cbr data-start=\"2044\" data-end=\"2047\"\u003e✔ Suitable for street, drag, drift, and circuit builds\u003c\/p\u003e\n\u003chr data-start=\"2105\" data-end=\"2108\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"2110\" data-end=\"2137\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"2139\" data-end=\"2655\"\u003e✔ Brand: Brian Crower\u003cbr data-start=\"2160\" data-end=\"2163\"\u003e✔ Part Number: BC0300S\u003cbr data-start=\"2185\" data-end=\"2188\"\u003e✔ Spring Type: BC1300 Single Spring\u003cbr data-start=\"2223\" data-end=\"2226\"\u003e✔ Free Length: 1.690\"\u003cbr data-start=\"2247\" data-end=\"2250\"\u003e✔ Seat Pressure: 80 lbs @ 1.325\"\u003cbr data-start=\"2282\" data-end=\"2285\"\u003e✔ Open Pressure: 158 lbs @ 0.980\"\u003cbr data-start=\"2318\" data-end=\"2321\"\u003e✔ Coil Bind Height: 0.810\"\u003cbr data-start=\"2347\" data-end=\"2350\"\u003e✔ Retainers Included: BC2300S-24 Steel Retainers\u003cbr data-start=\"2398\" data-end=\"2401\"\u003e✔ Spring Seat: OEM\u003cbr data-start=\"2419\" data-end=\"2422\"\u003e✔ Maximum Net Cam Lift: 0.460\" \/ 11.68 mm\u003cbr data-start=\"2463\" data-end=\"2466\"\u003e✔ Maximum RPM: Up to 9,000 RPM\u003cbr data-start=\"2496\" data-end=\"2499\"\u003e✔ Power Rating: Up to 800 WHP\u003cbr data-start=\"2528\" data-end=\"2531\"\u003e✔ Material: Chrome Silicone Alloy\u003cbr data-start=\"2564\" data-end=\"2567\"\u003e✔ Application: High-Performance Valvetrain Upgrade\u003cbr data-start=\"2617\" data-end=\"2620\"\u003e✔ Engine Family: Toyota JZ-Series\u003c\/p\u003e\n\u003chr data-start=\"2657\" data-end=\"2660\"\u003e\n\u003ch2 data-section-id=\"15vxm9q\" data-start=\"2662\" data-end=\"2683\"\u003eCompatible Engines\u003c\/h2\u003e\n\u003cp data-start=\"2685\" data-end=\"2730\"\u003e✔ 1JZ-GE\u003cbr data-start=\"2693\" data-end=\"2696\"\u003e✔ 1JZ-GTE\u003cbr data-start=\"2705\" data-end=\"2708\"\u003e✔ 2JZ-GE\u003cbr data-start=\"2716\" data-end=\"2719\"\u003e✔ 2JZ-GTE\u003c\/p\u003e\n\u003chr data-start=\"2732\" data-end=\"2735\"\u003e\n\u003ch2 data-section-id=\"icfs9j\" data-start=\"2737\" data-end=\"2748\"\u003eShipping\u003c\/h2\u003e\n\u003cp data-start=\"2750\" data-end=\"2834\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e🇪🇺 EU Delivery: 5–10 Business Days\u003cbr data-start=\"2786\" data-end=\"2789\"\u003e🌍 International Delivery: 7–21 Business Days\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"contents\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv aria-hidden=\"true\" class=\"pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Brian Crower","offers":[{"title":"Default Title","offer_id":57666090008924,"sku":null,"price":201.47,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/6300\/6300\/files\/ChatGPTImageMay17_2026_10_28_58AM.png?v=1779002951","url":"https:\/\/jzsignature.com\/products\/bc0300hd-toyota-2jz-1jz-heavy-duty-single-spring-titanium-retainer-kit","provider":"JZ Signature","version":"1.0","type":"link"}