HKS Hipermax IV GT Suspension Lexus IS250 GSE30

Code No. 80230-AT011

▲The above photo is an item for ZN6.

Awesome control and comfort ride on the street for a sporty drive. The new Max IV sporty suspension.

Application

Specification

Engine

4GR-FSE

Model Year

13/05 -

Remarks

Developed with F SPORT.
Vehicle height data of IS300h

FRONT

REAR

Damping force adjustment

30 steps

30 steps

Base valve

-

-

Height adjustable lower bracket

○

○

Upper mount

Rubber

Rubber

Inverted/Normal type

Normal

Normal

Damper/Spring layout

Coilover

Separated

Spring rate change at factory

Possible

Possible

Damping force adjustment with wire

-

○

Helper spring
(Spring rate N/mm)

○ ( 4.7 )

-

Ride Height

mm

Factory *2

Test data

Adjustable range
High - Low *3

Drivable range
High - Low *4

FRONT

Ride height *1

649

←

675 ～ 603

675 ～ 635

Against stock

-26

←

0 ～ -72

0 ～ -40

REAR

Ride height *1

638

←

663 ～ 602

663 ～ 602

Against stock

-25

←

0 ～ -61

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)

78 ( 8 )

88 ( 9 )

Free height (mm)

250

250

Spring type

Straight

Straight

Recommended range to change spring rate N/mm(kgf/mm)

±10 (-1～+1)

+10 (0～+1)

Specification of damper

F

R

Damping force (Rebound/Damping)N*

1200 / 350

750 / 250

Default position of dial

15

15

Remaining damper stroke (Rebound/Damping)mm

65 / 40

65 / 70

* 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)

422

←

440

422

459

←

487

446

Spring
Set length(mm)

289

←

289

299

-

-

-

-

Length to ride hight
adjuster (mm)

34

←

52

24

R:51 / L:54

←

R:64 / L:67

R:29 / L:32

Lever ratio

1.40

2.00 (spg) , 1.29 (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

-

-

Tire size (Air pressure) kPa

225 / 35 - 19 ( 240 )

255 / 30 - 19 ( 240 )

Wheel size

8.5 JJ × 19 inset 45

9.5 JJ × 19 inset 45

Alignment
(Toe/Camber)

Test data

0 mm / -1°12'

+1.8 mm / -2°18'

Standard value

-

-

* Test data at HKS.

Parts List * It may be changed without prior notice.

Point

We have set it for the mainly street use with the F SPORT type. First, we set the vehicle height low for cool look. You can adjust the damper setting because it’s a height adjustable lower bracket type. We try to keep the stock’s stroke and drive feel. But there is some rolling, and N mode and S/S+ mode has some wrongness. We adjusted for these problems and have even smoother driving experience. Also we adjusted and set the weight allotment for springs and dampers for best steering and less rolling. But still have the great feeling for human sense. We have set enough stroke as the stock to reduce the uncomfortable reaction from road surface. We also checked with electronic device for stability and comfortable dr...