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Reliable Rear Axle Damping for the Classic F-250
The Skyjacker M2079 ADX M2.0 Adventure Series rear shock modernizes the ride behind the cab on 1980-1986 Ford F-250 trucks built before the Super Duty era. The M2079 uses an impact extruded CNC machined T6061-T6 aluminum monotube body that dissipates heat faster than steel shocks, so the M2079 keeps its damping consistent whether hauling a load or running empty down the highway. An internal floating piston inside the M2079 separates nitrogen gas from oil, eliminating cavitation and fade under repeated hard use. Running the M2079 out back keeps the rear axle settled and reduces unwanted axle hop on these classic work trucks.
Key Features
- Impact extruded CNC machined T6061-T6 aluminum monotube body
- Full displaced valving on the M2079 inspired by off road racing
- Internal floating piston separates nitrogen gas from oil
- Large 53.5mm (2.11 inch) OD body with 46mm (1.81 inch) bore
- Teflon banded piston for smooth, consistent reaction
- Clear anodized polished aluminum finish on the M2079
- Factory set, vehicle specific dampening tune
- Rear position, direct bolt on installation
Fitment Table
| Year Range | Make | Model |
|---|---|---|
| 1980-1986 | Ford | F-250 |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | M2079 |
| Position | Rear |
| Body Material | T6061-T6 Aluminum |
| Body Diameter | 2.11 in (53.5mm) |
| Bore Size | 1.81 in (46mm) |
| Warranty | 2 Year Limited |
| UPC | Not Published |
What's Included
- One Skyjacker M2079 ADX M2.0 rear shock absorber
- Mounting hardware where applicable to the M2079 application
- Manufacturer installation instructions
About Skyjacker
Skyjacker has engineered suspension systems in Louisiana since 1970, building a reputation for durable, American made lift kits, shocks, and steering components. The ADX M2.0 Adventure Series, including the M2079, reflects decades of off road racing derived engineering brought to daily driven trucks and SUVs.
FAQ
What is the M2079?The M2079 is a Skyjacker ADX M2.0 Adventure Series aluminum monotube rear shock absorber engineered for 1980-1986 Ford F-250 applications, built before the Super Duty era.
Is the M2079 sold as a single shock or a pair?The M2079 is sold individually. Two units are required to replace both rear shocks.
What is the warranty on the M2079?The M2079 carries a 2 year limited warranty from Skyjacker against defects in materials and workmanship.
Can the M2079 be used with a lifted suspension?The M2079 is factory tuned for the specified F-250 application. Check the Skyjacker fitment guide to confirm the M2079 matches the intended lift height.
What material is the M2079 body made from?The M2079 uses an impact extruded CNC machined T6061-T6 aluminum monotube body for improved heat dissipation over steel bodied shocks.
Does the M2079 require any special tools to install?Standard hand tools are sufficient to install the M2079. A jack and jack stands are recommended for safe rear end support during installation.
Is the M2079 gas charged?Yes, the M2079 uses high pressure nitrogen gas paired with an internal floating piston for consistent damping performance.
Does the M2079 fit 2WD and 4WD F-250 models?Confirm axle configuration against the OEM shock specification for your specific F-250 before ordering the M2079.
Install Instructions
- Park the F-250 on level ground, set the parking brake, and chock the front wheels before working on the M2079 installation.
- Raise the rear of the vehicle and support the frame rails on jack stands at the points specified in the OEM service manual.
- Remove the rear wheels and place a jack under the rear axle housing to relieve suspension tension.
- Remove the factory rear shock and retain any reusable hardware for the M2079 installation.
- Connect the M2079 at the upper shock mount and secure without fully tightening.
- Connect the M2079 at the lower mount using OEM hardware, again leaving it snug but not fully torqued.
- Reinstall the rear wheels and lower the vehicle to the ground so full weight is on the tires.
- Torque the upper and lower M2079 mounting hardware to OEM specifications, then cycle the suspension and check for clearance issues.
Prop 65 Warning
WARNING: This product can expose you to chemicals including chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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