HKS Front and Rear Carbon Fiber Strut Tower Brace Kit 2022-2025 BRZ/GR86
Uses GRAPHITE DESIGN carbon shafts, a leader in golf carbon technology.
Replaces stock front steel bar and adds connecting bars for front and rear reinforcement.
Weave pattern matches other HKS carbon products, ensuring a unified and elegant engine bay appearance. Reduces harshness and absorbs vibrations, providing a smooth and refined driving experience.
Torsion
150% increased torsional strength compared to stock brace bars, effectively reducing body torsion and enabling precise suspension movement.
Enhanced damper response: Minimizes delays in suspension reaction, ensuring accurate and responsive handling.
Optimized cornering stability: Torque increases progressively with angle, providing the necessary load at the right time for stable cornering performance.
Bending
Improved flex characteristics: Utilizes carbon's unique flexibility to reduce bending load to 70% or less compared to stock brace bars.
Enhanced ride quality: Effectively absorbs unpleasant vibrations and sudden impacts, significantly contributing to a smoother and more refined driving experience.
Circuit testing to determine specifications
To determine the specifications, we conducted a circuit test at Fuji Speedway. After understanding the characteristics of the stock model, we tested various specifications on both the ZN8 and ZD8 to find the specifications that seemed best.
Stock Steel Bars:
Provide body rigidity with a firm feel but lack refinement. Vibrations are prominent, leading to lower quality. Handling feels abrupt, lacking smoothness and tire contact feedback.
Improvement goal:
Reduce excessive stiffness and enhance refinement.
Front Prototype (Stock Replacement):
Eliminates front rigidity, reducing vibrations and improving quality. Enhanced tire contact and smoother vehicle behavior. However, steering feel becomes softer, which may not appeal to everyone.
Front Prototype (Stock Replacement + Tower Bar):
Restores firm steering feel while maintaining reduced vibrations for improved comfort and performance. Enhanced overall refinement but introduces a slight rear imbalance due to stronger front rigidity.
Stock + Prototype Tower Bar:
Creates excessive rigidity, amplifying vibrations and road noise, sacrificing comfort. Handling improves but becomes overly rigid, leading to grip loss during sudden maneuvers at limits.
Front Prototype (Stock Replacement + Tower Bar) + Rear Prototype:
Achieves front-rear balance, improving rear tire contact and linear response. Significantly enhances rigidity, boosting control at limits while providing smoother inputs and a refined, premium driving experience.
Driving performance evaluation
Chart Overview: The right side indicates handling and performance, while the left represents ride comfort.
Carbon Brace Characteristics:
Improves responsiveness and stability, delivering a smooth, refined steering feel compared to the harsher vibration of stock components.
Carbon shafts significantly dampen road vibrations (e.g., harsh jolts or buzzing) for improved comfort.
Performance Advantage:
Utilizes the flexibility of carbon, balancing ride quality and driving dynamics at a high level, surpassing traditional metal braces.
Enhances direct handling feel while maintaining composure at the limits, making the vehicle easier to control.
Track Benefits:
Improves tire pressure distribution awareness, enhancing cornering precision.
