Whiteline Front Race Anti-Dive Caster Kit — Fits 2011+ Subaru STi

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SKU: WHLKCA425M
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About Whiteline Whiteline is the Australian leader in handling-focused suspension ...Read More

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Sale price$340.99 Regular price$371.88
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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.

Watch in action

Whiteline KCA425M Front Race Anti-Dive Caster Kit

Elevate your Subaru STi's performance with the Whiteline KCA425M Front Race Anti-Dive Caster Kit, engineered exclusively for motorsport applications. This kit replaces the rear vertical bushing on the front control arm, featuring a lightweight aluminum housing and high-performance, low-compliance bearings. These components ensure optimal dynamic alignment under the extreme demands of racing.

Key Features & Benefits:

  • Motorsport Optimized: Designed for the rigors of track use and competition.
  • Enhanced Alignment Control: Provides precise adjustments for anti-dive and anti-lift characteristics.
  • Adjustable Geometry: Allows tuning of handling behavior to suit various track conditions and driving styles through included spacers.
  • Improved Steering Response: Delivers sharper turn-in and more predictable handling.
  • Durable Construction: Lightweight aluminum housing and high-performance bearings ensure longevity.
  • Stealth Black Finish: All motorsport kits come with a discreet 'Stealth Black' aesthetic.

The KCA425M kit offers a unique advantage by allowing STI owners to fine-tune their vehicle's geometry. By adjusting the anti-dive and anti-lift settings, you can achieve a handling balance that perfectly matches your specific setup and preferences. This translates to improved traction, reduced understeer, and greater confidence when pushing your vehicle to its limits.

Experience the Whiteline difference and unlock your Subaru STi's true potential on the track with the KCA425M kit.

Fits: 2011+ Subaru STi (Excludes WRX)

Upgrade your suspension with Whiteline performance parts from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008-2014 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2010 Subaru Impreza 2.5 GT
2010-2011 Subaru Impreza WRX Premium
2010-2011 Subaru Impreza 2.5i
2010-2011 Subaru Impreza 2.5i Premium
2010-2011 Subaru Impreza Outback Sport
2010-2012 Subaru Impreza WRX
2010-2012 Subaru Impreza WRX Limited
2011-2014 Subaru Impreza WRX STI Limited
2012 Subaru Impreza Base
2012 Subaru Impreza Limited
2012 Subaru Impreza Premium
2012 Subaru Impreza Sport Limited
2015-2019 Subaru Legacy 2.5i Limited
2015-2019 Subaru Legacy 2.5i Premium
2015-2019 Subaru Legacy 3.6R Limited
2017-2019 Subaru Legacy 2.5i Sport
2015-2019 Subaru Outback 2.5i
2015-2019 Subaru Outback 2.5i Limited
2015-2019 Subaru Outback 3.6R Limited
2017-2019 Subaru Outback 2.5i Touring
2017-2019 Subaru Outback 3.6R Touring
2015-2024 Subaru WRX Base
2015-2024 Subaru WRX Limited
2015-2024 Subaru WRX Premium
2022-2024 Subaru WRX GT
2015 Subaru WRX STI Launch Edition
2015-2021 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2018 Subaru WRX STI Type RA

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 KCA425M Front Race Anti-Dive Caster Kit

Elevate your Subaru STi's performance with the Whiteline KCA425M Front Race Anti-Dive Caster Kit, engineered exclusively for motorsport applications. This kit replaces the rear vertical bushing on the front control arm, featuring a lightweight aluminum housing and high-performance, low-compliance bearings. These components ensure optimal dynamic alignment under the extreme demands of racing.

Key Features & Benefits:

  • Motorsport Optimized: Designed for the rigors of track use and competition.
  • Enhanced Alignment Control: Provides precise adjustments for anti-dive and anti-lift characteristics.
  • Adjustable Geometry: Allows tuning of handling behavior to suit various track conditions and driving styles through included spacers.
  • Improved Steering Response: Delivers sharper turn-in and more predictable handling.
  • Durable Construction: Lightweight aluminum housing and high-performance bearings ensure longevity.
  • Stealth Black Finish: All motorsport kits come with a discreet 'Stealth Black' aesthetic.

The KCA425M kit offers a unique advantage by allowing STI owners to fine-tune their vehicle's geometry. By adjusting the anti-dive and anti-lift settings, you can achieve a handling balance that perfectly matches your specific setup and preferences. This translates to improved traction, reduced understeer, and greater confidence when pushing your vehicle to its limits.

