Description
HKS Hipermax S BNR34
Code No. 80300-AN007
Going beyond just ride comfort or handling performance, a new standard of “Driving Comfort” aims for comfort in ride but also in the peace of mind generated by handling performance and drivability . An uncompromising balance which delivers on all the demands of street driving.
Application
| Engine | RB26DETT |
|---|---|
| Model Year | 99/01 – 02/08 |
| Remarks |
Specification
| FRONT | REAR | |
|---|---|---|
| Damping force adjustment | 30 steps | 30 steps |
| Base valve | – | – |
| Height adjustable lower bracket | 〇 | 〇 |
| Upper mount | Rubber | Rubber |
| Inverted/Normal type | Normal | Normal |
| Damper/Spring layout | Coilover | Coilover |
| Spring rate change at factory | Possible | Possible |
| Damping force adjustment with wire | – | 〇 |
| 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 | 662 | ← | 695 ～ 626 | 695 ～ 626 |
| Against stock | -44 | ← | -11 ～ -80 | -11 ～ -80 | |
| REAR | Ride height *1 | 664 | ← | 699 ～ 631 | 699 ～ 631 |
| Against stock | -35 | ← | 0 ～ -68 | 0 ～ -68 | |
*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) | 88 ( 9.0 ) | 78 ( 8.0 ) |
| Free height (mm) | 200 | 250 |
| Spring type | Straight | Straight |
| Recommended range to change spring rate N/mm(kgf/mm) | ±10 ( 1 ) | ±10 ( 1 ) |
Specification of damper
| F | R | |
|---|---|---|
| Damping force (Rebound/Damping)N* | 927 / 260 | 564 / 324 |
| Default position of dial | 15 | 15 |
| Remaining damper stroke (Rebound/Damping)mm | 60 / 56 | 74 / 95 |
* 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) | 275 | ← | 305 | 269 | 507 | ← | 535 | 474 |
| Spring Set length(mm) | 241 | ← | 241 | 267 | 319 | ← | 312 | 319 |
| Length to ride hight adjuster (mm) | 37 | ← | 67 | 5 | 139 | ← | 174 | 106 |
| Lever ratio | 1.11 | 1.00 | ||||||
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.
Test vehicle information
| F | R | ||
|---|---|---|---|
| Vehicle weight kg | 900 (880) | 721 (680) | |
| Tire size (Air pressure) kPa | 245 / 40 – 18 ( 200 ) | 245 / 40 – 18 ( 200 ) | |
| Wheel size | 9 JJ × 18 inset 24 | 9 JJ × 18 inset 24 | |
| Alignment (Toe/Camber) | Test data | in 0 mm / -1°30′ | in 2 mm / -2°00′ |
| Standard value | in 1 ± 1 mm / -0°50′ ± 0°45′ | in 2.6 ± 2.6 mm / -1°05′ ± 0°30′ | |
Parts List * It may be changed without prior notice.
Point
Based on the 20SPEC, further improvements have been made and refined.
This time, we set it up with the suppression during the swell, further improving ride comfort, and achieving a high level of balance with sports performance.
By using the PVS and high flow rate needle, we have succeeded in creating a more ideal damper force characteristic.
By reviewing the suspension rate, we were able to create a suspension kit that is easy to use from comfort to sport.
Testing was conducted on a car equipped with NISMO arms.
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