MAX IV SP
GR YARIS
GR YARIS GXPA16

MAX IV SP

Code No. 80250-AT005

 

  

The sport model to have a comfortable drive even in the winding road.

 

 

 

 

Application

Engine G16E-GTS
Model Year 20/09 - 
Remarks This product is develop with JDM spec that called RZ High performance 1st edition(AWD)

Specification

  FRONT REAR
Damping force adjustment 30 steps 30 steps
Base valve - -
Height adjustable lower bracket
Upper mount Spherical bearing Spherical bearing
Inverted/Normal type Inverted Normal
Damper/Spring layout Coilover Separated
Spring rate change at factory Possible Possible
Damping force adjustment with wire - -
Helper spring
(Spring rate N/mm)
〇 (19.8) 〇 (19.8)
Ride Height mm
  Factory *2 Test data Adjustable range
High - Low *3
Drivable range
High - Low *4
FRONT Ride height *1 657 639 682 ~ 557 682 ~ 610
Against stock -26 -44 -1 ~ -126 -1 ~ -73
REAR Ride height *1 657 639 680 ~ 600 680 ~ 600
Against stock -25 -43 -2 ~ -82 -2 ~ -82

*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) 118 ( 12.0 ) 157 ( 16.0 )
Free height (mm) 150 170
Spring type Straight Straight
Recommended range to change spring rate N/mm(kgf/mm) -20(2)~+59(6) -20(2)~+78(8) ※5

Specification of damper

  F R
Damping force (Rebound/Damping)N* 1084 / 706 780 / 539
Default position of dial 15 15
Remaining damper stroke (Rebound/Damping)mm 45 / 42 56 / 41

* 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)
318 300 343 299 302 288 309 259
Spring
Set length(mm)
200 200 200 227 - - - -
Length to ride hight
adjuster (mm)
60 42 85 14 65 52 81 25
Lever ratio 1.02 1.42(spg) , 1.32(dmp)

* Refer to the above explanation *3 of ride height information for drivable high and low limitations.


Spring of Full Kit ※5: When changing the spring rate for the rear section, please change the spring length to 150 mm only if you choose 235 (24) N/mm (kgf/mm).


Test vehicle information

  F R
Vehicle weight kg 773 515
Tire size (Air pressure) kPa 255 / 35 - 18 ( 200/基準:220 ) 255 / 35 - 18 ( 200/基準:200 )
Wheel size 9.0 JJ × 18 inset 40 9.0 JJ × 18 inset 42
Alignment
(Toe/Camber)
Test data in 0 mm / -4°39' out 2 mm / -2°29'
Standard value in 1.8 ± 2.0 mm / -1°23' ± 0°45' in 2.2 ± 2.0 mm / -1°55' ± 0°45'

* Test data at HKS.


Parts List  * It may be changed without prior notice.

 


Point

We were testing several different spring rates, this is a set a spring rate that can be shared between track and street.
We have sought to improve stability and control, as well as the quality of the ride comfort.
Special damping force adjustment dial (rear section) is included to enable damping adjustment without jack-up even at low vehicle height. Loading method to the vehicle is also taken into consideration.
We have recommend F:16-18k and R:22-24k while using at a truck. It is more comfortable to drive on truck with extreme controllable.
If you change to F:16k/R:22k the action is milder and easier to manage. If you want to change the performance of the car aggressively, F:18k/R:24k is a good choice.
A track use, damping adjustment should be adjusted from F:D=10, R:D=8 to suit your preference.
In the test at Fuji Speedway, we had good results with the front upper mount assembly mounted at B and with variable camber/caster at the upper limit.
Note: Depending on the size of the wheel and tire, the front ride height may interfere with the tire.
The spring rate can change 2kg increments for both front and rear, and the spring length can be changed to 150mm only when R:24k is selected.
 
 



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