HKS Hipermax S Coilovers (Pillow Ball) - Nissan Silvia S14 & S15
The pillow ball version of Hipermax S, using a spherical bearing front upper mount in place of the standard rubber item. The result is a more direct connection to the road and a firmer, more rigid steering feel, giving the car a sharper, more sporting character.
Hipermax S itself is built around driving comfort in the broadest sense. The dual PVS preload valve system suppresses unnecessary damping force at higher piston speeds, improving ride comfort without diluting handling. A revised needle jet shape widens the range of damping adjustment across the 30 available steps, and low friction internals developed through advanced tribology raise durability while improving both ride quality and handling. Revised bump stop rubber completes the package.
Optimised internal parts and improved build quality carry a three year warranty.
Key Features
- Spherical bearing front upper mount, rubber rear
- 30 step damping adjustment
- Dual PVS preload valve system
- Inverted single tube front damper
- Wide range damping adjustment mechanism
- Low friction internal components
- Spring rate changes and overhaul service available
- Three year warranty
Specifications
| Front |
Rear |
| Spring rate |
59 N/mm (6.0 kgf/mm) |
49 N/mm (5.0 kgf/mm) |
| Spring length |
220mm (barrel) |
250mm (barrel) |
| Upper mount |
Spherical bearing |
Rubber |
| Height at factory setting |
-47mm (0 to -63mm) |
-45mm (-12 to -85mm) |
| Spring rate change at factory |
Unavailable |
Unavailable |
Test wheels: 8.0JJ ET30 front with 225/40R18, 9.0JJ ET38 rear with 255/35R18, both at 220kPa.
Please Note
- The spherical bearing is a consumable item. Replacement bearings are available separately
- The rubber upper mount version is available as 80300-AN002
