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
- Piggyback reservoir design improves heat dissipation to reduce shock fade during prolonged use
- 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
- 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)
APPLICATION NOTE #3: Will not fit F-350/F-450 cab & chassis models
APPLICATION NOTE #150: Shocks are fully serviceable
TECH NOTE: Compatible with 0-3" of rear lift over stock
Specifications
| Cylinder Color |
Gray |
| Cylinder Diameter |
2.5 IN |
| Cylinder Material |
Aluminum |
| Damping Type |
Oil |
| External Reservoir |
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 |
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 |
| Service Parts |
252002 - UNIVERSAL SPANNER WRENCH (2.0/2.5/3.0) |
| Shaft Diameter |
0.875 IN |
| Shaft Material |
Chrome |
| Valving Type |
Digressive |
| Active or Passive Suspension |
Passive |
| Add-On Part |
252008 - 2.5 X 13 SHOCK BOOT BLACK (PAIR) |
| Adjustable Compression |
No |
| Adjustable Damping |
No |
| Adjustable Rebound |
No |
Documents
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.