TEIN VSSB0-M1SS4 RX1 Coilover Kit for 2015-2021 Subaru WRX/STI

The TEIN RX1 Coilover Kit delivers professional-grade suspension performance engineered specifically for 2015-2021 Subaru WRX and STI models. This complete four-corner coilover system features advanced twin-tube construction that provides enhanced ride quality and consistent stroke control for both daily driving and spirited performance.

Key Features:

• Hydraulic Bump Stopper (HBS) technology absorbs harsh impacts and eliminates bouncing for superior ride comfort
• 16-level damping force adjustment for simultaneous compression and rebound tuning
• Full-length ride height adjustment: front drop range of 1mm to -88mm, rear drop range of 19mm to -81mm
• Adjustable front camber via eccentric lower brackets for precise alignment control
• Spring rates: 8 kgf/mm front, 7 kgf/mm rear
• Compatible with TEIN EDFC electronic damping controller (EDK05-12140, sold separately)
• OEM-specification brake hose fittings for direct installation
• Vehicle-specific top mounts included with camber-adjustable pillow ball mounts for front struts

Constructed with high-strength SAE9254 steel springs and featuring TEIN's proprietary ZT coating and powder coating for superior corrosion resistance. Each kit includes durable dust boots to protect piston rods and maintain long-term reliability. The RX1's twin-tube design provides longer strokes with reduced repulsive force, delivering the ideal balance between performance handling and daily comfort.