Home / Engine & Performance / Manley Valve Spring 1.311 SINGLE HEMI Drag Pak Manley Valve Spring 1.311 SINGLE HEMI Drag Pak€ 510,97 Manley Valve Spring 1.311 SINGLE HEMI Drag Pak quantity Add to cart SKU: 221431X-16 Categories: Cylinder Head, Engine & Performance, Valves & Springs Brand: Manley Related products Engine & PerformanceEngine Block JE-Pistons kit Ferrari 250 3.0L 24V 74.00mm 9.5:1 Bolts & StudsEngine & Performance ARP cabinet with SS hex accessory bolts Engine & PerformanceEngine Block JE-Pistons kit Ferrari 330 4.0L 24V 77.50mm 10.0:1 Engine & PerformanceTurbochargers Haltech Turbosmart GenV eWG50 Progate 50