Whiteline Rear Differential Support — Fits 02-07 Subaru WRX/STI & 93-00 Impreza

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SKU: WHLKSB751
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About Whiteline Whiteline is the Australian leader in handling-focused suspension ...Read More

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Sale price$52.99 Regular price$58.88
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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

Sharpen Your Subaru's Rear-End Response with Whiteline's Differential Support

For Subaru enthusiasts pushing their vehicles to the limit, controlling the rear differential's movement is crucial for optimal performance. Whiteline's Rear Differential Support (KSB751) is engineered to significantly reduce rear-end float, particularly under acceleration, and eliminate drivetrain "slap" during aggressive gear changes. This translates to more direct power delivery and a more connected driving feel.

Engineered for Performance and Precision:

The KSB751 brace directly addresses the flex and movement that can occur at the front of the rear differential. By providing a more rigid mounting point, it ensures that power is transferred more efficiently to the wheels. This enhanced stability results in sharper handling, improved chassis response, and greater confidence when navigating corners or exiting them under power. It's a vital upgrade for high-horsepower applications and competitive driving scenarios like drag racing and circuit track days.

Important Considerations:

As with many performance-oriented upgrades that increase chassis rigidity, the KSB751 is known to introduce additional Noise, Vibration, and Harshness (NVH) into the cabin. This is a trade-off for the enhanced performance and control it provides. This component is highly recommended for dedicated performance driving and motorsport use.

Key Features & Benefits:

  • Reduced Rear-End Float: Minimizes unwanted movement under acceleration.
  • Eliminates Drivetrain Slap: Improves shifting feel and power delivery.
  • Enhanced Handling: Delivers more precise and responsive cornering.
  • Improved Chassis Response: Creates a more direct connection between the driver and the road.
  • Ideal for High Power: Crucial for managing power in modified Subarus.

Vehicle Fitment:

This Whiteline Rear Differential Support is designed to fit a variety of Subaru and Saab models, including:

  • Subaru Impreza: 1993-2001 (Base, L, LS, LX, Outback), 2002-2004 (TS), 2004-2007 (WRX, WRX STI)
  • Subaru Forester: 1998-2002 (Base, L, S), 2003-2008 (various trims including XT)
  • Saab 9-2X: 2005-2006 (Aero, Linear, 2.5i)

Elevate your Subaru's performance capabilities with the Whiteline KSB751, available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005 Saab 9-2X Linear
2005-2006 Saab 9-2X Aero
2006 Saab 9-2X 2.5i
1998-2002 Subaru Forester Base
1998-2002 Subaru Forester L
1998-2002 Subaru Forester S
2003-2005 Subaru Forester XS
2004-2005 Subaru Forester XT
2005 Subaru Forester XS L.L. Bean Edition
2005 Subaru Forester XT Premium
2006-2008 Subaru Forester X L.L. Bean Edition
2006-2008 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 X
2008 Subaru Forester Sports 2.5 XT
1993-1994 Subaru Impreza LS
1993-2001 Subaru Impreza L
1995-1996 Subaru Impreza LX
1995-2004 Subaru Impreza Outback
1996-1997 Subaru Impreza Brighton
1998-2005 Subaru Impreza RS
2002-2004 Subaru Impreza TS
2004-2007 Subaru Impreza WRX STI
2005-2007 Subaru Impreza Outback Sport
2006-2007 Subaru Impreza WRX Limited
2006-2007 Subaru Impreza WRX TR
2006-2007 Subaru Impreza 2.5i
2007 Subaru Impreza WRX STI Limited

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

Sharpen Your Subaru's Rear-End Response with Whiteline's Differential Support

For Subaru enthusiasts pushing their vehicles to the limit, controlling the rear differential's movement is crucial for optimal performance. Whiteline's Rear Differential Support (KSB751) is engineered to significantly reduce rear-end float, particularly under acceleration, and eliminate drivetrain "slap" during aggressive gear changes. This translates to more direct power delivery and a more connected driving feel.

Engineered for Performance and Precision:

The KSB751 brace directly addresses the flex and movement that can occur at the front of the rear differential. By providing a more rigid mounting point, it ensures that power is transferred more efficiently to the wheels. This enhanced stability results in sharper handling, improved chassis response, and greater confidence when navigating corners or exiting them under power. It's a vital upgrade for high-horsepower applications and competitive driving scenarios like drag racing and circuit track days.

Important Considerations:

As with many performance-oriented upgrades that increase chassis rigidity, the KSB751 is known to introduce additional Noise, Vibration, and Harshness (NVH) into the cabin. This is a trade-off for the enhanced performance and control it provides. This component is highly recommended for dedicated performance driving and motorsport use.

Key Features & Benefits:

  • Reduced Rear-End Float: Minimizes unwanted movement under acceleration.
  • Eliminates Drivetrain Slap: Improves shifting feel and power delivery.
  • Enhanced Handling: Delivers more precise and responsive cornering.
  • Improved Chassis Response: Creates a more direct connection between the driver and the road.
  • Ideal for High Power: Crucial for managing power in modified Subarus.

