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Cusco Japan engineers the strut-tower braces, sway bars, alignment correction, and limited-slip differentials that power JDM and time-attack programs. The brand behind countless Time Attack and grassroots motorsport podiums.
The Cusco OS-T Rear Strut Bar offers a refined approach to chassis stiffening for the Mazda RX-7 FC3S. This high-performance brace is designed to bridge the rear strut towers, effectively neutralizing chassis flex that occurs during high-G cornering. By limiting the movement of the strut towers, the OS-T bar ensures that your suspension geometry remains consistent, providing you with the confidence to push your RX-7 to its limits.
Whether you are navigating tight corners on a track or enjoying a spirited drive on winding roads, the Cusco OS-T Rear Strut Bar significantly improves the responsiveness of your vehicle. It is an essential modification for those seeking to optimize their suspension setup and maximize tire performance. The bar is lightweight yet incredibly strong, ensuring that you gain the benefits of a stiffer chassis without adding unnecessary weight. Elevate your driving experience with this precision-engineered component from GGCRACING.
| Brand | Cusco |
|---|---|
| Manufacturer part number | 420 544 A |
| GGC SKU | CUS420 544 A |
| UPC / GTIN | 4996338420527 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 24.5 × 6 × 3.7 in |
|---|---|
| Shipping weight | 3.2 lb |
| Year | Make | Model | Trim |
|---|---|---|---|
| 1986-1987 | Mazda | RX-7 | Base |
| 1986-1990 | Mazda | RX-7 | GXL |
| 1986-1991 | Mazda | RX-7 | Turbo |
| 1987 | Mazda | RX-7 | LX, LX 2+2, Sport, Base 2+2 |
| 1987-1990 | Mazda | RX-7 | GXL 2+2 |
| 1988 | Mazda | RX-7 | SE, SE 2+2, 10th Anniversary |
| 1988-1990 | Mazda | RX-7 | GTU |
| 1988-1991 | Mazda | RX-7 | Convertible |
| 1989-1990 | Mazda | RX-7 | GTUs |
| 1991 | Mazda | RX-7 | Base |
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