TEIN RX1 Coilover Kit – 2015-2021 Subaru WRX STI 4WD (VAF)

The TEIN RX1 Coilover Kit for your 2015-2021 Subaru WRX STI 4WD (VAF) is a performance-oriented, full-length adjustable suspension system that strikes an excellent balance between sportiness and daily comfort. It uses a twin-tube damper design that delivers long stroke and low repulsion force, improving ride quality over uneven surfaces. A Hydraulic Bump Stopper (H.B.S.) mechanism replaces conventional bump rubbers, converting hard impacts into thermal energy to reduce harsh rebound. The kit features 16-level damping adjustment for precise tuning of compression and rebound. Ride height is fully adjustable via a threaded lower seat, allowing you to lower or raise your car while maintaining damper travel. You also get camber-adjustable lower brackets, giving fine control over alignment by rotating eccentric washers.

Mounts are included – either reinforced rubber or pillow-ball, depending on the model – tailored to each application. Built with no-sag springs (SAE9254 steel) and durable TEIN-Green powder-coated bodies, it”s both durable and resistant to corrosion. The damper oil is specially formulated for high-performance use, offering stable viscosity across a wide temperature range and excellent anti-foaming properties. Plus, the RX1 is compatible with TEIN”s optional EDFC electronic damping controller, letting you adjust damping from inside the car for even more tuning flexibility.

Standard Features

Specifications

Vehicle Fitment