1986–92 Mazda RX-7, second generation (FC) chassis stiffening
2 kits to stiffen the body shell, from frame rails and connectors to braces and roll bars.
- How it's built
- Steel unibody
- Weak spots
- Rust shows up in the rear wheel arches, rocker panels, around the sunroof drains and in the battery tray area. The DTSS toe-control bushings and rear subframe and differential bushings wear and cause vague, shifting rear toe.
Stiffening kits
| Area | Kit | What it is | Price |
|---|---|---|---|
| Shock & strut tower braces | Cusco (sold by Vivid Racing) Cusco OS Front Strut Bar Mazda RX-7 FC3S 86-92 | Front strut bar for FC3S. | $220 Listed price Source |
| Shock & strut tower braces | Cusco (sold by DriftHQ) Cusco Strut Bar Carbon CB Rear FC3S RX-7 (CUS420 551 A) | Carbon rear strut bar for FC3S. | $328.50 Sale price (was $365); page showed sold out 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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