Buying guide
2021–2025 F-150 leveling: ICON IVD6120 2" front spacer on the factory strut, or Bilstein 24-352925 ride-height shock (4WD, 0–2.5"). Not Tremor, Raptor, or CCD.
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7 min read
Buying guide
For you if: you drive a 2021–2025 F-150 and you want the front closer to level with the rear. You already know whether you are buying a spacer or a ride-height shock.
Skip this page if: you want a full lift kit, a rear block, or one kit that fits every truck. Skip if the truck is a Tremor, a Raptor, or has factory electronic / CCD suspension. Skip Bilstein 24-352925 if the truck is 2WD — this part number is 4WD only. Comparing trucks or want Bilstein series context across pickups → best truck leveling kit.
Credit: ICON Vehicle Dynamics
01 · 2-inch front spacer, 2021–2025 F-150
2-inch fabricated steel front strut spacer. Bolts on the factory strut. Maker: 2004–2026 F-150 2WD/4WD; this page targets 2021–2025. 33-inch tires with proper clearance. Not a shock. Not Tremor, Raptor, or factory electronic suspension. ADAS recalibration after install. Part IVD6120.
02 · Front ride-height shock, 2021–2026 F-150 4WD
Front leveling shock. Snap-ring spring seat. Application: 2021–2026 F-150 4WD, 0–2.5″ with OE springs, without CCD, exclude Raptor. Sold each — order qty 2. Not a spacer. This part number is 4WD only. Part 24-352925.
Check Bilstein B8 5100 (maker) Check Bilstein 24-352925 (truckspring)
Same aisle. Different hardware.
ICON IVD6120 leaves the factory strut in place. The spacer sits on top and lifts the front 2 inches so the nose sits closer to the rear. Hardware is in the kit.
Bilstein 24-352925 replaces the front shock. You set ride height on that shock — 0–2.5″ with OE springs on the 4WD application listed here. It is not a bolt-on spacer.
A 2-inch spacer is not a 0–2.5 inch shock. Do not order one and expect the other.
ICON spacer: maker lists 2WD or 4WD. Bilstein 24-352925: 4WD only on this page. If you need 2WD, match a verified 2WD application — not this part number.
Both skip Tremor and Raptor. ICON skips factory electronic suspension. Bilstein 24-352925 skips CCD / electronic suspension and Raptor.
ICON: ADAS recalibration, on the maker page. Bilstein dealer charts may note front radar realignment when adaptive cruise is equipped. Front level only — not a full lift, not rear blocks.
Credit: ICON Vehicle Dynamics
Pick: 2-inch F-150 spacer
For a 2021–2025 F-150 when you want a spacer on the factory strut, not a new shock.
Drawback: After install, the ICON page says ADAS needs a recalibration. Wrong kit for Tremor, Raptor, or factory electronic suspension.
Pick: ride-height shock
For a 2021–2026 F-150 4WD when you want a front shock that sets ride height on OE springs.
Drawback: 4WD only on this PN. CCD and Raptor are out. Order two — sold each. Some dealer charts note radar realignment if adaptive cruise is equipped.
Check Bilstein B8 5100 (maker)
Check Bilstein 24-352925 (truckspring)
Figures below come from maker and dealer application pages. No prices on this page.
| ICON IVD6120 | Bilstein B8 5100 24-352925 | |
|---|---|---|
| Who for | 2021–2025 F-150 (maker family 2004–2026), 2WD or 4WD | 2021–2026 F-150 4WD |
| What it is | 2″ front spacer on the factory strut | Front ride-height leveling shock |
| Lift | 2 in front | 0–2.5 in with OE springs |
| Drive | 2WD / 4WD (maker) | 4WD only (this PN) |
| Tires | 33 in with proper clearance | Tire size is not the buy story for this Bilstein shock |
| Qty | Kit as sold | Sold each — need qty 2 |
| Not this part | Tremor. Raptor. Factory electronic. Bilstein shock | 2WD. CCD. Raptor. ICON spacer |
| After install | ADAS recalibration (ICON page) | Radar realignment note on some dealer charts if adaptive cruise |
| Buy on this page | Shop on Amazon + ICON maker site | Bilstein maker site and truckspring dealer link |
| Not this pick | Full lift. Rear block. Every-truck kit | Same |
Years: This guide covers 2021–2025 F-150. ICON lists the same IVD6120 spacer family through 2026 on the maker page — same part family, no extra SKU for 2026 here.
ICON: 2004–2026 F-150 2WD/4WD per maker. Skip Tremor. Skip Raptor. Skip factory electronic suspension. 33-inch tires need clearance.
Bilstein 24-352925: 2021–2026 F-150 4WD, 0–2.5″ with OE springs, without CCD, exclude Raptor. Sold each — qty 2. This part number is 4WD only.
Not a full lift — front level only. Not rear blocks.
Full lift shopping. Stage kits and long-travel systems are a different page.
Rear blocks as a leveling kit. This page is front spacer or front ride-height shock.
Tremor / Raptor / CCD. Wrong application for both cards here.
Bilstein 2WD on 24-352925. This part number is 4WD only. If you need 2WD, match a verified 2WD application elsewhere.
Ordering one shock. Bilstein 24-352925 is sold each — buy two.
ICON IVD6120 if you want a 2-inch front spacer on the factory strut. Bilstein B8 5100 PN 24-352925 if you want a front ride-height shock (0–2.5″ with OE springs) on a 4WD truck without CCD. They are not the same part.
No. The ICON page says it will not fit an F-150 Tremor or an F-150 Raptor. It also will not work with factory electronic suspension.
No. The application for 24-352925 is without CCD. Skip this part number if the truck has factory electronic / CCD suspension.
Spacer (ICON IVD6120) if you want to keep the factory strut and bolt a 2-inch lift on top. Ride-height shock (Bilstein 24-352925) if you want to replace the front shocks and set height on the shock. Same job family — different parts.
ICON says ADAS needs a recalibration after the spacer goes on. Bilstein dealer charts may note front radar realignment when adaptive cruise is equipped. Plan for it before you drive off the rack.
4WD only on this page. Part number 24-352925 is 4WD only. If you need a 2WD shock, match a verified 2WD application — not this part number.
Qty 2. The shock is sold each. A front pair is two shocks.
This guide is for the 2021–2025 F-150. For Bilstein series vs ICON spacer across trucks, see best truck leveling kit.
Last updated October 1, 2026. Author: TruckDaily.