- A hardened mount bush for attaching the steering gear to the body.
- A bush made of harder rubber cuts extra motion in steering gear.
- Steering response is improved.
- The driver feels more in synch with his car and in direct touch with the road environment.
| Vehicle | Model | Application | Part | Part no. | Qty per car |
| Silvia 180SX |
(R)S13 (R)PS13 |
All models | On right side | 54444RS520 | 1 |
| On left side | 54445RS520 | 1 | |||
| S14 | All models | On right side | 54444RS520 | 1 | |
| On left side | 54445RS540 | 1 | |||
| S15 | All models | On right side | 54444RS590 | 1 | |
| On left side | 54445RS540 | 1 | |||
| Skyline | R32 *) | 2WD CA18i､RB20E |
On right side | 54444RS520 | 1 |
| On left side | 54445RS590 | 1 | |||
| R33 | 2WD without HICAS | On right side | 54444RS520 | 1 | |
| 2WD with HICAS | On right side | 54444RS590 | 1 | ||
| 2WD all models | On left side | 54445RS590 | 1 |
＊) 54440RS580(for BNR32) can be installed on GTS4.