{"product_id":"ultra-pro-magnum-xd-rocker-set-w-1-5-ratio-for-chevrolet-sbc-w-1-2-stud","title":"Ultra Pro Magnum XD Rocker Set W\/ 1.5 Ratio For Chevrolet SBC W\/ 1\/2\" Stud","description":"\u0026lt;b\u0026gt;The latest development in Rocker arm Technology from COMP Cams are Ultra Pro Magnumâ„¢ XD Rocker Arms built for 1\/2\" Studs to increase valve train stiffness and stability.\u0026lt;\/b\u0026gt; Designed to be used in conjunction with the COMP Cams Hi-Tech 1\/2\" Rocker Stud Kit, the latest versions of COMP Cams Ultra Pro Magnum XD are built to utilize 1\/2\" Studs to stabilize SBC valve trains. Ultra Pro Magnumâ„¢ XD Rockers are built to outlast and outperform in accuracy and strength, while maintaining all the benefits of the Ultra Pro Magnumâ„¢ version. The XD Rockers are engineered from durable 8650 Steel and include a machined billet Pushrod seat insert for a super-accurate ratio. The Rockers also boast precision-sorted needle bearings and hardened Roller tips. And since they now feature the added benefit of accepting 1\/2\" Studs, they are a great choice for anyone looking for more stiffness with Stud mount Rockers. These new Ultra Pro Magnumâ„¢ XD Rocker Arms will provide the ultimate in valve train stability for maximum valve motion both at the track and on the street.\r\n\u0026lt;ul\u0026gt;\r\n\u0026lt;li\u0026gt;1\/2\" Studs provide a stiffer valve train to achieve maximum valve motion in SBC engines\u0026lt;\/li\u0026gt;\r\n\u0026lt;li\u0026gt;Deliver increased strength and rigidity while reducing the moment of inertia and optimizing dynamic balance\u0026lt;\/li\u0026gt;\r\n\u0026lt;li\u0026gt;Ultra Pro Magnumâ„¢ XD Rockers feature a machined billet Pushrod seat insert for a super-accurate ratio\u0026lt;\/li\u0026gt;\r\n\u0026lt;\/ul\u0026gt;\r\n\u003ch3\u003eAttributes:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eBrand Name: \u003c\/b\u003eCOMP Cams\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGTIN: \u003c\/b\u003e00036584259466\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eAmazon ASIN: \u003c\/b\u003eB00CWZV40G\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eC.A.R.B. E.O. Number: \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eC.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: \u003c\/b\u003eYes, but must meet tailpipe emission standards for year of vehicle.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eC.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: \u003c\/b\u003eYes, but must meet tailpipe emission standards for year of vehicle.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eC.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: \u003c\/b\u003eYes, but must meet tailpipe emission standards for year of vehicle.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eC.A.R.B. Exempt for On-Road Vehicles?: \u003c\/b\u003eNo\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eC.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: \u003c\/b\u003eYes, but must be a race\/competition only vehicle.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eC.A.R.B. Exemption Reason: \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eEngine Family: \u003c\/b\u003eChevrolet 262-400 c.i. 8 Cylinder (1958-1998)\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eMaximum Valve Spring Open Pressure: \u003c\/b\u003e1000\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eRocker Arm Material: \u003c\/b\u003e8650 Chromemoly Steel\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eRocker Arm Ratio: \u003c\/b\u003e1.5\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eRocker Arm Series: \u003c\/b\u003eUltra Pro Magnum XD\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eRocker Stud Diameter: \u003c\/b\u003e1\/2\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003eExtended Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eCountry of Origin: \u003c\/b\u003eUnited States\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eEmissions : \u003c\/b\u003eCARB Eligible\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003ePacking Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eQuantity of Each: \u003c\/b\u003e1\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003ePackage UOM: \u003c\/b\u003eKT\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eDimension: \u003c\/b\u003e12.8 x 4.1 x 3.8 inches\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eWeight: \u003c\/b\u003e9.3035 POUNDS\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cdiv id=\"sema-product-fitment\" class=\"product__accordion accordion fitment\"\u003e\u003c\/div\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":44707284484141,"sku":"BDQQ-1810-16","price":1299.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0646\/2780\/2157\/files\/1810-16.jpg?v=1773362065","url":"https:\/\/montgomeryparts.com\/products\/ultra-pro-magnum-xd-rocker-set-w-1-5-ratio-for-chevrolet-sbc-w-1-2-stud","provider":"Montgomery Parts","version":"1.0","type":"link"}