Whiteline Roll Center Adjuster & Bump Steer Kit — Fits 12+ Subaru BRZ / Scion FR-S

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SKU: WHLKCA435
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Sale price$250.99 Regular price$273.88
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Whiteline

Whiteline is the Australian leader in handling-focused suspension hardware — anti-sway bars, control arm bushings, alignment correction kits, and limited-slip differentials. Engineered for Subaru WRX/STI, Mitsubishi EVO, and modern performance platforms.

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Whiteline KCA435 Roll Center Adjuster & Bump Steer Kit

Essential for any lowered vehicle, the Whiteline KCA435 Roll Center Adjuster and Bump Steer Kit is designed to correct critical suspension geometry on your Subaru BRZ, Scion FR-S, or Toyota 86/GR86. This kit addresses the common issues that arise from lowering a vehicle, ensuring optimal tire contact and improved handling characteristics.

Key Features & Benefits:

  • Corrects Roll Center: Raises the front roll center, significantly increasing front roll resistance and reducing suspension compression on the outside front wheel during cornering.
  • Reduces Bump Steer: Minimizes unwanted steering angle changes during suspension travel, leading to more predictable handling.
  • Improves Tyre Contact: Promotes more even weight distribution across the tires for enhanced grip.
  • Enhances Cornering Speed: Allows for higher cornering speeds due to improved stability and grip.
  • Direct Steering Feel: Provides a more connected and responsive steering sensation.
  • Durable Components: Features specially engineered ball joints and tie rod ends for longevity.

When a vehicle is lowered, the factory suspension geometry is compromised, leading to increased body roll and less effective tire performance. The KCA435 kit utilizes precision-engineered components to restore and optimize this geometry. By correcting the roll center, it reduces the load transfer during cornering, keeping the tires flatter on the road surface. Furthermore, minimizing bump steer ensures that the vehicle tracks straight and true, even over uneven surfaces or during hard braking.

This kit is a must-have for enthusiasts seeking to maximize the performance and handling potential of their rear-wheel-drive sports car, especially after lowering it.

Fits: 2012+ Subaru BRZ, 2012+ Scion FR-S, 2017+ Toyota 86, 2022+ Toyota GR86.

Upgrade your suspension with Whiteline performance parts from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2013-2016 Scion FR-S Base
2013-2019 Subaru BRZ Premium
2013-2020 Subaru BRZ Limited
2015 Subaru BRZ Series.Blue
2016 Subaru BRZ Series.HyperBlue
2018 Subaru BRZ TS
2019 Subaru BRZ Series.Gray
2020 Subaru BRZ TS
2017 Toyota 86 Special Edition
2017-2020 Toyota 86 Base
2019 Toyota 86 TRD Special Edition
2020 Toyota 86 Hakone Edition

Product Details

Product Description
Part Numbers
Sizing & Fit

About Whiteline

Whiteline is the Australian leader in handling-focused suspension hardware — anti-sway bars, control arm bushings, alignment correction kits, and limited-slip differentials. Engineered for Subaru WRX/STI, Mitsubishi EVO, and modern performance platforms.

Watch in action

Whiteline KCA435 Roll Center Adjuster & Bump Steer Kit

Essential for any lowered vehicle, the Whiteline KCA435 Roll Center Adjuster and Bump Steer Kit is designed to correct critical suspension geometry on your Subaru BRZ, Scion FR-S, or Toyota 86/GR86. This kit addresses the common issues that arise from lowering a vehicle, ensuring optimal tire contact and improved handling characteristics.

Key Features & Benefits:

  • Corrects Roll Center: Raises the front roll center, significantly increasing front roll resistance and reducing suspension compression on the outside front wheel during cornering.
  • Reduces Bump Steer: Minimizes unwanted steering angle changes during suspension travel, leading to more predictable handling.
  • Improves Tyre Contact: Promotes more even weight distribution across the tires for enhanced grip.
  • Enhances Cornering Speed: Allows for higher cornering speeds due to improved stability and grip.
  • Direct Steering Feel: Provides a more connected and responsive steering sensation.
  • Durable Components: Features specially engineered ball joints and tie rod ends for longevity.

