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 330 4.0L 24V 77.50mm 9.0:1 Bolts & StudsEngine & Performance ARP cabinet with accessory bolts Bolts & StudsEngine & Performance Chevy Duramax 6.6L diesel CA625+ custom age HSK Engine & PerformanceEngine Block JE-Pistons kit R8 5.2L V10 ’09+ 85.00mm 9.0:1