RS*R XLIT170MA Best i Active Coilover System for Lexus GS350

The RS*R Best i Active Coilover System represents a breakthrough in aftermarket suspension technology, specifically engineered to work seamlessly with factory Adaptive Variable Suspension (AVS) systems. Unlike conventional aftermarket coilovers that disable factory electronic damping controls, the Best i Active series retains full compatibility with your vehicle's AVS system, allowing you to adjust damping characteristics through the factory interior controls while enjoying the benefits of a performance coilover setup.

Key Features:

• Full AVS system compatibility - factory actuator and controls remain functional
• Dual damping adjustment: Factory AVS controller plus secondary 24-way manual adjustment dial at damper base
• Hand-assembled monotube damper construction for superior performance and reliability
• Laser-cut aluminum upper mounts with hand-welded lower brackets
• Vehicle-specific valving optimized for both daily driving comfort and track performance
• Front spring rate: 9.00 kg/mm (503 lbs/in)
• Rear spring rate: 8.30 kg/mm (464 lbs/in)
• Front height adjustment range: +0.6 inches to -3.7 inches (+15mm to -95mm)
• Rear height adjustment range: -0.6 inches to -2.4 inches (-15mm to -60mm)
• Recommended optimal adjustment: Front 0 to -2.4 inches / Rear -0.6 to -2.4 inches
• Made in Japan with rebuildable construction

This complete coilover kit includes four fully assembled damper units. The Best i Active combines RS*R's decades of suspension expertise with modern electronic compatibility, delivering precise handling, adjustable ride height, and maintained factory ride quality controls. The system maintains sufficient damper stroke travel to ensure comfort isn't sacrificed when lowering your vehicle.