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RS-R T999D is the exact Down Sus lowering springs shown in this listing. It is intended for 2015-2025 Lexus RC-F and 2016-2020 Lexus GS-F. Confirm the complete vehicle, drivetrain, factory suspension, chassis notes, ride-height requirements, wheel and tire clearance, and alignment plan before ordering.
Key Features
- SKU: T999D RS-R 2015-2020 Lexus RC F 2016-2020 GS F Down Lowering Springs RS-R T999D Down Lowering Springs fit 2015-2020 Lexus RC F and 2016-2020 Lexus GS F models with precise ride height drop.
- Front lowers 30mm (1.2 inches) rear 35mm (1.4 inches) to sharpen handling reduce body roll and deliver planted aggressive stance.
- Direct bolt-on installation keeps daily comfort while improving cornering response and stability for Lexus RC F lowering springs and GS F suspension upgrade.
Fitment
| Years | Make | Model | Submodel | Application |
|---|---|---|---|---|
| 2015-2025 | Lexus | RC F | All applicable | Chassis code USC10 and URL10 |
| 2016-2020 | Lexus | GS F | All applicable | Chassis code USC10 and URL10 |
Specifications
| Brand | RS-R |
|---|---|
| Manufacturer Part Number | T999D |
| Product Type | Lowering Springs |
| Product Line | Down Sus |
| Condition | New |
| Chassis code | USC10 and URL10 |
| Approximate Drop: RC-F / 2015-2019 Front | -30mm to -35mm (-1.2in to -1.4in) |
| Approximate Drop: RC-F / 2015-2019 Rear | -20mm to -25mm (-0.8in to -1.0in) |
| Approximate Drop: RC-F / 2020+ Front | -25mm to -30mm (-1.0in to -1.2) |
| Approximate Drop: RC-F / 2020+ Rear | -15mm to -20mm (-0.6in to -0.8in) |
| Approximate Drop: GS-F Front | -25mm to -30mm (-1.0in to -1.2in) |
| Approximate Drop: GS-F Rear | -20mm to -25mm (-0.8in to -1.0in) |
| Spring Rate Front | 8.67 kg/mm |
| Spring Rate Rear | 14.4 kg/mm |
| Warranty | 3 Years / 36,000 miles from the day of purchase |
What's Included
One new RS-R Down Sus product in the exact manufacturer configuration for part number T999D. Confirm the official parts list before installation.
Brand Information
RS-R engineers vehicle-specific lowering springs, coilovers, suspension components, and related performance products. Exact application details, chassis requirements, ride-height ranges, spring rates, and installation notes vary by part number.
Related RS-R Products
- Shop all RS-R products
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Frequently Asked Questions
Will RS-R T999D fit my vehicle?
Match the exact year, make, model, submodel, drivetrain, chassis, and factory suspension notes shown on this page. Contact support before ordering when any detail differs.
What is included with RS-R T999D?
This listing includes one new RS-R Down Sus product in the manufacturer configuration for part number T999D. Reused factory parts and separately required tools or hardware are not included unless explicitly stated.
What should be checked after installation?
For suspension products, verify torque, clearances, ride height, alignment, electronic warnings, and safe operation. For the oil additive, verify the correct treatment quantity and final oil level.
Installation Instructions
Follow the current RS-R instructions for part number T999D and the vehicle or component manufacturer's service procedure. Suspension work requires safe vehicle support, correct tools, specified fastener replacement and torque, clearance checks, final ride-height settling, and a professional alignment before normal driving.
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