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.
The model in the photo is FC3.
Application
| Engine | L15B |
|---|---|
| Model Year | 17/05 - |
| Remarks | Exclusive for Si grade. Front knuckle insertion diameter: φ53.8mm |
Specification
| FRONT | REAR | |
|---|---|---|
| Damping force adjustment | 30 steps | 30 steps |
| Base valve | - | - |
| Height adjustable lower bracket | - | 〇 |
| Upper mount | Rubber | Rubber |
| Inverted/Normal type | Inverted | Normal |
| Damper/Spring layout | Coilover | Separated |
| Spring rate change at factory | Possible | Possible |
| Damping force adjustment with wire | - | 〇 |
| Helper spring (Spring rate N/mm) |
- | - |
| Factory *2 | Test data | Adjustable range High - Low *3 |
Drivable range High - Low *4 |
||
|---|---|---|---|---|---|
| FRONT | Ride height *1 | 647 | ← | 674 ～ 626 | 657 ～ 626 |
| Against stock | -27 | ← | 0 ～ -48 | -17 ～ -48 | |
| REAR | Ride height *1 | 658 | ← | 683 ～ 617 | 683 ～ 648 |
| Against stock | -26 | ← | -1 ～ -67 | -1 ～ -36 | |
*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) | 39 ( 4 ) | 39 ( 4 ) |
| Free height (mm) | 220 | 220 |
| Spring type | Straight Barrel type | Straight Barrel type |
| Recommended range to change spring rate N/mm(kgf/mm) | + 19 ( 2 ) | + 10 ( 1 ) |
Specification of damper
| F | R | |
|---|---|---|
| Damping force (Rebound/Damping)N* | 343 / 157 | 314 / 108 |
| Default position of dial | 15 | 15 |
| Remaining damper stroke (Rebound/Damping)mm | 60 / 58 | 64 / 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) |
230 | ← | 230 | 230 | 370 | ← | 396 | 360 |
| Spring Set length(mm) |
199 | ← | 189 | 220 | - | - | - | - |
| Length to ride hight adjuster (mm) |
21 | ← | 31 | 0 | 38 | ← | 61 | 29 |
| Lever ratio | 1.00 | 1.07(spg) , 0.94(dmp) | ||||||
* Refer to the above explanation *3 of ride height information for drivable high and low limitations.
Test vehicle information
| F | R | ||
|---|---|---|---|
| Vehicle weight kg | - (804) | - (506) | |
| Tire size (Air pressure) kPa | 235 / 40 - 18 ( 225 ) | 235 / 40 - 18 ( 200 ) | |
| Wheel size | 8.0 JJ × 18 inset 50 | 8.0 JJ × 18 inset 50 | |
| Alignment (Toe/Camber) |
Test data | 0 mm / -0°30' | IN 1.9 mm / -1°42' |
| Standard value | IN 0 ± 2 mm / -0°20' ± 30' | IN 2 +2 -1 mm / -1°20' ± 45' | |
* Test data at HKS.
Parts List * It may be changed without prior notice.
Point
The stock suspension is comfortable and has a good feeling of flexibility, which makes it fun to control the vehicle's movement and force, but it is a little stiff in the rear and roll is too large even in SPORT mode.
With this kit, the amount of roll is reduced to achieve a lighter cornering. In addition, the lowering not only gives the Si the right look, but also improves the comfort.
Like the S660, the front suspension has a severe stroke structure. For the ultimate performance, we designed the product without adjustment functions the overall length, and the internal structure was further improved. HKS's traditional inverted mono-tube is selected. It provides rigidity and stroke capacity.
This kit Includes the upper plate adjusting bolts for front camber alignment. The camber can either be fixed at the stock standard position or adjusted by ±0.5°.
A cable for rear damping adjustment is provided as standard equipment, allowing simple damping adjustment without having to jack up the car or remove the damper, as is often the case with other manufacturers. Directly wound barrel type springs allow more freedom in setting.
Compared to the regular HIPERMAX series, this product has a more comfortable ride, but unlike the regular grade products, this Si is specially designed to reduce rear roll. We pursued the best balance between comfort and handling.
When you tighten the damping dial, you get a more solid feeling. If you prefer solid feeling, or when driving at high speed, you are free to adjust it according to your preference.
You can avoid the displayed error when the stock suspension is removed by installing a canceller (optional ).
Note: It is required to remove the front knuckle and the hub assembly to remove the stock suspension. We recommend that you have the product installed by an auto mechanic at a professional store, mass retailer, or dealer.
