(SUSPENSION) HIPERMAX GR86/BRZ Cup for BRZ (ZD8)
Code No. 86CUP-AT001
The model in the photo is ZN8.
■Summary
- A professional series designated product developed for the domestic racing event "TOYOTA GAZOO Racing GR86/BRZ Cup 2023".
- Based on the HIPERMAX R, tests were conducted on tires for the 2023 series according to the GR86/BRZ CUP vehicle regulations.
- We welcomed Mr. Nobuteru TANIGUCHI as the development driver and set up the product.
- Please adjust the damping force depending on the wear conditions of the tires, for example, setting it strong at qualifying or set weak at the final.
- The roll amount is optimally tuned by utilizing the bump rubber actively that HKS has been studying for many years.
- ASEA standard registered products. T.R.A. Approval Number: T.R.A. 230322-147
- Since the product is set to focus on driving performance on a circuit, please be careful when driving on open roads.
- This product can be overhauled, but the specification change service is not available.
Application
| Engine | FA24 |
|---|---|
| Model Year | 21/08 - |
| Remarks |
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 | Coilover |
| Spring rate change at factory | Impossible | Impossible |
| 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 | 648 | ← | 664 ～ 630 | 664 ～ 630 |
| Against stock | -16 | ← | 0 ～ -34 | 0 ～ -34 | |
| REAR | Ride height *1 | 641 | ← | 669 ～ 612 | 669 ～ 612 |
| Against stock | -28 | ← | 0 ～ -57 | 0 ～ -57 | |
*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 ( 8.0 ) | 98 ( 10.0 ) |
| Free height (mm) | 170 | 170 |
| Spring type | Straight | Straight |
| Recommended range to change spring rate N/mm(kgf/mm) | - | - |
Specification of damper
| F | R | |
|---|---|---|
| Damping force (Rebound/Damping)N* | 1432 / 765 | 927 / 392 |
| Default position of dial | 15 | 15 |
| Remaining damper stroke (Rebound/Damping)mm | 36 / 51 | 22 / 49 |
* 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) |
222 | ← | 238 | 204 | 240 | ← | 261 | 222 |
| Spring Set length(mm) |
170 | ← | 157 | 170 | 166 | ← | 158 | 170 |
| Length to ride hight adjuster (mm) |
33 | ← | 62 | 15 | 35 | ← | 64 | 13 |
| Lever ratio | 1.00 | 1.32 | ||||||
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.
Test vehicle information
| F | R | ||
|---|---|---|---|
| Vehicle weight kg | - (700) | - (560) | |
| Tire size (Air pressure) kPa | 215 / 45 - 17 ( 240 ) | 215 / 45 - 17 ( 240 ) | |
| Wheel size | 7.5 JJ × 17 inset 44 | 7.5 JJ × 17 inset 44 | |
| Alignment (Toe/Camber) |
Test data | - | - |
| Standard value | in 0 ± 3 mm / 0°00' ± 1°00' | in 3 ± 3 mm / -1°30' ± 1°00' | |
* Test data at HKS.
Parts List * It may be changed without prior notice.
■Technologies used in the HIPERMAX for GR86/BRZ Cup
High-performance Fluid SRF*
HKS has developed a High viscosity special oil against the heat sag through overheating. In addition, by increasing the damping from the very low-speed range, we have achieved a reliable steering feeling, tidiness, and high stability.
*SRF : Super Response Fluid
High-tension spring LVS*
A high-strength special wire rod that is ideal for sports driving is used in the product.
A high-performance spring that has excellent response and flexibility. (Used for the front only)
*LVS : Low Vibration Spring
Spring Retainer
The spring retainer on the upper side of the spring is the standard equipment. Make low friction comes true without occurring the side force. It improves driving stability by following the posture of a car.
* The spring in the image is different from the actual product.
Point