1993–95 Mazda RX-7, third generation (FD) chassis
This car is a unibody, so there's no separate frame to replace. The way to modernize it is to upgrade the original suspension, stiffen the body shell and fix the known weak spots.
Upgrade the original chassis
- How it's built
- Steel unibody with aluminum hood and an aluminum power plant frame tying the transmission to the differential
- Front suspension
- Double wishbone suspension with aluminum control arms and coil springs. Power rack-and-pinion steering.
- Rear suspension
- Double wishbone independent rear suspension with aluminum arms. A Torsen limited-slip differential was standard on US cars.
- Weak spots
- Rust is less of an issue than on older RX-7s but appears in the rear wheel arches, rocker panels and around sunroof drains. Engine-bay heat cooks rubber bushings and hoses, the front anti-roll bar mounts are known to crack, and the rubber-bushed rear toe links let toe change under load.
Stiffening the body or frame? We list 5 kits for this car, such as frame rails, subframe connectors and braces, on its Chassis stiffening page.
Suspension and steering kits for the original chassis
| Area | Kit | What it does | Price |
|---|---|---|---|
| Complete kit | Racing Beat Sway Bar Package (93-95 RX-7) | Racing Beat anti-roll bar set with solid front bar; price not shown on page. | See source Source |
| Coilovers | BC Racing 93-95 Mazda RX-7 FD coilovers | BC Racing vehicle page; price is the lowest listed option. | $1,215 from Source |
| Coilovers | Fortune Auto Mazda RX-7 (FD3S) 1993-2002 - 500 Series Coilovers | Fortune Auto 500 Series; price is the lowest listed option. | $1,978 from Source |
| Rear suspension | SPL Parts Rear Toe Links Mazda RX-7 FD | Adjustable rear toe links. | $399 Source |
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