Code No. 80230-AT023A
*Discontinued.
An updated MAX IV GT with improved handling and comfort, an ulimate street suspension.
▲The above photo is an item for DB22.
Application
| Engine | B48 |
|---|---|
| Model Year | 19/05 - |
| Remarks | Note: When height is adjusted various parts will be misaligned. Including Radar, Camera, wheel alignment, and can cause the Toyota Safety Sense system to malfunction. |
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 | Separated |
| Spring rate change at factory | 〇 | ○ |
| Damping force adjustment with wire | - | ‐ |
| Helper spring (Spring rate N/mm) | - | - |
| Factory *2 | Test data | Adjustable range High - Low *3 |
Drivable range High - Low *4 |
||
|---|---|---|---|---|---|
| FRONT | Ride height *1 | 657 | ← | 686 ～ 634 | 682 ～ 634 |
| Against stock | -35 | ← | -6 ～ -58 | -10 ～ -58 | |
| REAR | Ride height *1 | 666 | ← | 689 ～ 633 | 689 ～ 633 |
| Against stock | -27 | ← | -4 ～ -60 | -4 ～ -60 | |
*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 ) | 118 ( 12 ) |
| Free height (mm) | 200 | 250 |
| Spring type | Straight | Straight |
| Recommended range to change spring rate N/mm(kgf/mm) | ±10(1) | ±20 ( 2 ) |
Specification of damper
| F | R | |
|---|---|---|
| Damping force (Rebound/Damping)N* | 1133 / 515 | 633 / 417 |
| Default position of dial | 15 | 15 |
| Remaining damper stroke (Rebound/Damping)mm | 38 / 51 | 54 / 60 |
* 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 | 319 | ← | 339 | 291 |
| Spring Set length(mm) |
195 | ← | 183 | 200 | - | - | - | - |
| Length to ride hight adjuster (mm) |
20 | ← | 42 | 0 | 42 | ← | 56 | 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 | - (710) | - (700) | |
| Tire size (Air pressure) kPa | 225 / 50 - 17 ( 220 ) | 255 / 45 - 17 ( 220 ) | |
| Wheel size | 7.5 J × 17 | 8.5 J × 17 | |
| Alignment (Toe/Camber) |
Test data | in 0.4 mm / -2°23' | in 1.2 mm / -2°34' |
| 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
With the latest setting technology, the ability to be able to drive comfortably and with stability, while still not losing any of the performance on rough street roads is capable.
While the Stock Electrical Shock Absorber performs great. Having conventional shocks gives the driver more control. Our intent is to give the driver various controls and settings to be able to adjust the car to their personal style.
The main development vehicle is a B48 engine that has been boosted-up with 19-inch-high grip radials. These settings were made with the users’ intent in mind.
Dampening is easily adjustable by using a dial. Adjusting this will help the vehicle’s handling on acceleration or deceleration. This allows the rear tires to be able to gain more traction.
The front adopts the traditional HIPERMAX inverted structure, and the cylinder outer is penetrated to the upright mounting part, so that the stroke can be secured even when the vehicle height is lowered.
In addition, a slide type pillow upper has been adopted to the strut making it easier to add camber angle.
The rear upper plate has been machined out of strong, yet lightweight aluminum to consider weight reduction and performance. A rubber mount has been added to the rear upper for ride comfortability.
A straight wound spring type has been adopted for both the front and the rear; Spring rates are easily changeable.
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