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King Steering Stabilizer Shocks w/ IFP
King Steering Stabilizers
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Sold Individually
Price: $274.95

Availability: *IN STOCK (Limited Supply)*
Product Code: KING-STEER

Shock Travel

- Current Stock Listed as "(INV: # )". B/O = Backorder
- OEM Stabilizers require OEM rod ends, spacers, and valving below.

Shock Options

- View Rod End Types

*Due to Extended Lead Times, Some Custom Options are Temporarily Unavailable.*


Add King Inflation Adapter (RK1120-104) [+$55.00]
- This adapter is required for custom tuning your stabilizer.

Shock Valving:

-Stabilizers ship charged with 45 PSI standard.

*For custom valving consultations, please briefly describe your vehicle and application above. Once the order is received, we will request additional information and contact you for a one-on-one consultation to confirm the specifications and shock valving for your application.
*Consultation fees are non-refundable once that service is provided.


King Steering Stabilizers are uniquely valved to work evenly in both directions to prevent unnecessary strain on your steering system and feature an internal floating piston (IFP) to separate the nitrogen pressure from the oil and smaller diameter shafts to reduce shaft pressure. Other than their unique piston head and valves, these steering stabilizers are built with the same parts and to the same specifications as King's performance racing shocks. They are designed to handle the load of oversize tires and are fully serviceable, rebuildable, and tunable to last a lifetime.

International Shipping International Customers - Filthy Motorsports Ships Worldwide
Contact us about affordable international shipping on all King Shocks.
For more information see: Off-Road and 4x4 Parts Exporting

Standard Sizes and Options
King's steering stabilizers feature a full 2.0 shock body cylinder and contain the same oversized piston and internal components found on King 2.0 Smoothie shocks. They are available with 6, 8, and 10 inches of shaft travel to work with most popular and custom applications. They can be valved for single stabilizer applications with a bit of positive pressure or dual opposing configurations that offer amazing self-centering characteristics.

Shock Specifications
Filthy Motorsports offers the following sizes of King steering stabilizers:

King Part # Body Dia. Travel Shaft Dia. Compressed Extended

2.0" 6" 1/2" 12.260" 18.260"
STNR080 2.0" 8" 1/2" 14.660" 22.660"
STNR100 2.0" 10" 1/2" 17.060" 27.060"

20001-152 2.0" Jeep JK/JKU 2.0" OEM 13.70" 21.00"
20C001-204 2.0" Jeep JL/JT 2.0" OEM 13.70" 21.00"
20C001-201 2.0" Toyota LC80 2.0" OEM 16.40" 25.90"
20C001-202 2.0" Nissan Patrol Y61 2.0" OEM 13.70" 21.00"
20C001-203 2.0" 08+ Ford Super Duty 2.0" OEM 17.00" 27.00"
20C001-206 2.0" 14+ RAM 2500 2.0" OEM --" --"

*As of 2018 all steering stabilizers use 1/2" shafts.
*Compressed and extended shock lengths are measured from eye-to-eye.

Custom Built and Valved by King Racing
Unfortunately, most steering stabilizers that you'll find on-line or in a catalog come with generic valving. If you get one that is too stiff, it will put an unnecessary strain on your steering mechanism, while one that isn't strong enough will have no effect at all. That is why, like all King shocks, these steering stabilizers are custom built to your needs. Use the "Shock Details" text box above to tell us as much as you can about your application and we'll work directly with King to valve them specifically for your vehicle. Custom built shocks are a free service offered by Filthy Motorsports and it will only add a few days to your shipping time.

Servicing, Tuning, and Rebuilding
These steering stabilizers, like all of King's shocks, are completely serviceable, tunable, and rebuildable with the simplest of hand tools. We offer the full range of replacement parts for King shocks and keep a majority of them in stock and ready to go. This way, if you ever decide to upgrade to larger tires and need a stiffer stabilizer, all you need to do is change the valve shims. Filthy Motorsports will gladly send you the parts for you to do the work yourself, or you can bring us (or send us) your shocks and we'll service them for you.

New! How to Service and Rebuild King Shocks: King Shock Rebuild Instructions & King Shock Replacement Parts

Note: Some shocks ship uncharged. Nitrogen charging is available free to local customers.

King Shock images are © Copyright King Shock Technology, used with permission.
Additional images and product descriptions are © Copyright Filthy Motorsports, LLC.
  • Cadmium plated chromoly body, precision bored and honed
  • Heat treated, hard chromed, micro polished 1/2" shaft
  • Aircraft quality billet aluminum components
  • 6061 aluminum alloy, balanced flow piston
  • Heat treated stainless steel valve shims
  • Rulon composite piston wear band
  • Heavy duty, long wearing urethane seals
  • 1/2" Teflon lined stainless steal spherical bearings
  • Fully rebuildable an serviceable
  • Made in the USA

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 1 Write a review.

  2 of 2 people found the following review helpful:
5 of 5 Impressive Improvement for RVs May 4, 2018
Reviewer: Paul from CO  
The usual stabilizer application in compact cars and SUVs reduces the impact of the road into the steering system. A stabilizer can also reduce vibrations caused by worn out joints, tie rod ends, and bearings. Large, boxy vehicles like motorhomes with heavy engines have additional steering problems with heavy side winds and long rear overhangs behind the rear axle.
My motorhome is 32 feet long and the overhang behind the rear axle is 11 feet. At 9 feet tall, the tail has a very large cross section that, in a cross wind of 30 MPH, equals a side force of over 400 pounds that attempts to turn (pivot) the front of the motorhome. Correcting such forces through the steering wheel is demanding on its own, but that's not all. Additional corrections must be made to deal with sudden wind interruptions when passing buildings, underpasses, and semi-trucks.
I installed a pair of King 2.0 x 12" steering stabilizers with custom valving and mounted them against each other (opposed). Each shock absorber is pressurized, which makes it biased against compression. The opposed configuration compensates the bias, creating a center balanced setup the effectively self-centers the motorhome. I found the stabilizers to be a huge improvement. Driving between 60 to 70 MPH, road conditions, wind, and traffic disruptions feel much more controlled and sudden movements and erratic directional changes have become much easier to correct and dampened at the steering wheel.
Overall, I would highly recommend these steering stabilizers to anyone and everyone with a motorhome, RV, or large truck.

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