Description
Designed specifically for 2021+ Lexus IS300/350 RWD (IS300), RS-R Down Sus Lowering Springs reduce factory ride height with spring rates selected around the application. They suit drivers who want a more purposeful stance while keeping a conventional fixed-height suspension setup.
Why Choose RS-R Down Sus?
Down Sus is RS-R's standard lowering-spring line, developed around each vehicle's factory suspension geometry, damper behavior, spring rate and target ride height. It is the sensible choice when the goal is a cleaner stance and a more tied-down feel without replacing the complete damper assembly.
Vehicle Fitment
- Vehicle: 2021+ Lexus IS300/350 RWD
- Chassis: IS300
- Drivetrain / Trim: RWD
- RS-R Part Number: T591D
Technical Specifications
| Specification | Front | Rear |
|---|---|---|
| Approximate Ride Height Change | -25mm to -30mm (-1.0in to -1.2in) | -25mm to -30mm (-1.0in to -1.2in) |
| Spring Rate | 5.48 kg/mm | 8.16 kg/mm |
Ride-height figures are approximate manufacturer development data and can vary with vehicle specification, mileage, load and installation.
Before Ordering
Lowering springs are fixed-height components. Final ride height can vary with vehicle condition, factory options, mileage and load, so published drop figures should be treated as approximate. This listing is application-specific to the stated drivetrain/trim (RWD); verify that detail rather than ordering by model year alone.