RS-R XLIT104MA Best-i Active Coilovers for 2015-24 Lexus RC300/RC350 RWD

Vehicle Fitment

• 2015-2024 Lexus RC300 / RC350 (RWD, GSC10 platform) - fitment confirmed through 2024; 2025+ coverage unconfirmed at time of listing.

Features

• RS-R Best-i Active coilover system engineered specifically for the Lexus RC300/RC350 RWD platform.
• Preset ride height drop of approximately -30 mm to -35 mm front and -20 mm to -25 mm rear for improved stance and wheel-arch alignment.
• Extensive adjustability: Front +15 mm to -105 mm; Rear 0 mm to -55 mm to suit street, stance or track configurations.
• Uniform spring rates of 9.00 kg/mm front and rear for balanced handling and ride quality.
• Vehicle-specific direct-fit design maintains factory suspension geometry and integration with AVS/active systems.
• High-quality hand-assembled mono-tube dampers, silent roller bearing mounts and urethane bushings for reduced noise and premium feel.
• Ideal for enthusiasts seeking full adjustability combined with luxury performance-car refinement.
• Designed for daily driving, performance use and visual upgrade - not a generic universal kit.

Specifications

• Part number: XLIT104MA (RS-R Best-i Active series)
• Application: Lexus RC300 / RC350 RWD (2015-2024)
• Drivetrain: Rear-Wheel Drive (RWD)
• Preset drop: Front approx -30 mm to -35 mm (-1.2" to -1.4"); Rear approx -20 mm to -25 mm (-0.8" to -1.0")
• Adjustment range: Front +15 mm to -105 mm (+0.6" to -4.2"); Rear 0 mm to -55 mm (0" to -2.2")
• Spring rate: Front 9.00 kg/mm; Rear 9.00 kg/mm
• Installation: Advanced performance suspension; alignment strongly recommended after installation.

Included Components

• 1x left front coilover assembly
• 1x right front coilover assembly
• 1x left rear coilover assembly
• 1x right rear coilover assembly
• Adjustment spanner wrenches and instructions

Product Description

The RS-R XLIT104MA Best-i Active coilovers offer a full featured performance suspension solution for the 2015-2024 Lexus RC300 and RC350 (RWD). With a preset drop of approximately -30 mm front and -20 mm rear, this system improves stance and driving dynamics while retaining luxury ride comfort. The broad adjustment range allows customization from subtle street lowering up to aggressive track-ready height, making it versatile for various use-cases.

Engineered specifically for the RC RWD platform, the kit integrates seamlessly with factory suspension geometry and active system interfaces. The matched spring rates (9.00 kg/mm front/rear) and high-quality mono-tube dampers ensure consistent performance, reduced noise and improved handling precision. Ideal for owners who demand premium fitment, adjustability and performance refinement in one package.

Before purchasing, ensure your vehicle is a 2015-2024 Lexus RC300 or RC350 in Rear-Wheel Drive configuration. Fitment beyond 2024 is unconfirmed at time of listing. Installation requires moderate to advanced suspension skills and an alignment post-installation is highly recommended. Achieve refined performance and standout stance with the RS-R XLIT104MA Best-i Active coilovers.