Experience the Whiteline difference and unlock your Subaru STi's true potential on the track with the KCA425M kit.

Fits: 2011+ Subaru STi (Excludes WRX)

Upgrade your suspension with Whiteline performance parts from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008-2014 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2010 Subaru Impreza 2.5 GT
2010-2011 Subaru Impreza WRX Premium
2010-2011 Subaru Impreza 2.5i
2010-2011 Subaru Impreza 2.5i Premium
2010-2011 Subaru Impreza Outback Sport
2010-2012 Subaru Impreza WRX
2010-2012 Subaru Impreza WRX Limited
2011-2014 Subaru Impreza WRX STI Limited
2012 Subaru Impreza Base
2012 Subaru Impreza Limited
2012 Subaru Impreza Premium
2012 Subaru Impreza Sport Limited
2015-2019 Subaru Legacy 2.5i Limited
2015-2019 Subaru Legacy 2.5i Premium
2015-2019 Subaru Legacy 3.6R Limited
2017-2019 Subaru Legacy 2.5i Sport
2015-2019 Subaru Outback 2.5i
2015-2019 Subaru Outback 2.5i Limited
2015-2019 Subaru Outback 3.6R Limited
2017-2019 Subaru Outback 2.5i Touring
2017-2019 Subaru Outback 3.6R Touring
2015-2024 Subaru WRX Base
2015-2024 Subaru WRX Limited
2015-2024 Subaru WRX Premium
2022-2024 Subaru WRX GT
2015 Subaru WRX STI Launch Edition
2015-2021 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2018 Subaru WRX STI Type RA

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 KCA425M Front Race Anti-Dive Caster Kit

Elevate your Subaru STi's performance with the Whiteline KCA425M Front Race Anti-Dive Caster Kit, engineered exclusively for motorsport applications. This kit replaces the rear vertical bushing on the front control arm, featuring a lightweight aluminum housing and high-performance, low-compliance bearings. These components ensure optimal dynamic alignment under the extreme demands of racing.

Key Features & Benefits:

  • Motorsport Optimized: Designed for the rigors of track use and competition.
  • Enhanced Alignment Control: Provides precise adjustments for anti-dive and anti-lift characteristics.
  • Adjustable Geometry: Allows tuning of handling behavior to suit various track conditions and driving styles through included spacers.
  • Improved Steering Response: Delivers sharper turn-in and more predictable handling.
  • Durable Construction: Lightweight aluminum housing and high-performance bearings ensure longevity.
  • Stealth Black Finish: All motorsport kits come with a discreet 'Stealth Black' aesthetic.

The KCA425M kit offers a unique advantage by allowing STI owners to fine-tune their vehicle's geometry. By adjusting the anti-dive and anti-lift settings, you can achieve a handling balance that perfectly matches your specific setup and preferences. This translates to improved traction, reduced understeer, and greater confidence when pushing your vehicle to its limits.

Experience the Whiteline difference and unlock your Subaru STi's true potential on the track with the KCA425M kit.

Fits: 2011+ Subaru STi (Excludes WRX)

Upgrade your suspension with Whiteline performance parts from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008-2014 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2010 Subaru Impreza 2.5 GT
2010-2011 Subaru Impreza WRX Premium
2010-2011 Subaru Impreza 2.5i
2010-2011 Subaru Impreza 2.5i Premium
2010-2011 Subaru Impreza Outback Sport
2010-2012 Subaru Impreza WRX
2010-2012 Subaru Impreza WRX Limited
2011-2014 Subaru Impreza WRX STI Limited
2012 Subaru Impreza Base
2012 Subaru Impreza Limited
2012 Subaru Impreza Premium
2012 Subaru Impreza Sport Limited
2015-2019 Subaru Legacy 2.5i Limited
2015-2019 Subaru Legacy 2.5i Premium
2015-2019 Subaru Legacy 3.6R Limited
2017-2019 Subaru Legacy 2.5i Sport
2015-2019 Subaru Outback 2.5i
2015-2019 Subaru Outback 2.5i Limited
2015-2019 Subaru Outback 3.6R Limited
2017-2019 Subaru Outback 2.5i Touring
2017-2019 Subaru Outback 3.6R Touring
2015-2024 Subaru WRX Base
2015-2024 Subaru WRX Limited
2015-2024 Subaru WRX Premium
2022-2024 Subaru WRX GT
2015 Subaru WRX STI Launch Edition
2015-2021 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2018 Subaru WRX STI Type RA

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