Code No. 80230-AM003
*Discontinued.
Awesome control and comfort ride on the street for a sporty drive. The new Max IV sporty suspension.
▲The model in the photo is CP9A(VI).
Application
| Engine | 4G63 |
|---|---|
| Model Year | 98/01 - 98/12 |
| Remarks | Testing confirmed on EVO IV(6MT) model. |
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) | ○ ( 19.8 ) | ○ ( 19.8 ) |
| Factory *2 | Test data | Adjustable range High - Low *3 |
Drivable range High - Low *4 |
||
|---|---|---|---|---|---|
| FRONT | Ride height *1 | 640 | ← | 676 ～ 610 | 676 ～ 618 |
| Against stock | -46 | ← | -10 ～ -76 | -10 ～ -68 | |
| REAR | Ride height *1 | 620 | ← | 648 ～ 582 | 648 ～ 587 |
| Against stock | -28 | ← | 0 ～ -66 | 0 ～ -61 | |
*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) | 69 ( 7 ) | 59 ( 6 ) |
| Free height (mm) | 200 | 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 / 330 | 730 / 200 |
| Default position of dial | 15 | 15 |
| Remaining damper stroke (Rebound/Damping)mm | 60 / 53 | 70 / 65 |
* 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) |
283 | ← | 307 | 275 | 390 | ← | 407 | 390 |
| Spring Set length(mm) |
236 | ← | 226 | 254 | 246 | ← | 241 | 272 |
| Length to ride hight adjuster (mm) |
53 | ← | 87 | 27 | 61 | ← | 83 | 35 |
| Lever ratio | 1.05 | 1.28 | ||||||
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.
Test vehicle information
| F | R | ||
|---|---|---|---|
| Vehicle weight kg | 841 (820) | 570 (540) | |
| Tire size (Air pressure) kPa | 225 / 45 - 17 ( 220 ) | 225 / 45 - 17 ( 190 ) | |
| Wheel size | 7.5 JJ × 17 off 38 | 7.5 JJ × 17 off 38 | |
| Alignment (Toe/Camber) |
Test data | 0 mm / -1°30' | in 2 mm / -1°30' |
| Standard value | 0 ± 3 mm / -1°00' ± 30' | in 3 ± 2 mm / -1°00' ± 30' | |
* Test data at HKS.
Parts List * It may be changed without prior notice.
Point
・We have developed MAX IV for comfortable in the town drive and have competitive drive at the track. However the main use should be street, not the racing. The smooth movement of the suspension provide comfortable ride. The Evo is a sporty car so we have set it to suit it. HKS has developed MAX IV from 0, so it has 1 kg up of front spring from MAX III and it has better roadholding and less under steer. MAX IV has awesome drive feeling and have better performance.
* Rear spring seat has 374mm shortest case and length at 31mm thread position for avoid interference.
* If rear tire interfere with fender when bumping, please extend the case length and use bump touch. But if it extends too long, it will be uncomfortable by bump. So please make it a relevant length.
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