Product Details
These RS-R Super Down Sus lowering springs fit the 2021+ Lexus IS300 RWD (GSE31).
RS-R Super Down Sus springs for the GSE31 IS300 give a lower drop than the Down Sus and keep a daily ride. The progressive-rate coils close up the fender gap, drop the center of gravity and tighten body roll through corners, while RS-R’s vehicle-specific rate tuning keeps the ride compliant on rough pavement.
The Super Down Sus is RS-R’s progressive-rate Down Sus spring with a lower drop. Every set is cold-wound in Osaka, Japan to a vehicle-specific rate so the car stays daily-capable at the lower ride height. Covered by RS-R’s 3-year / 50,000 km spring-fatigue warranty.
Features
- Aggressive drop for a deeper, more tucked stance
- Progressive-rate winding keeps the ride streetable
- Vehicle-specific: tuned to OE damper valving
- Cold-wound SAE alloy steel with powder coat
- 3-year / 50,000 km RS-R spring-fatigue warranty
- Made in Osaka, Japan
Specifications
| Part Number | T591S |
| Part Name | RS-R Super Down Sus Lowering Springs |
| Vehicle | 2021+ Lexus IS300 |
| Chassis Code | GSE31 |
| Drivetrain | RWD |
| Ride-Height Adjustable | No |
| Spring Type | Progressive |
| Approximate Drop - Front | -45mm to -50mm (-1.8in to -2.0in) |
| Approximate Drop - Rear | -40mm to -45mm (-1.6in to -1.8in) |
| Spring Rate - Front | 5.20 Kg/mm |
| Spring Rate - Rear | 8.67 Kg/mm |
| Warranty | 3 Years / 50,000 km |
| Notes | - |