Important Notes
- Dually applications will require different rear 3-7/8" I.D. u-bolts.
-
Will not fit vehicles manufactured before 3-1-1999 with 5/8" track bar bolt head size.
- Vehicles equipped with 2 piece rear driveshafts may require the carrier bearing to be lowered.
If vehicle is equipped with rear top mounted overload springs 4 of u-bolt part number UBT4035 may be required. Selecting the Ubolt option below will add four (4) UBT4035s to the base kit.
- Trucks equiped with gas engine may achieve a slightly higher front stance.
If truck is equipped with curved/radiussed style front ubolts order kit # F1. If truck is equipped with square style front ubolts order kit # F2
Features & Benefits
- New front leaf springs with bolt style leaf alignment clamps, anti-friction pads, OE style rubber bushings and tapered leaves for long term performance and great ride qualtiy
1-1/4".
- Solid steel track bar with urethane mounts to properly center the axle
- New front & Rear U-bolt with high nuts & washers
Rear 3" Block kit
- Performance custom valved Zone Shocks included
Climb up and stand out from the crowd with this 4" Lift Kit that will have you clearing 35" tires. You'll definitely make a statement with this complete with leaf spring & block lift for your 4WD 1999 Ford F-250 / F-350.
Recommended Tires & Wheels
(Trimming may be required)
- 35 x 12.5 with 16 x 10 and 4 in. Backspace
Front U-Bolt Type
This vehicle was manufactured with either square front U-Bolts or radiused front U-bolts. Typically, 1999-2000 are square and 2001-2004 are radiused, but that is not always the case. The radiused U-bolts aren't square or round, but rather have a gentle radius that matches a cast factory upper U-bolt plate on top of the factory spring. Vehicles manufactured prior to 2-28-99 require yet another different box kit due to a change in the factory track bar. Please make the appropriate selection for your particular vehicle.
Shock Option
Nitro Series
- Nitrogen-charged
- Twin-tube design
- 10-stage velocity-sensitive valving
- Dual-welded ends for increased strength
- Self-lubricating seals
- Black powder coat finish
FOX 2.0 Adventure Series
- 2-inch diameter steel body
- Internal floating piston (IFP) monotube design
- Large 5/8-inch hard chrome plated heat-treated alloy steel shaft
- Race-developed high-flow piston design
- Application-specific valving to maximize performance
- Long-lasting clear anodized finish
