HKS Hipermax Max IV GT Coilovers 80230-AT003 for Lexus IS250 GS350 GS430

Description

HKS Hipermax Max IV GT Coilovers (80230-AT003) for
07-11 GS350 RWD
05-07 GS430 RWD
06-13 IS250 RWD
06-13 IS350 RWD
08-11 GS460 RWD
Ride Height
mm
Factory *2
Test data
Adjustable range
High - Low *3
Drivable range
High - Low *4
FRONT
Ride height *1
656
←
707 ～ 616
707 ～ 632
Against stock
-51
←
0 ～ -91
0 ～ -75
REAR
Ride height *1
672
665
704 ～　580　※5
704 ～　619
Against stock
-32
-39
0 ～ -98　※5
0 ～ -85
*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
250
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*
853 / 226
745 / 196
Default position of dial
15
15
Remaining damper stroke (Rebound/Damping)mm
55 / 60
74 / 81
* 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)
410
←
444
408
380
375
396
368
Spring
Set length(mm)
222
←
222
236
277
277
272
295
Length to ride hight
adjuster (mm)
87
←
121
71
44
39
65
9
Lever ratio
1.49
1.51
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.
Test vehicle information
F
R
Vehicle weight kg
884
801
Tire size (Air pressure) kPa
255 / 30 - 20 ( 260 )
275 / 30 - 20 ( 260 )
Wheel size
8.5 JJ × 20 off 42
9.5 JJ × 20 off 50
Alignment
(Toe/Camber)
Test data
0 mm / -1°24'
in 5 mm / -1°42'
Standard value
in 1 ± 2 mm / -0°15' ± 45'
in 3 ± 2 mm / -1°00' ± 45'
* Test data at HKS.
Parts List
* It may be changed without prior notice.
Point
・MAX IV production concept was aimed at "Comfort & Fun of steering". In normal driving, such as streets and highways has the exquisite taste of fine and comfortable ride with HKS large bore single-cylinder piston. The stock's a little stiffness is reduced. And for a big bump MAX IV gives smooth and mild response. Also the steering can be set in detail for your needs by setting up the damping.
・MAX IV is all length adjustable type, so that the height can be set to your needs and wants for your style.
・The standard dial for both front and back is the dial 15, and for smoother ride, set dial at 20 to 30. For European style suspension, set it at dial 3 to 5. The new design will not be stiff even under 10 steps setting.
・HKS has developed the MAX IV according to thorough data analysis of many cars in the market and tested them. We didn't only rate damping but also analyzed balance and stroke, which made this product more safe and fun to drive.
・We also redesigned the inner parts and developed new parts for MAX IV. MAX IV has new design of needle which gives more stable damping and steering characteristic at a low to mid speed range. We also revised dial adjustment by oil path and this new design makes even under 10 step dial, it will not be stiff.
・Please be careful with the later model setting since it has a different bumper design, the height of the fog lamp is different,
* We have confirmed MAX IV with HKS GT Supercharger Kit. We have checked with powered up cars, too, and this new design makes even under 10 step dial, it will not be stiff.
*5 get rid of the helper S/P
● Process for installation
・Required to make an hole for rear damping adjustment cable(rear interior)