The ICON Vehicle Dynamics 1999-2026 Ford F-250/F-350 Super Duty 4” Rear Block Kit features a square, non-tapered block design to provide easy rear lift to a Ford Super Duty pickup. These heavy-duty blocks are fabricated from CNC laser cut and brake-formed steel plate and heavy duty .250” wall square tubing to endure the stresses of heavy towing/hauling duty as well as aggressive off-road use. Their reinforced bump stop tang provides proper bump stop engagement and limits compression travel to prevent damage to the rear shocks and shock mounts at full bottom out. These blocks look as good as they perform with a semi-gloss black powder coat finish and are backed by ICON’s Limited Lifetime Warranty.
The ICON Super Duty 4” Rear Block Kit features a square block design fabricated from CNC laser cut and brake-formed steel plate and heavy duty square tubing to endure the stresses of heavy towing/hauling as well as aggressive off-road use.
APPLICATION NOTE #491: Depending on year and leaf spring configuration installer must use the appropriate U-bolts (not included in kit)
APPLICATION NOTE #155: Requires recalibration of Advanced Driver Assistance Systems (ADAS) after install
Fabricated from CNC laser cut and brake-formed steel plate and heavy-duty .250” wall square tubing
These blocks are flat like the factory block and have a built in bump-stop tang.
APPLICATION NOTE #213: Will not fit 2023-2025 F-350 with dual rear wheels
Heavy-duty bump stop tang provides proper bump stop engagement
Vehicle specific, square block design with 4” overall height
Semi-gloss black powder coat finish for corrosion resistance
ICON 1999+ Ford F-250/F-350 4in Block Kit
1999-UP FORD SUPER DUTY 4" BLOCK KIT
Suspension Leaf Spring Block Kit
ICON Limited Lifetime Warranty
99-UP FSD 4" BLOCK KIT
99-26 FSD 4" BLOCK KIT
FSD 4" BLOCK KIT
FSD 4" BLOCKS
194275
