Aftermarket Shocks for Power Wagon (Fox 2.5 / King 2.5 / Bilstein 5160)

The factory Power Wagon Bilstein 5100-class shocks are tuned for stock 33" tires and stock weight. They're fine for daily and mild trail use but they fade fast under desert running or sustained off-road speed. Three upgrade paths:

Bilstein 5160 reservoir shocks ($900 for all four) — the value upgrade. Same 46mm body as the factory shock but with a remote reservoir for added oil capacity and fade resistance. Bolts in like a factory replacement. About 70% of the performance of a Fox 2.5 for 50% of the price. Best for moderate trail + occasional desert.

Fox 2.5 Performance Series with reservoir ($1,800) — true 2.5" body shocks, internal floating piston, remote reservoir. Big step up in damping control and ride quality, especially on washboard and rocky high-speed terrain. The mainstream "I'm serious about this truck" upgrade.

King 2.5 OEM Performance Series ($2,800) — premium tier. Adjustable compression damping (24-click), serviceable internals, longer service intervals than Fox in dusty desert use. The pick if you wheel hard and want to tune your own damping curve.

Carli Performance 2.5 ($2,200) — bundled with Carli lift kits, tuned specifically for the Power Wagon's solid-axle geometry. The choice if you're running a Carli Pintop or Backcountry lift.

Notes for the install: the Power Wagon's front coilover bolts are notorious for rust seizure on 2014-2018 trucks. Plan on penetrating oil 24 hours before, and have an impact wrench available. The 22mm upper nut on the front strut tower is the worst — many owners snap the stud trying to break it loose with a hand wrench.

For all four shock options, do front AND rear together. Mismatched damping (new fronts, tired rears) makes the truck feel weird and accelerates wear on the new shocks.

All four options are a bolt-in shock swap — no fabrication — but the Power Wagon's front coilover assembly makes this a real afternoon job, not a 30-minute one.

1. Soak the front lower shock bolt and the 22mm upper strut nut in penetrating oil 24 hours ahead. On 2014-2018 trucks these are the seizure points; budget the extra day.
2. Support the front lower control arm with the floor jack before unbolting anything — the coil is captive on the front strut, so the arm carries spring load. Lower it slowly after the lower bolt is out.
3. Break the upper nut with an impact wrench, not a hand ratchet. Owners routinely snap the stud trying to muscle it loose by hand; the impact's hammering action is what frees a seized stud without shearing it.
4. Transfer the spring to the new front strut on a compressor rated for the load, or have a shop do the spring swap — a captive 2,000+ lb coil is the one part of this job that earns professional respect.
5. Rear shocks are far less stubborn: two bolts each, 21mm. Torque the lower to factory spec and re-check the uppers after a shakedown drive.
6. Do front AND rear in the same session. Mixing new fronts with tired rears makes the truck feel disconnected and accelerates wear on the new units.

For a step up to a taller ride height, the shock change pairs with a lift kit — see the pw-lift-aev-dualsport and Carli paths, which spec their own valving.

The biggest mistake is ordering reservoir shocks without checking frame clearance on an already-lifted truck — Fox and King 2.5 remote reservoirs need a clear routing path, and a 3"+ lift changes where the hose lands. Mock up the reservoir bracket before committing.

The second is valving mismatch. A non-Carli shock dropped onto a Carli or AEV spring without the matching tune will ride harsher or wallow depending on the pairing; follow the shock maker's preload and valving recommendation for your exact spring, or expect to chase ride quality afterward. And if a front coilover bolt does seize past the point of penetrating oil, stop before you snap it — heat from a small torch on the bracket (not the stud) usually wins where brute force loses.

Why it works

• Bilstein 5160 is a true bolt-in upgrade with a meaningful improvement
• Fox 2.5 / King 2.5 change the character of the truck for desert and washboard
• All four options are rebuildable (Fox/King especially — long-term value)
• Required for any 3"+ lift kit (factory shocks aren't long enough)

Trade-offs

• Rusty hardware on 4th-gen trucks is the install bottleneck
• King 2.5 at $2,800 is premium pricing
• All non-Carli options need Carli's tuning recommendations to match a specific lift; otherwise expect to adjust spring preload
• Fox/King reservoirs need clearance on the frame — check fitment on lifted trucks before ordering

Tools required

• floor jack rated to 3500 lb
• jack stands
• metric sockets (18mm, 21mm, 22mm)
• torque wrench (250+ lb-ft capable)
• PB Blaster

Parts

Sources

• Bilstein 5160 series — remote-reservoir monotube overview
• Fox 2.5 Performance Series shocks — product line
• Carli Suspension — Ram 2500/Power Wagon shock tuning notes

Related

• AEV DualSport 4.5" Lift — Power Wagon (Full Short-Arm, L6)
• AEV DualSport 4.5" Lift — Power Wagon (Full Short-Arm, L6)
• All Ram Power Wagon guides & tools
• Browse the full DIY database

Written and maintained by an AZ wheeler and driveway wrencher. How we source guides. Always cross-reference your factory service manual — modifications affect vehicle safety and warranty. Work at your own risk.