Description
Code No. 80250-AT003
The sport model to have a comfortable drive even in the winding road.
The model in the photo is DB42.
Application
| Engine | B58 |
|---|---|
| Model Year | 19/05 – |
| Remarks | Note: Due to lowering the vehicle, a radar camera irradiated range becomes narrower and TTS (ToyotaSupraSafety) malfunction may occur with misalignment of the center. |
Specification
| FRONT | REAR | |
|---|---|---|
| Damping force adjustment | 30 steps | 30 steps |
| Base valve | – | – |
| Height adjustable lower bracket | ○ | ○ |
| Upper mount | Spherical bearing | Spherical bearing |
| Inverted/Normal type | Inverted | Normal |
| Damper/Spring layout | Coilover | Separated |
| Spring rate change at factory | ‐ | ○ |
| Damping force adjustment with wire | – | ‐ |
| Helper spring (Spring rate N/mm) |
○ ( 4.7 ) | ○ ( 19.8 ) |
| Factory *2 | Test data | Adjustable range High – Low *3 |
Drivable range High – Low *4 |
||
|---|---|---|---|---|---|
| FRONT | Ride height *1 | 662 | 659 | 679 ～ 632 | 679 ～ 632 |
| Against stock | -25 | -28 | -8 ～ -55 | -8 ～ -55 | |
| REAR | Ride height *1 | 673 | ← | 693 ～ 626 | 693 ～ 626 |
| Against stock | -25 | ← | -5 ～ -72 | -5 ～ -72 | |
*1. Height from road surface to fender arch.
*2. Height at factory is the data tested at HKS with the setting of Full Kit. (HKS’ recommended setting.)
*3. Adjustable range (However, the lowest value may not be road legal.
Even within the adjustable range, car body, arm etc. may contact. In such case, it will be hard to drive.
Damper oil leakage or any other problems caused by low ride height setting from the factory setting will void the warranty of the product.)
*4. Drivable range that there is no contact of car body or arms etc. (However, change of tire/wheel size may cause a problem.)
Caution). Actual data depends on each vehicle.
Kit information
Spring of Full Kit
| F | R | |
|---|---|---|
| Spring rate N/mm(kgf/mm) | 137 ( 14 ) | 176 ( 18 ) |
| Free height (mm) | 150 | 200 |
| Spring type | 直巻※専用 | Straight |
| Recommended range to change spring rate N/mm(kgf/mm) | – | -20 ( 2 ) |
Specification of damper
| F | R | |
|---|---|---|
| Damping force (Rebound/Damping)N* | 1859 / 402 | 966 / 437 |
| Default position of dial | 15 | 15 |
| Remaining damper stroke (Rebound/Damping)mm | 43 / 46 | 57 / 57 |
* The value of the damping force is at piston speed of 0.1m/sec.
Setting data
| F | R | |||||||
|---|---|---|---|---|---|---|---|---|
| Default | Test | Drivable limit High * |
Drivable limit Low * |
Default | Test | Drivable limit High * |
Drivable limit Low * |
|
| Length of case (mm) |
279 | ← | 289 | 264 | 324 | ← | 341 | 291 |
| Spring Set length(mm) |
189 | 192 | 184 | 200 | – | – | – | – |
| Length to ride hight adjuster (mm) |
26 | 23 | 41 | 0 | 50 | ← | 62 | 22 |
| Lever ratio | 1.18 | 1.69(spg) , 1.20(dmp) | ||||||
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.
Test vehicle information
| F | R | ||
|---|---|---|---|
| Vehicle weight kg | 785.5 (780) | 744 (740) | |
| Tire size (Air pressure) kPa | 255 / 35 – 19 ( 220 ) | 275 / 35 – 19 ( 220 ) | |
| Wheel size | 9.0J × 19 | 10.0J × 19 | |
| Alignment (Toe/Camber) |
Test data | in 0.4 mm / -3°50′ | in 1.2 mm / -2°10′ |
| Standard value | in 3.1 mm ± 2.3 mm / -1°45′ ± 0°30′ | in 2.7 mm ± 2.3 mm / -2°00′ ± 0°25′ | |
* Test data at HKS.
Parts List * It may be changed without prior notice.
Point
Mr. Manabu Orido (also known as Mr. Supra) set a 1.682s faster time on racing track at Fuji International Speedway with only suspension upgrade.
This suspension utilized a conventional shock absorber rather than factory electronically controlled one and a vehicle is easier to understand and to control according to the driver’s intention.
Using the high rate spring provides a smooth ride without too stiff feeling and at the same time helps to translate a feedback from tires.
Using HKS traditional inverted type at the front. To ensure the stroking amount and height adjustable range, HKS designed special outer cover.
Adjustment type pillow upper allows to adjust the camber angle.
The billet aluminum upper plate is used at the rear. This is for weight saving without losing the necessary strength.
The straight wound spring is used at both front and rear allowing to easily change spring rates.
Note: Error canceler is required due to removed factory Electronic Control Shock Absorber.
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