1979–85 Mazda RX-7, first generation (SA/FB) chassis stiffening
4 kits to stiffen the body shell, from frame rails and connectors to braces and roll bars.
- How it's built
- Steel unibody
- Weak spots
- Rear wheel arches and quarter panels, rocker panels, floor pans and the hatch area rust. The rubber link bushings, Watt's linkage pivots and steering box wear, and original struts are usually worn out.
Stiffening kits
| Area | Kit | What it is | Price |
|---|---|---|---|
| Chassis bracing | Racing Beat Strut Tower Brace (1979-85 RX-7) | Re-release of the original Racing Beat front strut brace. | $550 Source |
| Shock & strut tower braces | Racing Beat (sold by Mazdatrix) STRUT TOWER BRACE 79-85 RX7 (RACING BEAT) | Same Racing Beat brace via Mazdatrix. | $495 Listed price Source |
| Shock & strut tower braces | Racing Beat Strut Tower Brace 1979-85 RX-7 (14016) | Front strut tower brace; may need mods with short-stud aftermarket top hats. | $550 Listed price; page showed backorder Source |
| Roll bar & cage | Competition Engineering (sold by JEGS) Main Hoop for 8-Point Roll Bar, 1979-1985 Mazda RX-7 (C9408) | Weld-in mild steel main hoop; needs strut kit 247-3000 for complete bar. | See source Price on page rendered ambiguously ('$9599'); not recorded 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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