HKS Hipermax S Coilovers for 2011-2014 Subaru WRX STI (GRB/GRV)

The HKS Hipermax S Coilovers are new for 2021 and evolved from the three existing MAX IV GT series coilovers. Nine years have passed since the launch of HKS MAX IV GT, and during that time we have developed new technologies. It will be a new series that has all three conventional model's characteristics, and been evolved by damping force characteristics, durability, and beauty. The HKS HIPERMAX S series offers the best ride in HKS suspension history.

Features

• Inverted Monotube design for constant & stable suspension feedback
• 30-step 1-way Dampening Adjustable
• Ride height adjustable shock body length
• PNE coilover coating (better than anodizing) for corrosion protection
• Dual preload valve system
• Dust boots included for debris protection
• Aluminum bracket
• Special HKS formulated piston oil used
• Rubber upper mount
• Overhaul/rebuild available
• Made in Japan

Additional Product Features

Dual PVSWe evolved the existing preload valve system to the dual preload valve system to suppress the generation of unnecessary damping force during higher piston speeds.This provides major improvement in ride comfort without influencing the driving performance.

Wide range damping force adjustment mechanismThe improved shape of the Needle jet expand the range of damping force adjustment. This makes us possible to handle driving on a wider range of stages.

Evolution of Bump stop rubberA new shape of bump stop rubber reduces the body roll and achieves ride comfort at the same time which cannot be achieved with general hydro bump stop rubber.

Low friction technologyWith advanced tribology technology, we have achieved even higher durability and lower friction than conventional products. This technology contributes to improved ride quality and handling performance.

3-year warrantyCompared to the one-year warranty period of the conventional MAX IV GT series, the HKS HIPERMAX S Series has a three-year warranty due to optimized internal parts and quality improvement.