IRONMAN 4X4 IM2.5
IM2.5 Lift Kits
Suspension Built For Performance
Fits 2021+ Ford F-150.
The IM2.5 Monotube Suspension delivers an exceptional upgrade in comfort, control and capability. Advanced monotube technology, precision valving and superior heat management help keep the F-150 composed on pavement and demanding trail conditions.
THE CAP-IT TAKE
A Complete F-150 Suspension Upgrade
Most adventure trucks still spend plenty of time on pavement. Ride quality, steering confidence and everyday control matter just as much as capability once the road gets rough.
The IM2.5 system is built for that balance. Its large-body monotube dampers increase oil volume and heat-management capacity, while application-specific valving helps deliver predictable control.
With the current Stage 2 special, the Pro Forge upper control arms are included free and the complete kit is discounted another 15%. With only one Medium and one Heavy Stage 2 kit in stock, this is the configuration we'd buy.
Why IM2.5 Is Different
Large-Body Monotube Design
The 2.5-inch monotube platform provides increased oil capacity and strong heat-management capability for consistent damping over long distances and rough terrain.
Precision Valving
Vehicle-specific damping is designed to improve stability, body control and driver confidence.
Adjustable Front Coilovers
IM2.5 front coilovers provide lift and damping control at the front of the F-150 as part of the matched suspension package.
Matched Front + Rear Package
Front coilovers, rear IM2.5 shocks, rear leaf springs and required fitment hardware are selected as one complete suspension system.
LIMITED-QUANTITY STAGE 2 SPECIAL
FREE UPPER CONTROL ARMS + 15% OFF
Stage 2 Medium: Regular $4,210. Sale $2,905. SAVE $1,305.
Stage 2 Heavy: Regular $4,355. Sale $3,025. SAVE $1,330.
Get the complete Stage 2 system, including Pro Forge Upper Control Arms, for less than the regular price of the equivalent Stage 1 kit. Limited to current Cap-it inventory: one Medium and one Heavy Stage 2 kit available.
Choose the Right Rear Load Rating
MEDIUM LOAD
Best for Typical Accessory Loads
Rear leaf spring: FOR014B
0-660 lb additional payload. A strong all-around choice for trucks with normal permanent accessory weight.
HEAVY LOAD
Built for More Constant Rear Weight
Rear leaf spring: FOR014C
660-1,760 lb additional payload. Choose Heavy Load when the truck carries greater permanent rear accessory weight.
Unsure which spring rate is right? Contact Cap-it before ordering and we can help match the kit to your build.
Exactly What's Included
Stage 1 and Stage 2 use the same core IM2.5 suspension components. Stage 2 adds the Ironman Pro Forge Upper Control Arm Kit.
| Component | Part Number | Qty | Stage 1 | Stage 2 |
|---|---|---|---|---|
| IM2.5 Front Coilover | 71-057-887 | 2 | Included | Included |
| IM2.5 Rear Shock | 73-057-888 | 2 | Included | Included |
| Rear Leaf Springs | FOR014B / FOR014C | 2 | Included | Included |
| Rear Polyurethane Spring Bushing Kit | 1226UK | 1 | Included | Included |
| Rear Leaf End Bolt | 1227 | 2 | Included | Included |
| Rear U-Bolt Kit | 449UBKL | 2 | Included | Included |
| Alignment Wheel Kit | 77006K | 1 | Included | Included |
| Rear Bump Stop Spacer Kit | 77009K | 1 | Included | Included |
| Pro Forge Steel Upper Control Arm Kit | UCA109S-9 | 1 | Not Included | Included |
VEHICLE FITMENT
Built for the Ford F-150
- Ford F-150: 2021+
Suspension selection should be based on vehicle configuration, permanent accessories and the additional weight carried by the truck.
+Specifications & IM2.5 Technology
- 2.5-inch large-body monotube damper platform
- Vehicle-specific precision valving
- 3-inch front lift configuration
- Medium front spring configuration: 0-220 lb additional payload
- Choice of Medium or Heavy rear leaf spring set
- Stage 2 adds Pro Forge upper control arms
+Ordering, Availability & Shipping
The promotional Stage 2 price is limited to current inventory: one Medium-rear and one Heavy-rear kit.
+Frequently Asked Questions
What is the difference between Stage 1 and Stage 2?
Stage 2 includes everything in Stage 1 plus the Ironman Pro Forge Upper Control Arm Kit.
What is the current Stage 2 promotion?
The Pro Forge upper control arms are included free, and the complete Stage 2 kit is discounted an additional 15% from the equivalent Stage 1 price.
What is the difference between Medium and Heavy rear springs?
Medium is designed for 0-660 lb of additional payload. Heavy is designed for 660-1,760 lb of additional payload.
Is professional installation recommended?
Yes. Suspension installation should be completed by a qualified installer and followed by a professional wheel alignment.
WHY BUY IRONMAN 4X4 FROM CAP-IT?
Build the Suspension Around the Truck You Actually Drive.
Cap-it has specialized in truck accessories, suspension and adventure equipment since 1977. We understand that suspension has to work with the complete vehicle, including the accessories and weight you carry every day.
Choose the right rear load rating for your F-150 and take advantage of the Stage 2 special while the remaining in-stock kits last.