Vehicle Fitment:

This Whiteline Rear Differential Support is designed to fit a variety of Subaru and Saab models, including:

  • Subaru Impreza: 1993-2001 (Base, L, LS, LX, Outback), 2002-2004 (TS), 2004-2007 (WRX, WRX STI)
  • Subaru Forester: 1998-2002 (Base, L, S), 2003-2008 (various trims including XT)
  • Saab 9-2X: 2005-2006 (Aero, Linear, 2.5i)

Elevate your Subaru's performance capabilities with the Whiteline KSB751, available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005 Saab 9-2X Linear
2005-2006 Saab 9-2X Aero
2006 Saab 9-2X 2.5i
1998-2002 Subaru Forester Base
1998-2002 Subaru Forester L
1998-2002 Subaru Forester S
2003-2005 Subaru Forester XS
2004-2005 Subaru Forester XT
2005 Subaru Forester XS L.L. Bean Edition
2005 Subaru Forester XT Premium
2006-2008 Subaru Forester X L.L. Bean Edition
2006-2008 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 X
2008 Subaru Forester Sports 2.5 XT
1993-1994 Subaru Impreza LS
1993-2001 Subaru Impreza L
1995-1996 Subaru Impreza LX
1995-2004 Subaru Impreza Outback
1996-1997 Subaru Impreza Brighton
1998-2005 Subaru Impreza RS
2002-2004 Subaru Impreza TS
2004-2007 Subaru Impreza WRX STI
2005-2007 Subaru Impreza Outback Sport
2006-2007 Subaru Impreza WRX Limited
2006-2007 Subaru Impreza WRX TR
2006-2007 Subaru Impreza 2.5i
2007 Subaru Impreza WRX STI Limited

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

Sharpen Your Subaru's Rear-End Response with Whiteline's Differential Support

For Subaru enthusiasts pushing their vehicles to the limit, controlling the rear differential's movement is crucial for optimal performance. Whiteline's Rear Differential Support (KSB751) is engineered to significantly reduce rear-end float, particularly under acceleration, and eliminate drivetrain "slap" during aggressive gear changes. This translates to more direct power delivery and a more connected driving feel.

Engineered for Performance and Precision:

The KSB751 brace directly addresses the flex and movement that can occur at the front of the rear differential. By providing a more rigid mounting point, it ensures that power is transferred more efficiently to the wheels. This enhanced stability results in sharper handling, improved chassis response, and greater confidence when navigating corners or exiting them under power. It's a vital upgrade for high-horsepower applications and competitive driving scenarios like drag racing and circuit track days.

Important Considerations:

As with many performance-oriented upgrades that increase chassis rigidity, the KSB751 is known to introduce additional Noise, Vibration, and Harshness (NVH) into the cabin. This is a trade-off for the enhanced performance and control it provides. This component is highly recommended for dedicated performance driving and motorsport use.

Key Features & Benefits:

  • Reduced Rear-End Float: Minimizes unwanted movement under acceleration.
  • Eliminates Drivetrain Slap: Improves shifting feel and power delivery.
  • Enhanced Handling: Delivers more precise and responsive cornering.
  • Improved Chassis Response: Creates a more direct connection between the driver and the road.
  • Ideal for High Power: Crucial for managing power in modified Subarus.

Vehicle Fitment:

This Whiteline Rear Differential Support is designed to fit a variety of Subaru and Saab models, including:

  • Subaru Impreza: 1993-2001 (Base, L, LS, LX, Outback), 2002-2004 (TS), 2004-2007 (WRX, WRX STI)
  • Subaru Forester: 1998-2002 (Base, L, S), 2003-2008 (various trims including XT)
  • Saab 9-2X: 2005-2006 (Aero, Linear, 2.5i)

Elevate your Subaru's performance capabilities with the Whiteline KSB751, available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005 Saab 9-2X Linear
2005-2006 Saab 9-2X Aero
2006 Saab 9-2X 2.5i
1998-2002 Subaru Forester Base
1998-2002 Subaru Forester L
1998-2002 Subaru Forester S
2003-2005 Subaru Forester XS
2004-2005 Subaru Forester XT
2005 Subaru Forester XS L.L. Bean Edition
2005 Subaru Forester XT Premium
2006-2008 Subaru Forester X L.L. Bean Edition
2006-2008 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 X
2008 Subaru Forester Sports 2.5 XT
1993-1994 Subaru Impreza LS
1993-2001 Subaru Impreza L
1995-1996 Subaru Impreza LX
1995-2004 Subaru Impreza Outback
1996-1997 Subaru Impreza Brighton
1998-2005 Subaru Impreza RS
2002-2004 Subaru Impreza TS
2004-2007 Subaru Impreza WRX STI
2005-2007 Subaru Impreza Outback Sport
2006-2007 Subaru Impreza WRX Limited
2006-2007 Subaru Impreza WRX TR
2006-2007 Subaru Impreza 2.5i
2007 Subaru Impreza WRX STI Limited

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