RS*R XBIH034MA Best-i Active Coilover Suspension Kit

The RS*R Best-i Active Coilover Kit is an advanced suspension system specifically engineered for the 2023+ Honda Civic Type R FL5 chassis. This premium coilover system is designed to work seamlessly with the factory Adaptive Damper System without triggering dashboard error lights, making it a true plug-and-play performance upgrade.

Key Features:

• 36-way adjustable dampers on both front and rear for precise tuning control
• Secondary 24-way adjustment dial located at the base of each coilover for fine-tuning
• Compatible with factory AVS (Adaptive Variable Suspension) system - retains OEM electronic damping controls
• Hand-welded lower brackets and laser-cut upper mounts for superior quality
• Monotube damper design for enhanced heat dissipation and consistent performance
• Spring rates: Front 8.00 kg/mm, Rear 6.00 kg/mm

Height Adjustment Range:

• Front: +5mm to -50mm (-0.2 to -2.0 inches)
• Rear: -10mm to -55mm (-0.4 to -2.2 inches)
• Preset approximate height: Front -25mm to -30mm, Rear -30mm to -35mm

What's Included:

• Complete front and rear coilover assemblies
• Hex and Allen wrenches for adjustment
• Rubber and polyurethane seats for rear adjuster
• Flange nuts for rear installation
• Zip ties and wiring harness for rear components

This suspension system is backed by a 1-year/12,000-mile warranty from date of purchase. Note: Factory rear upper mount must be reused during installation. Hand-assembled by Racing Studio-R in Japan, these coilovers deliver an ideal balance of daily driving comfort and track-ready performance.