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SKU: T171S
RS-R 2013-2015 Lexus GS350 RWD F-Sport (GRL10) Super Down Springs
RS-R Super Down Springs T171S fit 2013-2015 Lexus GS350 RWD Base and F-Sport models on GRL10 chassis. Front lowers 40mm (1.57 inches) rear 35mm (1.38 inches) to sharpen handling reduce body roll and deliver aggressive stance. Progressive rates front 4.2 kgf/mm rear 2.8 kgf/mm maintain daily drivability while boosting cornering on street or track.
Key Features
- Precise Drop Specs: Front 40mm rear 35mm lowering creates low center of gravity improved aerodynamics and confident grip in turns.
- SAE 9254V Steel Construction: High tensile chrome-vanadium alloy handles heavy loads resists sagging for long-term durability in performance use.
- Progressive Spring Rates: Front 4.2 kgf/mm rear 2.8 kgf/mm absorb bumps smoothly firm up in aggressive driving for balanced comfort control.
- Red Urethane Powder Coat: Durable finish resists rust corrosion road salt for performance in all weather.
- OEM-Quality Fitment: Bolt-on matches factory points no modifications integrates with stock or aftermarket shocks.
Product Notes
- Pair with adjustable coilovers or performance dampers for maximum results.
- Inspect alignment after install to maintain tire wear and handling.
- Packaged securely to prevent shipping damage.
Installation Notes
- Professional installation recommended.
- Use spring compressor tool for safe removal and replacement.
- Compatible with OEM struts and most aftermarket coilovers.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2013-2015 | Lexus | GS350 | Base RWD GRL10 |
| 2013-2015 | Lexus | GS350 | F Sport RWD GRL10 |
Why Choose RS-R?
- Japanese engineering from motorsport heritage delivers proven street-track reliability.
- Rigorously tested on public roads and circuits for real-world performance.
- Trusted by Lexus tuners for exact fit and consistent results.
Frequently Asked Questions
-
Q: Will T171S fit AWD GS350 models?
A: Designed exclusively for RWD GRL10 chassis Base and F-Sport verify your drivetrain before purchase. -
Q: What material are the springs made from?
A: SAE 9254V high-tensile chrome-vanadium steel alloy with progressive winding for strength and ride compliance. -
Q: What is the warranty coverage?
A: RS-R offers 1-year manufacturer defect warranty register product for extended support.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Sturdy cardboard box 16 x 6 x 16 inches
- Weight: 25.4 lbs
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