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 GXPA16.
Application
| Engine | G16E-GTS |
|---|---|
| Model Year | 20/09Â -Â 24/03 |
| Remarks | Developed at RZ High performance 1st edition |
Specification
| Â | FRONT | REAR |
|---|---|---|
| Damping force adjustment | 30 steps | 30 steps |
| Base valve | - | - |
| Height adjustable lower bracket | ã | ã |
| Upper mount | Stock | Rubber |
| 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) | - | - |
| Â | Factory *2 | Test data | Adjustable range High - Low *3 | Drivable range High - Low *4 | |
|---|---|---|---|---|---|
| FRONT | Ride height *1 | 654 | â | 679 ï½ 634 | 679 ï½ 634 |
| Against stock | -25 | â | 0 ï½ -45 | 0 ï½ -45 | |
| REAR | Ride height *1 | 651 | â | 677 ï½ã630 | 677 ï½ã630 |
| Against stock | -26 | â | 0 ï½ -47 | 0 ï½ -47 | |
*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
| Â | F | R |
|---|---|---|
| Spring rate N/mm(kgf/mm) | 69 ( 7.0 ) | 59 ( 6.0 ) |
| Free height (mm) | 200 | 250 |
| Spring type | Straight Barrel type | Straight Barrel type |
| Recommended range to change spring rate N/mm(kgf/mm) | +10 ( 1 ) â» | +10 ( 1 ) â» |
Specification of damper
| Â | F | R |
|---|---|---|
| Damping force (Rebound/Damping)N* | 603 / 490 | 363 / 452 |
| Default position of dial | 15 | 15 |
| Remaining damper stroke (Rebound/Damping)mm | 45 / 61 | 49 / 65 |
* The value of the damping force is at piston speed of 0.1m/sec.
Setting data
| Â | F | R | ||||||
|---|---|---|---|---|---|---|---|---|
| Default | Test | Drivable limit High * | Drivable limit Low * | Default | Test | Drivable limit High * | Drivable limit Low * | |
| Length of case (mm) | 301 | â | 326 | 281 | 273 | â | 290 | 255 |
| Spring Set length(mm) | 203 | â | 203 | 203 | - | - | - | - |
| Length to ride hight adjuster (mm) | 20 | â | 45 | 0 | 40 | â | 58 | 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.
Test vehicle information
| Â | F | R | |
|---|---|---|---|
| Vehicle weight kg | 773ã(780) | 515ã(510) | |
| Tire size (Air pressure) kPa | 225 / 40 - 18 ( 220 ) | 225 / 40 - 18 ( 200 ) | |
| Wheel size | 8.0 JJ Ã 18 inset 45 | 8.0 JJ Ã 18 inset 45 | |
| Alignment (Toe/Camber) | Test data | in 0 mm / -3°00' | out 2 mm / -2°11' |
| 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
ã»Without sacrificing the stock ride quality, we have achieved a well-balanced level of ride comfort and sports performance, such as roll rigidity
ã»Damp force characteristics for smoothly driving on street and firm tenacity during fast corning are what we pursued. The stability and controllability at the limit range are much improved.
ã»After testing several different spring rates, the spring rate is set up to target from driving on the street to winding roads+α.
ã»If you are planning for hill climbs, mini track, or using high grip tire, we recommend you increase the spring rate.
ã»Please note that the free length of the spring will be changed for both F and R when the rate is increased. (*) Recommended damp force adjustment setting for rate up is Front: D=15 / Rear: D=13.
ã»If you are looking for sport driving, we recommend you set the rear toe out, which makes understeer hardly occur, allowing the driver to accelerate earlier while cornering. It improves the vehicle motion control.
ã»High durability of 3-year/60,000 km coverage has been achieved by reviewing internal components.
Â
Recommended range of N/mm (kgf/mm) when changing spring rate: *In case of rate increase, change the length to F=78(8)-170 / R=69(7)-220.
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