ICON Vehicle Dynamics 2021-2026 Ford F-150 Tremor 2.5-3" Lift Stage 3 Tubular Suspension System with Leaf Packs

The ICON Vehicle Dynamics Stage 3 Suspension System is a complete, 100% bolt-on upgrade engineered exclusively for the 2021–2026 Ford F-150 Tremor, delivering 2.5–3" of front lift and a 20% increase in front wheel travel over stock. The system pairs 2.5 Series remote-reservoir coilovers up front with tubular Delta Joint PRO upper control arms, 2.5 Aluminum Series piggyback reservoir rear shocks, ICON Multi-Rate Leaf Springs, and billet aluminum 1" lowering shackles, all tuned specifically for the Tremor's geometry and load characteristics.

Shipping: ICON parts ship direct from ICON Vehicle Dynamics, mostly by UPS Ground. Lead times vary by part and some items are built to order, so please allow extra time. We email tracking as soon as your order ships.

More Travel, Better Control on Every Surface

The front 2.5 Series coilovers are built to a Tremor-specific length and are height-adjustable across the full 2.5–3" lift range, so the system accommodates larger wheel and tire combinations without compromising alignment geometry. Remote reservoirs keep shock fluid cooler during sustained off-road use, preserving consistent damping when heat buildup would otherwise cause fade. The 20% gain in front wheel travel means the suspension can absorb larger obstacles before reaching the limits of its stroke, a meaningful difference on rocky or rutted terrain where stock suspension runs out of travel quickly.

Delta Joint PRO Upper Control Arms: Rebuildable, Not Disposable

The tubular upper control arms use ICON's patented Delta Joint PRO articulation joint, which combines a chromoly ball and shaft hardened to Rockwell C 55 with graphite-impregnated sintered metal races. The joint provides a full 90 degrees of articulation (a 14% improvement in range of motion over ICON's standard Delta Joint) and 56% more bearing surface for greater load capacity. Unlike sealed motorsports-style joints, the Delta Joint PRO is fully rebuildable: individual components can be removed, inspected, and replaced without replacing the entire joint. The tubular arm design also increases caster over stock and helps retain the factory alignment specification range at the lifted height.

Three Rear Spring Rates, One System

ICON Multi-Rate Leaf Springs replace the factory rear leaf pack and blocks, reducing axle wrap and improving ride quality. Three user-selectable spring-rate configurations allow the rear ride height and spring stiffness to be tuned to the truck's actual use: Option 1 (as shipped) adds approximately 0.5" of rear lift over stock unloaded; Option 2 adds 20% spring rate over Option 1 and 1.75" of rear lift unloaded (0.5" with a 400 lb constant load); Option 3 adds 40% spring rate over Option 1 and 2.5" of rear lift unloaded (0" net lift with an 850 lb constant load). Billet aluminum 1" lowering shackles using OE Ford bushings keep rear ride height within an acceptable range across all three configurations.

Features

• Height-adjustable front coilovers: 2.5 Series remote-reservoir units in Tremor-specific length, 2.5–3" of front lift over stock
• Delta Joint PRO tubular upper control arms: chromoly ball hardened to Rockwell C 55, 90° articulation, fully rebuildable and serviceable
• 2.5 Aluminum Series piggyback reservoir rear shocks: vehicle-specific valving with 7/8" hardened chromed steel shafts
• ICON Multi-Rate Leaf Springs: three selectable spring-rate configurations, 0.5–2.5" of rear lift depending on option and load
• Billet aluminum 1" lowering shackles: maintenance-free OE Ford bushings
• 100% bolt-on installation: no cutting or welding required

Specifications

Who This Is For and Isn't

This system is built for 2021–2026 Ford F-150 Tremor owners who want a complete, bolt-on suspension upgrade that increases front wheel travel, adds 2.5–3" of front lift, and allows rear spring-rate tuning for varying loads, whether the truck sees regular off-road use, overlanding, or mixed on- and off-road driving. Aftermarket wheels with lower offset and less backspace than OE are recommended to clear the wider suspension geometry; ICON Alloys 17x8.5" (5" backspace / 6mm offset), 18x9" (5.25" backspace / 6mm offset), and 20x9" (5.625" backspace / 16mm offset) are specifically recommended.

This system fits the F-150 Tremor only and is not compatible with other F-150 trims. It is not compatible with aftermarket steering knuckles; only OE steering knuckles may be used. Not all OE wheel and tire combinations clear the lifted geometry. Vehicles equipped with Dynamic Bending Headlamps require the separate ICON part 611081 sensor mount kit (sold separately). ADAS recalibration is required after installation. Vehicles with Onboard Scales may see reduced rear scale accuracy when the lower spring-rate leaf configuration is used. Maximum recommended tire size without fender trimming is 34x12.50".

Common Questions

Does this system fit all F-150 trims, or only the Tremor?

The ICON Stage 3 system with SKU K93163TL is engineered exclusively for the 2021–2026 Ford F-150 Tremor. The front coilovers are built to a Tremor-specific length and the system is not compatible with other F-150 configurations. Attempting to install it on a non-Tremor F-150 is not supported by ICON's application data.

What rear lift height will the truck sit at after installation?

The ICON Multi-Rate Leaf Springs included in this Stage 3 system offer three configurations. As shipped (Option 1), the rear sits approximately 0.5" above stock ride height unloaded. Option 2 raises the rear to approximately 1.75" over stock unloaded, or 0.5" over stock with a 400 lb constant load. Option 3 raises the rear to approximately 2.5" over stock unloaded, or returns to stock height under an 850 lb constant load.

Is cutting or welding required to install this system?

No cutting or welding is required. The ICON Stage 3 Tremor suspension system is a 100% bolt-on installation. However, ADAS recalibration is required after installation, and trucks equipped with Dynamic Bending Headlamps also require a separate ICON sensor mount kit (part 611081, sold separately).

Can the Delta Joint PRO be serviced without replacing the entire upper control arm?

Yes. The Delta Joint PRO used in the tubular upper control arms included with this system is fully rebuildable and serviceable. The chromoly ball, shaft, and graphite-impregnated sintered metal races can each be removed, inspected, and replaced independently without purchasing a complete new joint or control arm assembly.

Will my factory wheels clear the suspension after installation?

Not all OE wheel and tire combinations are compatible with this system's lifted geometry. Aftermarket wheels with lower offset and less backspace than stock are recommended. ICON specifically recommends ICON Alloys in 17x8.5" with 5" backspace and 6mm offset, 18x9" with 5.25" backspace and 6mm offset, or 20x9" with 5.625" backspace and 16mm offset. The maximum recommended tire size without fender trimming or modification is 34x12.50".