99-04 FSD 3.5" BUMP STOP SPACER KIT Fits select: 1999-2004 FORD F250, 1999-2004 FORD F350

99-04 FSD 3.5" BUMP STOP SPACER KIT. 1999-2004 FORD SUPER DUTY 3.5" BUMP STOP SPACER KIT. This 3.5 inch Bump Stop Spacer Kit is used to prevent an 8 inch Suspension System from over compressing. If your suspension were to over compress you could negative arc your springs, causing fatigue and premature sag, as well as bottom out your shocks causing them to leak and fail. These spacers and an inexpensive way to prevent a world of expensive problems.