Landrum Elite Series Coil Spring - 5.5" OD - 9.500" Length - 550 lb/in Spring Rate - Front - Silver Powder Coat DK13231SFI You will also note that

You will also note that ARP offers specially undercut studs for several engines

1971-1974 Dodge W100 Pickup

CNC machined big-end for consistent sizing

2003-2013 Ford E-450 Super Duty

1997-1997 BMW 328i

Landrum Elite Series Coil Spring - 5.5" OD - 9.500" Length - 550 lb/in Spring Rate - Front - Silver Powder Coat DK13231SFI You will also note thatProduct Description: Coil Spring Elite Series 5. 5 in OD 9. 5 in Length 550 lb in Spring Rate Front Steel Silver Powder Coat Sold Individually Consistent Performance and Reliability Landrum Performance Springs give you the consistent high performance and reliability you need. We use state of the art designs, materials, and manufacturing processes to produce race springs that out perform the competition and help put you in victory lane. Lightweight,