HKS Hipermax IV SP Toyota Yaris GR Coilover
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 | 〇 | 〇 |
| 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) |
| 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.
This product is compatible with the following vehicles
| Vehicle Make | Vehicle Model | Vehicle Variant | From | To | Engine | Notes |
| Toyota | Yaris | GR | 2021 | 0 | G16E-GTS | 1.6L - 4WD Petrol |
Whether it is engine, exhaust, suspension, or drive-train systems, there is no substitute for the performance, quality and reliability of HKS. Part-Box/Co-ordSport are an approved distributor for HKS performance and tuning products.
For over 35 years, HKS products have been put to the test in drag racing, road racing, rallying, and top speed trials. HKS equipped vehicles have captured numerous racing championships and hold claim to a myriad of competition records using many “off the shelf”, race proven HKS components. As a result, HKS has been synonymous with “performance” in the automotive aftermarket industry for the past 35+ years.
