Product Specifications

External Reservoir

Use of reservoir tank allows for larger oil capacity, sufficient stroke and improved thermal dissipation, enabling the generation of stable linear damping force.

2-Way Damping Force Adjustable

2-way damping force adjustment feature for FS2 combines 16-level comp./rebound simultaneous adjustment and 16-level comp. adjustment alone, to offer broad adjustable range for greater setting capabilities to meet wide varieties of driving situations/conditions.

Hydraulic Bump Stopper (H.B.S.)

The solution:
Hydraulic Bump Stopper (H.B.S.)!

Upward jolting and repeated bouncing, driving over a bump. It takes a while to stabilize.

The impact is absorbed; no bouncing and rapid stabilization.

Even in a fully seated and loaded minivan,
jolts from the rough road are reduced.
Ride comfort can be enjoyed in all seats!

* About Bump Rubber

Made from urethane or rubber, it buffers the impact at full compression, preventing damage to the vehicle body or shock absorbers.

How the H.B.S. Mechanism Works

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.

FS2 however uses the Hydraulic Bump Stopper to convert the impact to thermal energy and absorb it. This strongly reduces the shock, and there's no repulsion force.

Swiftly absorbing the impact of big jumps, H.B.S. effects a steady vehicle.

The Hydraulic Bump Stopper (H.B.S.) Mechanism

In shock absorbers with inactive or no H.B.S., the operative valve (green) floats, and oil flows freely through the base valve ports. Resistance to the flow from the shim stack then, causes damping 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.

To avoid damages/breakages, conventional bump rubbers must also be fitted/used with H.B.S.-equipped dampers.

Camber Adjustable Lower Bracket

Lower brackets on strut type suspensions come with camber angle adjustment feature. Camber angle can be adjusted by rotating the eccentric washer 180°. This feature can enable camber angle adjustment, even if it can not be adjusted with the upper mounts.

*Except some models (e.g. strut with inset type brackets)

Camber-Adjustable Insert-Type Strut with Off-Center Sleeve

* For some models

For some vehicle models with insert-type struts, eccentric sleeves are used to enable camber angle adjustments. By rotating the sleeves, camber angle can be adjusted to either negative or positive, from the standard position.

Mounts Included

An easy-to-install mount, exclusively designed for each vehicle model, is included in the product kit.

Reinforced Rubber Upper Mount
(for Strut)
Pillow Ball Upper Mount
(for Strut)

We have devised a suitable mount for each vehicle type.
Pillow ball upper mounts for front strut suspensions feature camber adjustment.*

* Camber Angle Adjustment:

This means changing the contact patch of the tires during cornering, by changing the angle at which the tires touch the ground.

Exampe of Adjustment

Thread-Type Ride Height Adjustment

The ride height can be adjusted by moving the lower spring seat up or down.

Characteristic of this system is its simple structure and ease of use.

Twin-Tube System

Compared to the regular mono-tube system, twin-tube attains longer strokes with a smaller repulsive force, resulting in high ride comfort.

Roads may have all sorts of surface conditions. This calls for shock absorbers with ample stroke, that operate smoothly.

Thanks to flexible strokes, you can negotiate gaps and bumps steadily on rough roads, meaning a smooth ride at low speed and stability at high speed.

Overhaul/Revalving Available

Like most TEIN shock absorbers, FS2 can be overhauled to restore its original performance.
During overhaul, we also offer revalving service: you can have the damping force setup updated to suit your preferences.

Our after-sales service adds to the joy of using our products.

Compatible with EDFC Series (Optional)

The EDFC Series offer easy damping force adjustment from the driver's seat.*

* Some vehicle models are not compatible

A motor instead of adjustment dial

Please note: the example in the photo is not FS2

EDFC Series Lineup

EDFC5 page
EDFC5 page

Electronic Damping Force Controller,
Featuring Auto-Adjustment

  • Individual Wheel Control
  • Jerk-Reactive Adjustment
  • Cornering-Reactive
  • Accel/Deceleration-Reactive
  • Speed-Reactive
  • Wireless Control
  • AI (Learning Function)

Electronic Damping Force Controller, Featuring Auto-Adjustment

  • Individual Wheel Control
  • Cornering-Reactive
  • Accel/Deceleration-Reactive
  • Speed-Reactive
  • Wireless Control

High Durability and Reliability

Optimal Dust Boot

Thanks to its smooth compression and high durability, the dust boot guards the piston rod from damage, and keeps foreign material out of the shock absorber.

(Some vehicles use their OE dust boots)

No-Sag Spring

Cold formed with SAE9254 steel (minimum tensile strength 200 kgf/mm2), our springs are outstandingly sag-proof and boast extremely stable quality.

Superior rust protection is ensured with a highly durable powder coating that does not peel or flake. Our high-quality springs can be used without worries, in any conditions.

High-Performance Damper Oil

Since TEIN's damper oil maintains a stable viscosity in a broad temperature range, it sustains smooth strokes and reliable damping force in a variety of circumstances.

Due to excellent anti-foaming properties, it's resistant to cavitation (bubble forming). Since it's strong against heat too, it's suitable for fierce sport driving as well.

Furthermore, the damper oil keeps up its superior performance long-term, because it's resistant to deterioration over time.


Special Surface Treatment "ZTP Coating" & TEIN-Green Powder Coat
ZTP Coating

Our unique ZTP Coating surface treatment is abrasion resistant against gravel/debris and further enhancesrust/corrosion resistance.

With zero claims for stuck parts due to rust in 500,000 shock absorbers, TEIN shock absorbers are amazingly rustproof. We're confident of customer satisfaction even in coastal areas or regions with heavy snowfall.

Also, a bright TEIN-green powder paint provides extremely strong and durable barrier, yet this painting technique cuts pollution to a bare minimum with no harmful organic solvents used.

Superior durability and corrosion resistance are achieved by TEIN's patented 2-Layer, 1-Bake powder coating method, which uses 2 layers of anti-rust paint on a blasted surface.
(Japanese patent number 4347712)

>>We're confident of TEIN shock absorbers' surface treatment!