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  Store > King OEM Shocks >

King Shocks Custom Length | 4Runner/FJ/GX Rear 2-3" Lift | 2003 - 2023
Photo of Toyota 4Runner Rear King Shocks
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Price: $1,399.95

Availability: Special Order 6 Weeks

Part Number:

Rear Shock Options

Add Compression Adjusters (A) [+$217.55]

Add 2" Rear Bump Stop Spacers [+$95.00]

Add BlackGate Rear KDSS Spacer [+$175.00]

Shock Valving:

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Returns: A 20% restocking fee applies to any authorized returns. Custom and special order shocks are non-returnable and non-refundable.

Sales Tax: King Shocks are only taxable when shipping to CO and WA, however, expedited orders may be taxable to AZ, CA, CO, NV, TX, UT, and WA. If sales tax is not calculated correctly by our website, we will adjust it upon order review.

Description Compatibility Part Numbers

2003-2023 4Runner / FJ / GX Custom Length Rear Shocks
The following shocks will fit 2003 to 2023 Toyota 4Runner, FJ, and Luxus GX Models with 2-3" of rear lift:

FM525-01 Custom Length Rear 2.5" Shocks with Remote Reservoirs
FM525-01A Custom Length Rear 2.5 Shocks w/ Remote Reservoirs and Compression Adjusters

Custom length for vehicles with 2-3" rear lift springs.
Requires 2" bump stop spacers or 2" taller aftermarket bump stops.
Some heavier rear springs may require internal limiting spacers to be installed.

Important Vehicle Specific Notes and Recommendations

Toyota 2003 to 2023 Toyota 4Runners, FJ Cruisers, and Lexus GX Models feature 8.5" of available rear suspension travel from the factory and are typically set up with 5" of available up-travel at ride height. This is ideal for stock height vehicles as even when loaded and squatted 1" you would still have 4" of available up-travel. Once the rear end is lifted more than 1.5" over stock height, down-travel gets reduced to 2" or less which results in the suspension "topping out" or overextending, thus causing poor performance and ride quality. Therefore, we want to trade 2" of up-travel to gain 3" of down travel so we use 2" bump stop spacers and longer rear shocks. Not only does this re-position the sweet sport closer to the center of travel, but it gains us an inch more of usable travel.

For vehicles running 33" / 285 tires or larger, 2" bump stop spacers are required to prevent the tires from contacting the rear fenders. If your vehicle is already equipped with 2" bump stop spacers (or 2" taller bump stops) and you are running the stock length King rear shocks (purchased from another vendor) be aware that this results in a net-loss of 2" of up-travel and reduces your rear travel to only 6.5". Any time a rear 2" bump stop spacer is used, these custom length rear shocks are required.

KDSS equipped vehicles will require rear KDSS spacers for the KDSS system to work correctly. Lexus GX models with air-ride will require a rear coil spring conversion to work with King rear shocks.

King OEM Performance Shock Upgrade Kits are direct bolt-on replacement shocks and/or coilovers for your vehicle and come custom tuned for the ultimate balance of on-road handling and off-road performance. They include all of the necessary hardware you need for a bolt-on installation that can easily be done over the weekend. Custom length shafts and cylinders are available to work with any brand and size lift kit. Additional options include compression adjusting reservoirs, custom colors, internal or external bypass tubes, and race-spec valving.

Servicing, Tuning, and Rebuilding
All OEM upgrade shocks and coilovers are hand-built with the same parts as all of King's other Performance Race Series shocks. They are completely serviceable, tunable, and rebuildable to last a lifetime and it only requires a few simple hand tools, a few hours, and the appropriate King replacement parts from Filthy Motorsports. If you prefer not to do the work yourself, you can always bring (or send) your shocks to us and we will service them for you.

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

  • Custom built and valved for your application
  • Precision bored and honed, cadmium plated chromoly body
  • 3/4" or 7/8" hard chromed, heat treated, micro polished shaft
  • Aircraft quality billet aluminum components
  • Heat treated 6061 aluminum alloy piston
  • Heat treated stainless alloy valve shims
  • Teflon bronze composite wear band
  • Long lasting urethane seals
  • Hard anodized aluminum reservoirs
  • Replaceable Teflon lined spherical bearings
  • Fully rebuildable and serviceable
  • Made in the USA

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 2 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Very happy! November 9, 2022
Reviewer: J.H. from Nevada  
I just got done doing a big off road camping trip with the new Kings in the rear and loved them! No more fade, no more topping out on small stuff. Very happy with them!

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  0 of 0 people found the following review helpful:
5 of 5 Thank you! April 21, 2022
Reviewer: Scott from Neenah, WI  
Moving forward I will be buying ALL suspension components from you!! I wish you would have had the front CO’s in stock this time.  Thanks again for your help!!

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