Dr KDSS B.O.T.C.K. Bolt-On Track Bar Correction Kit | 2024+ Land Cruiser 250 & GX550, 2025+ 4Runner

The Dr KDSS B.O.T.C.K. (Bolt-On Track Bar Correction Kit) for the Land Cruiser 250, Lexus GX550 and 6th Gen 4Runner raises the axle-side track bar pivot to flatten the track bar angle after a lift. The result: a rear end that tracks straight, stays planted, and feels predictable on-road and off — with zero welding.

Why It Matters

Lifting a solid rear axle steepens the track bar (panhard bar) angle. A steep bar pushes the axle side-to-side as the suspension cycles instead of letting it move straight up and down, and the rear feels vague and unstable. Raising the pivot point levels the bar and brings handling back to normal.

Features

• 100% bolt-on design — no welding or cutting
• Wraps around and into the OEM mount, spreading load across the entire mount instead of relying on a weld line
• Returns the track bar to a more level position after a lift
• Keeps the rig tracking straight and planted on-road and off
• Updated design uses standard hex nuts (no flange nuts)
• Zinc-coated hardware included

Standard vs. Shorty — Pick the Right One

1. Park on level ground.
2. Measure from the ground to the center of the frame-side track bar bolt.
3. Measure from the ground to the center of the axle-side track bar bolt.
4. Subtract the two measurements to get your bolt-height difference:
   • 1.5"–2.99" → Shorty (or use the bottom hole on the Standard bracket)
   • 3" or more → Standard (use the top hole)

Planning to lift higher later? Go Standard — it gives you extra mounting options as ride height changes.

What's Included

• Front bracket
• Back bracket
• Flag nut
• (1) M14 × 1.5 × 80mm flange head bolt
• (1) M14 × 1.5 × 75mm flange head bolt
• (1) M14 × 1.5 × 35mm flange head bolt
• (1) M14 × 1.5 × 30mm flange head bolt
• (1) M14 hex nut
• All hardware zinc coated

Install Notes

• Torque the OEM bolt location to 105 ft-lbs
• Torque all remaining bolts to 120–125 ft-lbs
• Use blue Loctite (or very little red) on all hardware
• Side-bolt washer is no longer needed

Install Video

Notes

• Standard-height brackets can contact the frame at full suspension compression — true of every bracket of this type. Longer bump stops or bump stop spacers solve it, or run the Shorty.