{"product_id":"bc0300hd-toyota-2jz-1jz-heavy-duty-single-spring-titanium-retainer-kit-1","title":"BC0300HD - Toyota 2JZ\/1JZ Heavy-Duty Single Spring\/Titanium Retainer Kit","description":"\u003ch1 data-section-id=\"zilau5\" data-start=\"0\" data-end=\"96\"\u003eBrian Crower Heavy-Duty Valve Spring and Titanium Retainer Kit for Toyota 1JZ \/ 2JZ (BC0300HD)\u003c\/h1\u003e\n\u003cp data-start=\"98\" data-end=\"484\"\u003eWhen building a high-horsepower JZ engine, valvetrain stability becomes critical to maintaining reliable performance at elevated RPM and boost levels. The Brian Crower Heavy-Duty Single Valve Spring and Titanium Retainer Kit is engineered to provide the increased spring pressure and precise valve control required for aggressive camshaft profiles and demanding motorsport applications.\u003c\/p\u003e\n\u003cp data-start=\"486\" data-end=\"918\"\u003eRated for applications exceeding 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 durability. Paired with lightweight titanium retainers, the kit reduces valvetrain mass while delivering the control needed to prevent valve float during extended high-RPM operation.\u003c\/p\u003e\n\u003cp data-start=\"920\" data-end=\"1153\"\u003eWhether you're assembling a high-revving 1JZ-GTE, upgrading a fully built 2JZ-GTE, or preparing a serious street, drift, drag, or circuit engine, this kit provides the reliability and performance required to support your build goals.\u003c\/p\u003e\n\u003cp data-start=\"1155\" data-end=\"1350\"\u003eTrusted by professional engine builders and motorsport teams worldwide, Brian Crower valvetrain components are a proven upgrade for unlocking the full potential of Toyota’s legendary JZ platform.\u003c\/p\u003e\n\u003cp data-start=\"1352\" data-end=\"1433\"\u003eCarefully selected for builders who demand proven performance without compromise.\u003c\/p\u003e\n\u003chr data-start=\"1435\" data-end=\"1438\"\u003e\n\u003ch2 data-section-id=\"f8iud9\" data-start=\"1440\" data-end=\"1488\"\u003eWhy Upgrade Your Valve Springs and Retainers?\u003c\/h2\u003e\n\u003cp data-start=\"1490\" data-end=\"1532\"\u003eCompared to factory valvetrain components:\u003c\/p\u003e\n\u003cp data-start=\"1534\" data-end=\"1818\"\u003e✔ Increased spring pressure for superior valve control at high RPM\u003cbr data-start=\"1600\" data-end=\"1603\"\u003e✔ Rated for applications exceeding 800 WHP\u003cbr data-start=\"1645\" data-end=\"1648\"\u003e✔ Prevents valve float with aggressive camshaft profiles\u003cbr data-start=\"1704\" data-end=\"1707\"\u003e✔ Lightweight titanium retainers reduce valvetrain mass\u003cbr data-start=\"1762\" data-end=\"1765\"\u003e✔ Trusted by professional engine builders worldwide\u003c\/p\u003e\n\u003chr data-start=\"1820\" data-end=\"1823\"\u003e\n\u003ch2 data-section-id=\"1ma7m6t\" data-start=\"1825\" data-end=\"1840\"\u003eKey Features\u003c\/h2\u003e\n\u003cp data-start=\"1842\" data-end=\"2176\"\u003e✔ Genuine Brian Crower heavy-duty single valve spring kit\u003cbr data-start=\"1899\" data-end=\"1902\"\u003e✔ PAC Racing springs manufactured from premium chrome silicone alloy\u003cbr data-start=\"1970\" data-end=\"1973\"\u003e✔ Lightweight titanium retainers included (BC2300-24)\u003cbr data-start=\"2026\" data-end=\"2029\"\u003e✔ Designed for high-RPM and high-boost applications\u003cbr data-start=\"2080\" data-end=\"2083\"\u003e✔ Compatible with OEM spring seats\u003cbr data-start=\"2117\" data-end=\"2120\"\u003e✔ Suitable for street, drag, drift, and circuit builds\u003c\/p\u003e\n\u003chr data-start=\"2178\" data-end=\"2181\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"2183\" data-end=\"2210\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"2212\" data-end=\"2705\"\u003e✔ Brand: Brian Crower\u003cbr data-start=\"2233\" data-end=\"2236\"\u003e✔ Part Number: BC0300HD\u003cbr data-start=\"2259\" data-end=\"2262\"\u003e✔ Spring Type: BC1300 Heavy-Duty Single Spring\u003cbr data-start=\"2308\" data-end=\"2311\"\u003e✔ Free Length: 1.690\"\u003cbr data-start=\"2332\" data-end=\"2335\"\u003e✔ Seat Pressure: 102 lbs @ 1.320\"\u003cbr data-start=\"2368\" data-end=\"2371\"\u003e✔ Open Pressure: 215 lbs @ 0.900\"\u003cbr data-start=\"2404\" data-end=\"2407\"\u003e✔ Coil Bind Height: 0.835\"\u003cbr data-start=\"2433\" data-end=\"2436\"\u003e✔ Retainers Included: BC2300-24 Titanium Retainers\u003cbr data-start=\"2486\" data-end=\"2489\"\u003e✔ Spring Seat: OEM\u003cbr data-start=\"2507\" data-end=\"2510\"\u003e✔ Maximum Net Cam Lift: 0.460\" \/ 11.68 mm\u003cbr data-start=\"2551\" data-end=\"2554\"\u003e✔ Power Rating: 800+ WHP\u003cbr data-start=\"2578\" data-end=\"2581\"\u003e✔ Material: Chrome Silicone Alloy\u003cbr data-start=\"2614\" data-end=\"2617\"\u003e✔ Application: High-Performance Valvetrain Upgrade\u003cbr data-start=\"2667\" data-end=\"2670\"\u003e✔ Engine Family: Toyota JZ-Series\u003c\/p\u003e\n\u003chr data-start=\"2707\" data-end=\"2710\"\u003e\n\u003ch2 data-section-id=\"15vxm9q\" data-start=\"2712\" data-end=\"2733\"\u003eCompatible Engines\u003c\/h2\u003e\n\u003cp data-start=\"2735\" data-end=\"2780\"\u003e✔ 1JZ-GE\u003cbr data-start=\"2743\" data-end=\"2746\"\u003e✔ 1JZ-GTE\u003cbr data-start=\"2755\" data-end=\"2758\"\u003e✔ 2JZ-GE\u003cbr data-start=\"2766\" data-end=\"2769\"\u003e✔ 2JZ-GTE\u003c\/p\u003e\n\u003chr data-start=\"2782\" data-end=\"2785\"\u003e\n\u003ch2 data-section-id=\"icfs9j\" data-start=\"2787\" data-end=\"2798\"\u003eShipping\u003c\/h2\u003e\n\u003cp data-start=\"2800\" data-end=\"2884\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e🇪🇺 EU Delivery: 5–10 Business Days\u003cbr data-start=\"2836\" data-end=\"2839\"\u003e🌍 International Delivery: 7–21 Business Days\u003c\/p\u003e","brand":"Brian Crower","offers":[{"title":"Default Title","offer_id":57666098823516,"sku":null,"price":551.19,"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-1","provider":"JZ Signature","version":"1.0","type":"link"}