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Cylinder Assist® Axle Kit - Dodge/RAM 2500/3500 (2003-2022)

Cylinder Assist® Axle Kit - Dodge/RAM 2500/3500 (2003-2022)

$525.00
$525.00
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Part Number: CAK855

Vehicle/Model Year

*Requires a ported steering gear. This kit will not work without one.*

Big tires and heavy trucks don’t play nice with stock steering. That’s where this Cylinder Assist Axle Kit comes in. It takes the fight out of the wheel, keeps your truck tracking straight, and saves your steering box from a short, miserable life.

This kit is built around our proven Cylinder Assist system—the same setup hardcore off-roaders and work trucks have trusted for years. Whether you’re running an early Dodge (2003–2013) or a newer RAM (2014–2022), we’ve got you covered with the right hoses, mounts, and hardware for a clean install.

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About:About:

Why you’ll love it

  • Less arm wrestling – Tames kickback and wander on big tires.
  • Built for work and play – Tow, haul, or hit the trail without the fight at the wheel.
  • Bolt-on or custom-friendly – Year-specific kits for a clean fit.

Tech InfoTech Info

Heads‑up for installers

  • Requires a ported steering gear. This kit will not work without one.
  • Center the cylinder before final tighten—mid-stroke with the wheels straight.
  • Cycle it lock-to-lock and stuff the suspension to check hose clearance.
  • Torque and re-torque after your first shake-down run.
  • Alignment check after install keeps things tracking true.

Ideal for

  • Trucks on 35–40 inch tires
  • Heavy tow rigs and work trucks
  • Weekend warriors who hate steering wander

What’s included

2003–2013 Dodge 2500/3500 (CAK855) 

  • Cylinder Assist – Single-Ended – 1.5" × 8.0" (SC2200)
  • Cylinder Assist Hose Kit – (3x 90°, 1x 45°, 6 ft Hose) (HK2015)
  • Cylinder Assist Rod End Kit – 3/4" Female, 5/8" Male – 5/8" Ball – No Hardware (SCRK1)
  • PSC Tru Blue® Power Steering Fluid – 4 Quart Pack (FL-SWE715-4PAK)

2014–2022 RAM 2500/3500 (CAK858) 

  • Cylinder Assist – Single-Ended – 1.5" × 8.0" (SC2200)
  • Hose Kit – Cylinder Assist, 2014+ RAM 2500/3500 (HK2062)
  • Bracket – Assist Cylinder Mounting, 2019–2021 RAM 2500/3500 (MB34K)
  • Rod Ends & Hardware:  

REXFR10 – Female Shank LH Thread – 3/4-16 FR × 5/8" Ball 

REXMR10-SS – Rod End, M-R, 5/8-18 × 5/8, Shortened .750" 

  • FSNJ-5/8-18RH – 5/8-18 RH Jam Nut (x2)
  • PSC Tru Blue® Power Steering Fluid – 4 Quart Pack (FL-SWE715-4PAK)
California Prop 65 Warning

California Prop 65 Warning

This product can expose you to chemicals including lead and di (2-ethylhexyl) phthalate, which are known to the State of California to cause cancer, birth defects or other reproductive harm.

For more information, go to www.P65Warnings.ca.gov