HKS Hipermax IV GT Coilovers – 240SX S14


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The HKS HiperMAX GT coilover was designed for the enthusiast that wants to upgrade the handling of their car while being able to lower it for style while not losing out to much on daily driving comfort. The Hipermax GT features a 6kg front 5kg rear spring rate. The has an adjustable front pillow ball mount up front to allow for camber adjustment while the rear features a hardened rubber upper mount to help keep road noise and other sounds that come with lower quality coilover systems. The GT even though it has a focus on comfort will still perform on the track. Not recommend for cars that will be tracked for competition use as there are better options when building a dedicated track car.

HiperMAX IV the new damper from HKS returns to the core of tuning, the street. Featuring an advanced shock absorption system, the MAX IV captures the bumps on the road to give a supple yet stable ride. MAX IV aims for a high level balance of comfort with sporty handling.

It’s perfect for daily street drive with style and performance. You and your passenger can have a comfortable ride even with a low-down.

Single Tube Damper Design
Mono tube dampers allow for more accurate and stable control and adjustment of dampening. Lower ride height and centre 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
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 because of the optimized oil pressure characteristic. We mainly adopted this to the rear damper that can have a better driving experience.

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 or circuit.

  •  Lowering (Front): -47mm (From 0 to -81mm)
  • Spring Length (Rear): 250mm
  • Lowering (Front): -47mm (From 0 to -81mm)
  • Spring Length (Rear): 250mm
  • Damping Force (Rear): 839m/sec (Rebound) & 382m/sec (Compression)
  • Spring Length (Front): 220mm(Barrel)
  • Damping Force (Front): 211m/sec (Rebound) & 137m/sec (Compression)
  • Front Upper Mount: Rubber
  • Spring Rate (Front): 59N/mm (6kgf/mm)
  • Lowering (Rear): -45mm (From 0 to -80mm)
  • Rear Upper Mount: Rubber
  • Spring Rate (Rear): 49N/mm (5kgf/mm)

Additional information

Weight 50 lbs
Dimensions 32 × 18 × 16 in
Vehicle Make


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Vehicle Application

Make Model Year
Nissan 240SX 1998
Nissan 240SX 1996
Nissan 240SX 1997
Nissan 240SX 1995

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