ICON Vehicle Dynamics 37705P - 99-25 FSD 0-3" REAR 2.5 VS PB PAIR
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ICON 2.5 Series shocks are designed to give you outstanding performance off-road and a smooth ride on the street. With a vehicle-specific design, these shocks are configured specifically for each application in both length and damping tune.
ICON’s 2.5 Aluminum Series shocks are designed and built to give your vehicle outstanding performance off-road and a smooth ride on the street. With a truly vehicle-specific design, these shocks are configured specifically for each application in both length and damping tune. Featuring one-piece impact extruded aluminum cylinders, these 2.5 Aluminum Series shocks offer lighter weight, improved corrosion resistance, and a more uniform finish than traditional plated steel cylinders. Like all ICON shock absorbers, these 2.5 Aluminum Series shocks are 100% rebuildable and 100% revalveable. For piggyback and specific remote reservoir applications, ICON’s unique use of a 6061 billet aluminum manifold a few inches below the top cap of the shock creates an internal “Bump Zone” that when used creates an additional 20% of damping force. This additional force helps prevent harsh bottom-out conditions and controls the suspension effectively when compressing at high velocity. If you are looking for a more user-defined tune, consider looking into the Compression Damping Control Valve (CDCV) shocks.
Features & Benefits
- Piggyback reservoir design improves heat dissipation to reduce shock fade during prolonged use.
- 100% Rebuildable
- 100% Revalveable
- All ICON 2.5 Series Piggyback and Remote Reservoir shocks can be upgraded to ICON’s Compression Damping Control Valve (CDCV)
- One-piece impact extruded aluminum cylinders offer excellent corrosion resistance and consistent finish
- Premium grade 5WT shock oil for consistent suspension damping along a wide temperature range
- Double-sealed Schrader caps reduce risk of damage
- One-piece digressive piston design with vehicle-specific valving for unsurpassed performance and ride quality on and off-road
- 7/8” diameter induction hardened, chrome plated shock shaft
- PTFE lined spherical bearings and application specific mounting hardware
- 6061 aircraft grade aluminum CNC machined components with anodized finish
- ICON’s internal “Bump Zone” increases damping by 20% to provide more control as the shock approaches full compression
Specifications
| AAP_UDA_12 | EA |
| AAP_UDA_22 | 1 |
| AAP_UDA_4 | 55 |
| Active or Passive Suspension | Passive |
| Add-On Part | 252008 - 2.5 X 13 SHOCK BOOT BLACK (PAIR) |
| Adjustable | No |
| Adjustable Compression | No |
| Adjustable Damping | No |
| Adjustable Rebound | No |
| Boot Included | NO |
| Bore Diameter | 2.25 IN |
| California Proposition 65 | WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. |
| Cylinder Color | Gray |
| Cylinder Diameter | 2.5 IN |
| Cylinder Material | Aluminum |
| Damping Type | Oil |
| External Reservoir | Yes |
| Gas Charged | Yes |
| Grade Type | Performance |
| Includes Bump Stop | No |
| Lower Mount Type | Eyelet |
| Mounting Hardware Included | Yes |
| Reservoir Type | Piggyback |
| Service Parts | 257342 - 7/8 SHAFT 16.85 OAL, 12.00 TRAVEL |
| Service Parts | 252011 - 2.5 PIGGYBACK/REMOTE RESI/BYPASS REBUILD KIT |
| Service Parts | 252002 - UNIVERSAL SPANNER WRENCH (2.0/2.5/3.0) |
| Shaft Diameter | 0.875 IN |
| Shaft Material | Chrome |
| Shock Absorber Body End Measuring Point | Center of Eylet |
| Shock Absorber Rod End Measuring Point | Center of Eylet |
| Title | ICON 1999-2025 Ford F-250/F-350/F-450 Super Duty, 0-3” Lift, Rear, V.S. 2.5 Aluminum Series Shocks, Piggyback Reservoir, Pair |
| Tube Outside Diameter | 2.5 IN |
| Upper Mount Type | EYELET |
| Valving Type | Digressive |
| Service Parts | 252001 - 2.5 FIXED SPANNER WRENCH |
| Service Parts | 254100G - 1 GALLON ICON PERFORMANCE SHOCK OIL |
| Service Parts | 252003 - SEAL INSTALL TOOL 2.5/3.0 |
| Service Parts | 191015 - 10" FINNED RESI UPGRADE KIT |
Installation Guide: Download PDF
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