The sport model to have a comfortable drive even in the winding road.
This “MAX IV SP” is the ultimate sport model for such a high grip radial tire. It will transfer the feelings straight to driver all kinds of information such as tire, road surface condition and traction. It’s a perfect street sport model suspension for people who love to drive fast but still want comfort.
Single Tube Damper Design
Mono tube dampers allow for more accurate and stable control and adjustment of dampening. Lower ride height and center of gravity gives a more stable ride.
Dust Boot
Protect the shaft from the flying stones.
PNE Coating
Using this special surface coating provides 5 times better durability over standard galvanising. This prevents build-up around the threads of the adjustment areas allowing for easier height adjustment.
M Shaft (Φ46 normal type)
With the new design of cylinder shaft since the HIPERMAX M-1, MAX IV increased the cylinder shaft size to have a firm damping even at a little stroke range by optimizing the oil pressure characteristic. We mainly adopted this to the rear damper that can have a better driving experience.
Adopted Pillow Ball Upper Mount
For more accurate and sharp steering.
New Design Needle
Newly designed needle has been used to revise the very low speed and middle and high speed dampening which is key to a comfort ride.
Reduction of Unsprung Weight
In order to reduce unsprung weight, bracket, ride height adjusters and lock nuts are made from aluminium. (Not for all vehicles)
30 Step Damping Force Adjustment
30 levels of dampening adjustment allow fine tune adjustment for street, circuit winding roads, highway, or the weight of the vehicle.
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| Ride Height | mm | ||||||||||||||||||||||||||||
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| *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. |
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| Spring of Full Kit | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Specification of damper | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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| * The value of the damping force is at piston speed of 0.1m/sec. | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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| * Refer to the above explanation *3 of ride height information for drivable high and low limitations. | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Test vehicle information | |||||||||||||||||||||||
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| Point |
| We have developed a sport damper of MAX IV SP for Z33 from the scratch. Plan 1. Changeable rear rate. Plan 2. Easy damping force adjustment To have rear stability for turn-in, we setφ65 series-wound spring with helper and enough bump stroke. Also we set the rear damping force adjustment dial inside the car for fast and easy setting, so that you don’t have to get your hands dirty (need interior works). We set it smooth but firm for the comfortable drive. It’s tight but not uncomfortable and there isn’t bad up and down movement. It also recovers fast. Preferred dial setting 0-10: Circuit or high speed drive, 11 -20: Winding roads or highway, 21 – 30: Normal drive We recommend spring rate of 14k for rear if you don’t go to circuit. Set F16k/R18k for circuit drive. (Settings are for high-grip radial tires) * Test tire (front & rear): 265/35-18 ●Modification for installation ・Need a hole to put through the rear damping force adjustment cable. |
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