JBA

1998 Toyota 4Runner Upper Control Arm Collection

Find the right 1998 Toyota 4Runner upper control arm to improve your SUV’s ride quality and suspension performance. Explore options designed for reliable fit and durability whether you drive on-road or take your 4Runner off the beaten path.
Find the right 1998 Toyota 4Runner upper control arm to improve your SUV’s ride quality and suspension performance. Explore options designed for reliable fit and durability whether you drive on-road or take your 4Runner off the beaten path.

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1 Item

  • JBA STD High Caster Upper A-arms for Toyota Tacoma 1996-2004
    Pre-Assembled Kit - fits lift type
    Spring Lift or Leveling Kit [1 to 3.5-inch lift]

    Spacer Lift, Leveling kit, and Spring lift kit

    These kits cause the upper arms to angle downward toward the ball joints. The Leveling kit or strut lift removes the factory rake angle by lifting the front level with the rear of the vehicle.

    Spring kits remove the factory rake angle and lift the rear of the vehicle about 1.5" - 2.5"
    Spring Lift with Cradle Drop Kit

    Spring lift kit with Cradle Drop Kit

    These kits cause the upper arms to angle downward toward the ball joints. The cradle drop lift, cross-member drop, or drop bracket lift kit with spring kits.

    Example: 4" cradle drop lift with a 2" spring/coil over lift = 6" lift kit. 6" cradle drop lift with a 2" spring/coil over lift = 8" lift kit. When the mounting holes are offset by 4" and the kit is a 6" kit, the other 2 inches are made up from the strut lift or spring lift.
    JBA STD High Caster Upper Control Arms for Toyota Tacoma, 4Runner 1996-2004 (1 to 3.5 inch lift)
    $616.00
See What Our Customers Have Built!
Wifes Rig

JBA HD High Caster Upper Control Arms for Toyota Tacoma, 4Runner, FJ Cruisers, Lexus GX470, Lexus GX460 (1 to 3.5 inch lift)

Lift Type: Spring Lift or Leveling Kit
Lift Height: 3"
Tire Size: LT285/75 R17
~33.8” x 11.2” x 17”
Read this Build
07 GX470

JBA HD High Caster Upper Control Arms for Toyota Tacoma, 4Runner, FJ Cruisers, Lexus GX470, Lexus GX460 (1 to 3.5 inch lift)

Lift Type: Spring Lift or Leveling Kit
Lift Height: 3"
Tire Size: P285/75 R17
~33.8” x 11.2” x 17”
Read this Build
2015 Toyota Tacoma 4x4 - Game Changer for Big Lifts!

JBA UCAs for Toyota Tacoma, 4Runner, FJ Cruisers, Lexus GX470, Lexus GX460 2003-2023 (4 to 12 inch lift)

Lift Type: Both Spring Lift and Cradle Drop
Lift Height: 11"
Tire Size: 343/0 R35
35x13.5 R35
Read this Build
2016 Toyota Tacoma TRD Sport Overland Build

JBA HD High Caster Upper Control Arms for Toyota Tacoma, 4Runner, FJ Cruisers, Lexus GX470, Lexus GX460 (1 to 3.5 inch lift)

Lift Type: Spring Lift or Leveling Kit
Lift Height: 3"
Tire Size: LT315/70 R17
~34.4” x 12.4” x 17”
Read this Build
View All Customer Builds
A Summary of the Benefits
Made in usa
  1. 1
    Ball joints are mounted on an angle to line up with steering knuckle

    No more premature ball joint failure!

  2. 2
    Replaceable ball joints

    You can replace the ball joint for under $75.00 per control arm.
  3. 3
    Factory front end alignment

    No premature tire wear.

  4. 4
    Red powder coat finish

    Your friends can see you invested in custom arms for your vehicle

  5. 5
    Heavy duty tubing

    Long lasting off road durability.

  6. 6
    CNC manufactured parts

    Precision and consistent parts every time!

  7. 7
    Manufactured in USA

    Made by Americans for ALL!!

  8. 8
    3 degrees additional caster

    Impove alignmnent through additional added positive caster

  9. 9
    3/4 inch more down travel

    Adds 3/4 inch more down travel just by changing your upper controll arms

1998 Toyota 4Runner Upper Control Arm

Upgrade your 1998 Toyota 4Runner with JBA Offroad's upper control arms, engineered to restore alignment and enhance handling after suspension lifts. Built from durable tubular steel and featuring patented EZ Lube bushings, these UCAs improve caster correction, increase wheel travel, and boost ride stability. Tested on real trails and backed by a lifetime structural warranty, they're designed to deliver reliable performance on and off-road.

Built For Lasting Performance And Fit

JBA upper control arms offer measurable advantages for lifted 4Runners, including improved tire clearance and suspension articulation. Our exclusive Max 90 ball joints provide the widest range of motion available, reducing wear and enhancing durability. All components are precision-machined in the USA and powder-coated for protection against harsh terrain. Easy to maintain with patented greaseable bushings, these UCAs come with hassle-free installation instructions and a 365-day return policy for confidence in your purchase.

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In Stock With Fast Shipping

Our 1998 Toyota 4Runner upper control arms are in stock and ready to ship within 24 hours, so you can keep your build moving. We back every purchase with a straightforward lifetime structural warranty and a generous one-year warranty on joints and bushings. If you’re not completely satisfied within 365 days, return it hassle-free. Take control of your ride today with parts designed to perform on the trail and the street.