Code No. 80230-AF001V
*Discontinued.
Ultimate Street Damper with Latest Theory Based on MAX IV GT
▲The model in the photo is GVF.
Application
| Engine | EJ25(TURBO) |
|---|---|
| Model Year | 09/02 - 14/08 |
| Remarks | Height data is based on GRF. |
Specification
| FRONT | REAR | |
|---|---|---|
| Damping force adjustment | 30 steps | 30 steps |
| Base valve | - | - |
| Height adjustable lower bracket | ○ | ○ |
| Upper mount | Spherical bearing | Rubber |
| Inverted/Normal type | Inverted | Normal |
| 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 ) |
| Factory *2 | Test data | Adjustable range High - Low *3 |
Drivable range High - Low *4 |
||
|---|---|---|---|---|---|
| FRONT | Ride height *1 | 652 | ← | 678 ～ 635 | 678 ～ 647 |
| Against stock | -26 | ← | 0 ～ -43 | 0 ～ -31 | |
| REAR | Ride height *1 | 653 | ← | 676 ～ 639 | 676 ～ 641 |
| Against stock | -23 | ← | 0 ～ -37 | 0 ～ -35 | |
*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 ) | 49+19 ( 5+2=7 ) |
| Free height (mm) | 250 | 200 |
| Spring type | Straight | Straight |
| Recommended range to change spring rate N/mm(kgf/mm) | ±20 ( 2 ) | ±20 ( 2 ) |
Specification of damper
| F | R | |
|---|---|---|
| Damping force (Rebound/Damping)N* | 1000 / 500 | 350 / 350 |
| Default position of dial | 15 | 15 |
| Remaining damper stroke (Rebound/Damping)mm | 65 / 61 ( 11 ) | 74 / 52 ( 2 ) |
* 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) |
265 | ← | 289 | 260 | 257 | ← | 274 | 248 |
| Spring Set length(mm) |
247 | ← | ← | ← | 255 | ← | ← | ← |
| Length to ride hight adjuster (mm) |
33 | ← | 57 | 28 | 9 | ← | 26 | 0 |
| Lever ratio | 1.10 | 1.38 | ||||||
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.
Test vehicle information
| F | R | ||
|---|---|---|---|
| Vehicle weight kg | 893 (890) | 627 (590) | |
| Tire size (Air pressure) kPa | 245 / 40 - 18 ( 230 ) | 245 / 40 - 18 ( 190 ) | |
| Wheel size | 9.0 JJ × 18 off 45 | 9.0 JJ × 18 off 45 | |
| Alignment (Toe/Camber) |
Test data | 0 mm / -2°00' | +1.8 mm / -2°00' |
| Standard value | 0 ± 3 mm / -0°40' ± 45' | 0 ± 3 mm / -1°35' ± 45' | |
* Test data at HKS.
Parts List * It may be changed without prior notice.
Point
"Ultimate Street Damper" developed under supervision by rally driver Mr. Toshihiro Arai. Without being too stiff, the supple and tractable stroke creates persistent and stable grip and adequate load shift so the controllability is enhanced to maximize the rewarding feeling of driving. Understeer at high speed corners, which are typical in many 4wd cars, has also been suppressed to the approval of Mr. Arai. The spring rate is rather low; however, the bump rubbers act as 2kgf/mm sub-springs so the handling and road holding performance are much better than expected.
The best handling dial position Rally driver Mr. Toshihiro Arai selected at the time of testing at Gunsai is as follows: GR: F20/R12 and GV: F20/R15
The value within the parenthesis under the stroke section is the stroke length to the bump rubber.
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