HKS Hipermax IV GT Coilovers – 06-07 Subaru WRX
Features:Natural steering feeling so that a driver can trace the line as desired was pursued, and smooth cornering as STI's unique handling characteristic.Focusing on driving stability during cornering to match the vehicle's characteristics, supple damper
Features:
- Natural steering feeling so that a driver can trace the line as desired was pursued, and smooth cornering as STI’s unique handling characteristic.
- Focusing on driving stability during cornering to match the vehicle’s characteristics, supple damper movement can stabilize the vehicle body movement so the tires can continuously contact even on rough road surfaces.
- The stock rear suspension’s stiffness was improved so driving comfort can be maintained under long-distance driving maintaining its sportiness.
- Utilizing the helper springs in both front and rear dampers enables to secure the stroke of the extension side as possible.
| FRONT | REAR | |
|---|---|---|
| Damping force adjustment | 30 steps | 30 steps |
| Base valve | – | – |
| Height adjustable lower bracket | ||
| Upper mount | Rubber | 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 ) | ( 4.7 ) |
Ride Height
| Factory *2 | Test data | Adjustable range High – Low *3 |
Drivable range High – Low *4 |
||
|---|---|---|---|---|---|
| FRONT | Ride height *1 | 647 | 688 599 | 680 599 | |
| Against stock | -41 | 0 -89 | -8 -89 | ||
| REAR | Ride height *1 | 655 | 680 590 | 680 590 | |
| Against stock | -25 | 0 -90 | 0 -90 |
*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.
Spring of Full Kit
| F | R | |
|---|---|---|
| Spring rate N/mm(kgf/mm) | 79 ( 8 ) | 59 ( 6 ) |
| Free height (mm) | 220 | 170 |
| Spring type | Straight Barrel type | 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* | 971 / 412 | 392 / 147 |
| Default position of dial | 15 | 15 |
| Remaining damper stroke (Rebound/Damping)mm | 45 / 68 | 49 / 67 |
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