When a vehicle is lowered, the factory suspension geometry is compromised, leading to increased body roll and less effective tire performance. The KCA435 kit utilizes precision-engineered components to restore and optimize this geometry. By correcting the roll center, it reduces the load transfer during cornering, keeping the tires flatter on the road surface. Furthermore, minimizing bump steer ensures that the vehicle tracks straight and true, even over uneven surfaces or during hard braking.

This kit is a must-have for enthusiasts seeking to maximize the performance and handling potential of their rear-wheel-drive sports car, especially after lowering it.

Fits: 2012+ Subaru BRZ, 2012+ Scion FR-S, 2017+ Toyota 86, 2022+ Toyota GR86.

Upgrade your suspension with Whiteline performance parts from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2013-2016 Scion FR-S Base
2013-2019 Subaru BRZ Premium
2013-2020 Subaru BRZ Limited
2015 Subaru BRZ Series.Blue
2016 Subaru BRZ Series.HyperBlue
2018 Subaru BRZ TS
2019 Subaru BRZ Series.Gray
2020 Subaru BRZ TS
2017 Toyota 86 Special Edition
2017-2020 Toyota 86 Base
2019 Toyota 86 TRD Special Edition
2020 Toyota 86 Hakone Edition

Product Details

Product Description

About Whiteline

Whiteline is the Australian leader in handling-focused suspension hardware — anti-sway bars, control arm bushings, alignment correction kits, and limited-slip differentials. Engineered for Subaru WRX/STI, Mitsubishi EVO, and modern performance platforms.

Watch in action

Whiteline KCA435 Roll Center Adjuster & Bump Steer Kit

Essential for any lowered vehicle, the Whiteline KCA435 Roll Center Adjuster and Bump Steer Kit is designed to correct critical suspension geometry on your Subaru BRZ, Scion FR-S, or Toyota 86/GR86. This kit addresses the common issues that arise from lowering a vehicle, ensuring optimal tire contact and improved handling characteristics.

Key Features & Benefits:

  • Corrects Roll Center: Raises the front roll center, significantly increasing front roll resistance and reducing suspension compression on the outside front wheel during cornering.
  • Reduces Bump Steer: Minimizes unwanted steering angle changes during suspension travel, leading to more predictable handling.
  • Improves Tyre Contact: Promotes more even weight distribution across the tires for enhanced grip.
  • Enhances Cornering Speed: Allows for higher cornering speeds due to improved stability and grip.
  • Direct Steering Feel: Provides a more connected and responsive steering sensation.
  • Durable Components: Features specially engineered ball joints and tie rod ends for longevity.

When a vehicle is lowered, the factory suspension geometry is compromised, leading to increased body roll and less effective tire performance. The KCA435 kit utilizes precision-engineered components to restore and optimize this geometry. By correcting the roll center, it reduces the load transfer during cornering, keeping the tires flatter on the road surface. Furthermore, minimizing bump steer ensures that the vehicle tracks straight and true, even over uneven surfaces or during hard braking.

This kit is a must-have for enthusiasts seeking to maximize the performance and handling potential of their rear-wheel-drive sports car, especially after lowering it.

Fits: 2012+ Subaru BRZ, 2012+ Scion FR-S, 2017+ Toyota 86, 2022+ Toyota GR86.

Upgrade your suspension with Whiteline performance parts from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2013-2016 Scion FR-S Base
2013-2019 Subaru BRZ Premium
2013-2020 Subaru BRZ Limited
2015 Subaru BRZ Series.Blue
2016 Subaru BRZ Series.HyperBlue
2018 Subaru BRZ TS
2019 Subaru BRZ Series.Gray
2020 Subaru BRZ TS
2017 Toyota 86 Special Edition
2017-2020 Toyota 86 Base
2019 Toyota 86 TRD Special Edition
2020 Toyota 86 Hakone Edition

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