Home / Engine & Performance / Manley Valve Spring 1.311 SINGLE HEMI Drag Pak “ARP cabinet with SS hex accessory bolts” has been added to your cart. View cart 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 R8 5.2L V10 ’09+ 85.00mm 9.0:1 Engine & PerformanceEngine Block JE-Pistons Kit Lambo. Gallardo 5.0L FSI V10 ’03-08 82.50mm Engine & PerformanceEngine Block JE-Pistons kit R8 5.2L V10 ’09+ 84.50mm 9.0:1 Bolts & StudsEngine & Performance ARP FORD 6.7L Powerstroke diesel CA625+ head stud kit