RS-R 2015+ Lexus RC350 (GSC10) Best-i Active Coilovers

SKU: XLIT104MA

RS-R Best-i Active Coilovers for 2015+ Lexus RC350 (GSC10)

Unparalleled heights with the RS-R Best-i Active Coilovers, the definitive choice for performance enthusiasts seeking the perfect blend of track-ready precision and daily driving comfort. Engineered with cutting-edge technology and precision craftsmanship, these coilovers stand head and shoulders above the competition, delivering superior handling, customizable ride quality, and seamless integration with your factory Adaptive Variable Suspension (AVS) system. If you’re looking for the best suspension upgrade to dominate the streets and the track, the RS-R Best-i Active Coilovers are your unrivaled solution.

Why RS-R Coilovers?

• Unmatched AVS Compatibility: Unlike most aftermarket coilovers that disable your Lexus RC350’s factory AVS system, the RS-R Best-i Active Coilovers retain full functionality of the AVS controller, allowing seamless damper adjustments through your vehicle’s stock interface. Paired with a secondary 24-way adjustment dial at the base of the dampers, you have ultimate control over your suspension’s performance, tailoring it to any driving condition—whether it’s a spirited track day or a smooth highway cruise.
• Precision-Engineered for Performance: Hand-assembled with monotube damper technology, laser-cut upper mounts, and hand-welded lower brackets, these coilovers are built for durability and precision. The RS-R Best-i Active Coilovers feature vehicle-specific valving and spring rates (Front: 9.00kg/mm, Rear: 9.00kg/mm) optimized for the RC350 F-Sport RWD (Chassis: GSC10), ensuring razor-sharp handling, reduced body roll, and confident cornering. Users report minimal body roll in S+ mode on sweeping freeway runs, making these coilovers a game-changer for performance driving.
• Customizable Ride Height: Achieve the perfect stance with preset approximate heights (Front: -30mm to -35mm, Rear: -20mm to -25mm) and maximum adjustment ranges (Front: +15mm to -105mm, Rear: 0mm to -55mm). Recommended adjustments (Front: -5mm to -55mm, Rear: 0mm to -55mm) ensure optimal ride-ability without compromising comfort or risking rubbing issues. Whether you want an aggressive lowered look or a practical daily setup, these coilovers deliver unmatched flexibility.
• Track-Proven, Street-Ready: Designed for enthusiasts who demand the best of both worlds, the RS-R Best-i Active Coilovers provide a comfortable ride for daily driving while excelling on the track. Spend less time dialing in your suspension and more time enjoying the drive. The monotube design and high-quality oil ensure consistent performance by minimizing heat-induced damping changes, outperforming competitors like BC Racing or Tein Flex AVS in both comfort and reliability.
• Trusted Quality and Warranty: RS-R, a global leader in high-performance suspension since 1980, backs the Best-i Active Coilovers with a 1-year or 12,000-mile limited warranty against manufacturing defects. With a legacy of innovation and a commitment to quality, RS-R ensures your investment is protected. The coilovers ship securely (Box Dimensions: 31.2” x 14.8” x 14.3”, Weight: 63.3 lbs) and are available for worldwide delivery with full insurance and signature confirmation.

Specifications:

• Part Number: XLIT104MA
• Compatibility: 2015+ Lexus RC350 F-Sport RWD (Chassis: GSC10)
• Spring Rates: Front 9.00kg/mm, Rear 9.00kg/mm
• Height Adjustments:
• Preset: Front -30mm to -35mm (-1.2in to -1.4in), Rear -20mm to -25mm (-0.8in to -1.0in)
• Maximum: Front +15mm to -105mm (+0.6in to -4.2in), Rear 0mm to -55mm (0in to -2.2in)
• Recommended: Front -5mm to -55mm (-0.2in to -2.2in), Rear 0mm to -55mm (0in to -2.2in)
• Notes: Requires factory AVS motor (not included); factory rear upper mount must be reused.

Why RS-R Best-i Active Coilovers Are the Best Choice:

Compared to alternatives like BC Racing BR Series or Tein Flex AVS, the RS-R Best-i Active Coilovers offer superior AVS integration, finer damper adjustability, and a monotube design that outperforms in heat management and durability. While BC Racing focuses on affordability and Tein offers AVS compatibility, neither matches the RS-R’s blend of precision engineering, track-ready performance, and daily comfort. For Lexus RC350 owners seeking the ultimate suspension upgrade, the RS-R Best-i Active Coilovers are the clear winner.