TOMEI cams are among the buffest cams made in terms of HP gain and ease of install. Tomei offer many different degrees of cams for your selection. These cams usually require upgrade valve springs to accomdate the exra lift. Solid Type: 272 Duration 12.5mm Lift (both intake and exhaust side). TOMEI SR20DET TYPE-A Valve Springs.The item "Tomei Pro Cams Camshaft for Nissan SR20 SR20DET S14 S15 240SX Solid Lifters" is in sale since Tuesday, January 8, 2019. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Other Engines & Engine Parts". The seller is "autocat51" and is located in West Covina, California. This item can be shipped worldwide.