Tein RX-1 Coilover Kit: FRS/BRZ/86 2013-2020 and GR86/BRZ 2022+

Note: This supercedes and replaces the Flex-A coilover (part number VSTD8-D1SS4)

Damping Force Adjustment:

RX1 features 16-level damping force adjustment, for simultaneous adjustment of compression and rebound.
Modify ride comfort and handling according to your preference, changing the properties of the shock absorber with the adjustment dial.

Hydraulic Bump Stops

In regular shock absorbers, bump rubber is vital to avoid damage from bottoming out. Unfortunately it causes instability, because when a large impact compresses it, energy thus amassed is released upwards.

RX1 however uses the Hydraulic Bump Stopper (H.B.S.) to convert the impact to thermal energy and absorb it. This strongly reduces the shock, and there's no repulsion force.

Near full compression, when the piston rod strokes beyond a predetermined point, the operative valve is pushed down and activates H.B.S.: the base valve ports are narrowed, blocking the oil flow. This results in high damping force.

A relief valve serves to suppress sudden damping force increase, when the pressure in the cylinder exceeds its regular level.

The setup of the H.B.S. mechanism is optimized per vehicle model, with the right activation point and damping force.

Other features include:

• New Hydraulic Bump Stopper which has been employed in the likes of world rally cars, designed inside the shock to protect the shock at full damping force.
• Twin Tube System for those of you with larger and wide wheels. When at a low setting this feature provides a sufficient, low friction stroke to handle the bumpiest of road consitions.
• Full-length Ride Height Adjustment Systems. This is a great feature that allows you to lower the suspension settings without messing with the pre-load.
• Damping Force Adjustable allows 16 levels of damping force adjustment to the driver’s desired ride comfort levels.
• Compatible with EDFC Series to enable 16-way level in cockpit adjustment without leaving the vehicle.
• Upper mounts included for easy installation. This is a convenient feature so you don’t have to take apart your factory suspension just to take the top hats off. This will save you time and stress. Plus, the front strut mounts are camber adjustable.
• Available for overhaul, and revalving. The shock absorbers included in this kit have been designed to be restored to bring the performance back to new levels. Also the damping can be changed per customers request through Tein.