{"product_id":"ferrea-98lbs-dual-valve-spring-kit-porsche-911-turbo-996tt-3-6l-turbo-s10122-x24","title":"Ferrea 98lbs Dual Valve Spring Kit (Set of 24) - Porsche \/ 911 Turbo 996TT \/ 3.6L Turbo","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eActual part may differ from image above.\u003cbr\u003e\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr\u003eThis Kit contains 24 \u003cspan data-mce-fragment=\"1\"\u003eFerrea Dual Intake \u0026amp; Exhaust Valve Springs\u003c\/span\u003e\u003cbr\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cspan face=\"Tahoma, Geneva, sans-serif\" data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-family: Tahoma, Geneva, sans-serif;\" face=\"Tahoma, Geneva, sans-serif\"\u003eFerrea Valve Springs are developed from high strength alloys, including premium grade chrome silicon steel. These springs are manufactured with state-of-the-art equipment. Our springs are heat-treated and stress relieved, which dramatically increases the spring’s life.\u003cbr\u003e\u003cbr\u003eThe design and processes on these dual valve springs are optimized to reduce valvetrain harmonics and provide greater stability on high horsepower applications. We use high grade premium super-clean PAC alloy materials and maintain tight tolerances for those unique aftermarket cylinder heads.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-family: Tahoma, Geneva, sans-serif;\" face=\"Tahoma, Geneva, sans-serif\"\u003eStrict quality control procedures and cycle testing ensures consistency from batch to batch. Ferrea Valve Springs provide the stability needed for high lift, high rpm racing engines, while minimizing the load loss for today’s aggressive valvetrain combinations.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e- Inner Spring OD 20.8mm\u003cbr data-mce-fragment=\"1\"\u003e- Inner Spring ID 15.88mm\u003cbr data-mce-fragment=\"1\"\u003e- Outer Spring OD 28mm\u003cbr data-mce-fragment=\"1\"\u003e- Outer Spring ID 20.8mm\u003cbr data-mce-fragment=\"1\"\u003e- Open Pressure 220lbs @ 24.5mm\u003cbr data-mce-fragment=\"1\"\u003e- Max Lift 11.2mm\u003cbr data-mce-fragment=\"1\"\u003e- Coil Bind 20mm\u003cbr data-mce-fragment=\"1\"\u003e- Manufacturer Ferrea\u003cbr data-mce-fragment=\"1\"\u003e- Valve Spring Type Dual\u003cbr data-mce-fragment=\"1\"\u003e- Seat Pressure 98lbs @ 33.5mm\u003cbr data-mce-fragment=\"1\"\u003e- Valve Spring Rate 309lbs\/inch\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eThis spring requires Ferrea Titanium Retainer # E11094 and Ferrea Spring Seat Locator # SL1099. (Discard OEM Spring Seat Locators) NOTE: Ferrea Seat Locators must be installed before valve seal installation and Max Net Lift is limited to 11.20 mm due to spring retainer and valve seal clearance.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003eReplaces OEM Part #  99-61-0-509-370 \/ 99 61 0 509 370 \/ 99610509370\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Ferrea","offers":[{"title":"Default Title","offer_id":32310765486135,"sku":"S10122-QTY24","price":727.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0005\/7773\/2663\/products\/DualValveSpring24_3dd6ab8c-10b1-48bc-97aa-8537c231b587.jpg?v=1600975285","url":"https:\/\/www.urotuning.com\/products\/ferrea-98lbs-dual-valve-spring-kit-porsche-911-turbo-996tt-3-6l-turbo-s10122-x24","provider":"UroTuning","version":"1.0","type":"link"}