HKS Hipermax IV GT Coilovers Spec-A | 2015+ Subaru WRX & WRX STI

2015 Japan Rally Champion Toshi Arai teamed up with HKS for a special tuned set of Hipermax IV GT coilovers. The idea was to have a system built around the specifications and performance needs that a driver like Arai-san seeks in his street cars.

The HKS Hipermax IV GT coilover system was tuned and designed for street performance with race flexibility. HKS utilizes its experience from 35 years of circuit, GT, drift, and drag racing to bring you the cutting edge in suspension technology. Paired with rally genius Toshi Arai and you have the perfect set of coilovers for optimal performance on the street and in the track.

Applications:

• Subaru WRX [VAG] (2015, 2016, 2017, 2018, 2019, 2020, 2021)
• Subaru WRX STI [VAB] (2015, 2016, 2017, 2018, 2019, 2020, 2021)

Features

Hiper Linear Piston adjusts oil passages for precise stroke management resulting in smooth valve movements
2 Way Adjustable Front and Rear Pillowball Mount
Monotube inverted piston design (where possible)
Full shock-body length adjustable
65mm diameter springs – Cold wound and manufactured in-house at HKS to ensure quality and consistency
Stainless lock nut & ride height adjuster – feature anti-rust & corrosion characteristics for enhanced durability
30-way adjustable dampening
Hard chrome-plated cylinder shaft
Non-electrolysis Nickel plated shock bodies provide durability in severe weather conditions
Tuned for street and track performance by Toshi Arai

Extended Information

Damping Force (Front): 1000m/sec (Rebound) & 490m/sec (Compression)
Damping Force (Rear): 370m/sec (Rebound) & 350m/sec (Compression)
Front Upper Mount: Steel Pillowball + Camber
Lowering (Front): -19mm (From 0 to -30mm)
Lowering (Rear): -20mm (From -0 to -31mm)
Rear Upper Mount: Aluminum Pillowball
Spring Length (Front): 250mm (Barrel)
Spring Length (Rear): 220mm
Spring Rate (Front): 49+19 N/mm (5+2 kgf/mm)
Spring Rate (Rear): 39+19 N/mm (4+2 kgf/mm)