Code No. 80230-AF003V
*Discontinued.
Ultimate Street Damper with Latest Theory Based on MAX IV GT
The model in the photo is GDB.
Application
Engine | EJ20(TURBO) |
---|---|
Model Year | 04/06 - 07/06 |
Remarks |
Specification
FRONT | REAR | |
---|---|---|
Damping force adjustment | 30 steps | 30 steps |
Base valve | - | - |
Height adjustable lower bracket | ○ | ○ |
Upper mount | ||
Inverted/Normal type | Inverted | Inverted |
Damper/Spring layout | Coilover | Coilover |
Spring rate change at factory | Possible | Possible |
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 | 642 | ← | 693 ~ 635 | 693 ~ 637 |
Against stock | -46 | ← | 0 ~ -58 | 0 ~ -56 | |
REAR | Ride height *1 | 638 | ← | 667 ~ 628 | 667 ~ 634 |
Against stock | -28 | ← | 0 ~ -38 | 0 ~ -33 |
*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) | 59+19 ( 6+2=8 ) | 38+19 ( 4+2=6 ) |
Free height (mm) | 250 | 250 |
Spring type | Straight | Straight Barrel type |
Recommended range to change spring rate N/mm(kgf/mm) | ±20 ( 2 ) | +20 ( 2 ) |
Specification of damper
F | R | |
---|---|---|
Damping force (Rebound/Damping)N* | 820 / 400 | 400 / 220 |
Default position of dial | 15 | 15 |
Remaining damper stroke (Rebound/Damping)mm | 70 / 56 (6) | 78 / 91 (11) |
* 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) |
294 | ← | 336 | 285 | 343 | ← | 369 | 340 |
Spring Set length(mm) |
282 | ← | ← | ← | 297 | ← | ← | 299 |
Length to ride hight adjuster (mm) |
12 | ← | 54 | 3 | 122 | ← | 148 | 117 |
Lever ratio | 1.10 | 1.08 |
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.
Test vehicle information
F | R | ||
---|---|---|---|
Vehicle weight kg | 897 (880) | 612 (580) | |
Tire size (Air pressure) kPa | 235 / 40 - 18 ( 220 ) | 235 / 40 - 18 ( 220 ) | |
Wheel size | 8.5 JJ × 18 off 50 | 8.5 JJ × 18 off 50 | |
Alignment (Toe/Camber) |
Test data | 0 mm / -1°12' | +2 mm / -1°48' |
Standard value | 0 ± 3 mm / -0°30' ± 45' | 0 ± 3 mm / -1°40' ± 45' |
* Test data at HKS.
Parts List * It may be changed without prior notice.
Point
"Ultimate Street Damper" developed for VAB model under supervision by rally driver Mr. Toshihiro Arai. Maintaining handlability and stability to enjoy driving on various road conditions were focused to develop this damper. Then, the genuine damper delivering the best ride comfort not only for the driver but also passengers was developed. The damping force tends to be stiff to secure the ride quality; however, it may cause the reduction of the tire’s surface pressure resulting in lowering the limit grip force. Also, the ride quality may deteriorate due to the vertical G force. Reviewing the geometry and stroke, establishing required spring rate and damping force, completely eliminating unnecessary elements achieved the handlability and stability in a high level that allows this product to deliver the outstanding road holding performance. Also, Mr. Arai was impressed of the improvement of understeering, which is a typical characteristic of GDB. With the latest suspension made by the latest technology, transformation of a car will be experienced. Smooth and appropriate steering and load movement is required to handle a car with this product developed under supervision by rally driver Mr. Toshihiro Arai.
New bump rubbers act as sub-springs; therefore, to adjust the vehicle height, change the case length, and to adjust the timing when the bump rubber touches, change the case length and preload.
The tie rod may come in contact with the stabilizer when the damper is compressed under full-braking.
The vehicle height except the tested height is the calculated value; therefore, actual height may be different.
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