DR. KDSS Bolt-On Trackbar Correction Kit (B.O.T.C.K.) – 4th & 5th Gen 4Runner

If you’ve lifted your 4Runner, you’ve likely noticed a change in how it tracks. Maybe the rear end feels loose over potholes, or you feel a sketchy side-to-side shimmy when hitting bumps at highway speeds. This is known as bump steer, and it happens because your factory Panhard bar (or trackbar) is now sitting at a steep, aggressive angle instead of being level with the ground.

The DR. KDSS Bolt-On Trackbar Correction Kit (BOTCK) is the definitive fix. By raising the axle-side pivot point, this kit returns your Panhard bar to a horizontal position. This allows your rear axle to cycle straight up and down as intended, rather than swinging in an arc that pulls the axle off-center every time the suspension compresses.

Engineered for Strength, Built for the Trail
Most relocation brackets on the market are weld-on only, which is a barrier for many DIYers. The DR. KDSS BOTCK changed the game with a true bolt-on design that doesn't compromise on strength.

• Double-Shear Design: Unlike flimsy single-bolt brackets that can flex or ovalize your factory mount, this kit features a wrap-around, double-shear design. It ties into the OEM mount from multiple angles to spread the load evenly across the entire axle housing.
  
• Heavy-Duty Construction: Laser-cut from 1/4" (3-gauge) steel and finished in a durable powder coat, this bracket is arguably stronger than the factory mount it attaches to.
• No Welding Required: This is a 100% bolt-on solution. If you ever decide to return your truck to stock, the BOPCK can be removed without leaving a trace.

Choosing Your Version: Standard vs. Shorty

• Depending on your lift height and shock setup, there are two versions available:
  • Standard Version: Best for rigs with 3" or more of rear lift. It features two mounting holes, allowing you to fine-tune the bar's angle to get it as close to parallel with the axle as possible.
    
  • Shorty Version: Optimized for 1.5" to 3" of rear lift. It provides the same geometry correction but with a lower profile to ensure maximum up-travel clearance for those running extended-travel shocks (like King or Fox) who don't want the bracket contacting the frame.

Key Features

• Corrects Axle Geometry: Eliminates the side-to-side kick during suspension cycling.
• Improved Roll Center: Raising the pivot point improves the vehicle's roll center, making the truck feel more planted and less top-heavy in corners.
• KDSS Compatible: Works perfectly with both KDSS and non-KDSS models.
• Full Hardware Kit: Includes high-strength Grade 8/Class 10.9 zinc-plated hardware and the signature wing nut plate for a secure internal anchor.

Pro Tip: When you lift a 4Runner, an adjustable Panhard bar is great for re-centering the axle, but it does nothing to fix the angle of the bar. To truly get rid of that wandering feeling on the highway, you need a correction kit like the BOTCK. It’s the single most underrated suspension upgrade for the 4Runner platform. If you’re at 2" of lift, go Shorty; if you’re at 3" or more, go Standard.