1966–77 Early Bronco chassis stiffening
1 kit to stiffen the frame, from frame rails and connectors to braces and roll bars.
- How it's built
- Full ladder frame (C-channel rails, short 92in wheelbase)
- Weak spots
- The steering box mount and frame horns crack. Radius-arm bushings and the track bar allow wander, and the stock box and drag link are vague, with bump steer when lifted.
Stiffening kits
| Area | Kit | What it is | Price |
|---|---|---|---|
| Frame stiffening | BC Broncos 48-20011 P/S Box Frame Reinforcement Kit | 1/4in plate and tubes that replace collapsing factory braces; weld-in | $43.74 BC Broncos list Source |
Prices are from the linked seller pages and change often. Confirm fitment for your exact year and body style before ordering; many weld-in parts need professional installation. Some links earn us a commission.
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