Product Details
These RS-R Down Sus lowering springs fit the 2015+ Lexus RC-F.
RS-R Down Sus lowering springs for the 2015+ Lexus RC-F (USC10) drop the car into a cleaner, more purposeful stance while tightening body roll and sharpening turn-in on everyday roads. Each set is engineered specifically for this RC-F chassis, so drop, spring rate and factory damper tune stay in balance — the car sits where you want it and still drives like a daily.
Racing Studio-R built its first suspension in Osaka in 1972 and has been refining the Down Sus spring for more than fifty years. Each set is progressive-rate, cold-wound and heat-treated in-house in Japan, then matched to the factory shock valving and ride-height target of the specific chassis it bolts onto. Backed by RS-R’s 3-year / 50,000 km fatigue warranty.
Features
- Progressive-rate coil tuned to the factory damper
- Vehicle-specific drop and rate — no universal cuts
- Cold-wound from high-grade SAE alloy steel
- Powder-coated for long-term corrosion resistance
- 3-year / 50,000 km RS-R spring-fatigue warranty
- Made in Osaka, Japan
Specifications
| Part Number | T999D |
| Part Name | RS-R Down Sus Lowering Springs |
| Vehicle | 2015+ Lexus RC-F |
| Chassis Code | USC10 |
| Ride-Height Adjustable | No |
| Spring Type | Progressive |
| Approximate Drop - Front | 2015-2019: -30mm to -35mm (-1.2in to -1.4in)2020+: -25mm to -30mm (-1.0in to -1.2) |
| Approximate Drop - Rear | 2015-2019: -20mm to -25mm (-0.8in to -1.0in)2020+: -15mm to -20mm (-0.6in to -0.8in) |
| Spring Rate - Front | 8.67 Kg/mm |
| Spring Rate - Rear | 14.40 Kg/mm |
| Warranty | 3 Years / 50,000 km |
| Notes | - |