Whiteline Rear Positive Traction Kit - Rear Diff Mount Inserts — Fits 08-11 Subaru Impreza WRX/STI

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SKU: WHLKDT902
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About Whiteline Whiteline is the Australian leader in handling-focused suspension ...Read More

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Sale price$58.99 Regular price$65.88
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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 Rear Differential Mount Inserts for Subaru WRX & STi

Enhance the traction and handling of your Subaru WRX and STi (2008-2011 models) with the Whiteline Rear Differential Mount Inserts. This kit is specifically designed to work within the factory differential bushing, effectively eliminating 'lost motion' and reducing excessive movement of the rear crossmember. By minimizing this misalignment and movement, the kit ensures more consistent power delivery to the wheels, significantly reducing wheel hop during acceleration and improving overall stability during cornering.

Key Benefits:

  • Reduced Wheel Hop: Dramatically decreases wheel hop under hard acceleration.
  • Improved Traction: Ensures more consistent and effective power transfer to the rear wheels.
  • Enhanced Stability: Provides a more planted feel during cornering and braking.
  • Positive Drivetrain Feel: Delivers a more direct connection between the engine and wheels.
  • Simple Installation: Designed as inserts for the OEM bushing, making installation easier for DIYers.

This Whiteline kit is an excellent upgrade for Subaru owners who demand more from their drivetrain, especially those participating in track days, autocross, or simply seeking a more engaging driving experience. The reduction in differential movement leads to a more predictable and controllable rear end, allowing you to confidently apply power out of corners. Installation is straightforward, requiring no complex procedures, making it an accessible performance enhancement.

Maximize your Subaru's potential with Whiteline performance components from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008 Subaru Forester Sports 2.5 X
2008 Subaru Forester Sports 2.5 XT
2008 Subaru Forester X L.L. Bean Edition
2008-2010 Subaru Forester XT Limited
2008-2011 Subaru Forester X
2009-2011 Subaru Forester X Limited
2009-2011 Subaru Forester X Premium
2010-2011 Subaru Forester XT Premium
2011 Subaru Forester XT Touring
2011 Subaru Forester X Touring
2008-2011 Subaru Impreza 2.5i
2008-2011 Subaru Impreza Outback Sport
2008-2014 Subaru Impreza WRX STI
2009-2010 Subaru Impreza 2.5 GT
2009-2014 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2011 Subaru Impreza 2.5i Premium
2010-2014 Subaru Impreza WRX Limited
2011-2014 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

Whiteline Rear Differential Mount Inserts for Subaru WRX & STi

Enhance the traction and handling of your Subaru WRX and STi (2008-2011 models) with the Whiteline Rear Differential Mount Inserts. This kit is specifically designed to work within the factory differential bushing, effectively eliminating 'lost motion' and reducing excessive movement of the rear crossmember. By minimizing this misalignment and movement, the kit ensures more consistent power delivery to the wheels, significantly reducing wheel hop during acceleration and improving overall stability during cornering.

Key Benefits:

  • Reduced Wheel Hop: Dramatically decreases wheel hop under hard acceleration.
  • Improved Traction: Ensures more consistent and effective power transfer to the rear wheels.
  • Enhanced Stability: Provides a more planted feel during cornering and braking.
  • Positive Drivetrain Feel: Delivers a more direct connection between the engine and wheels.
  • Simple Installation: Designed as inserts for the OEM bushing, making installation easier for DIYers.

This Whiteline kit is an excellent upgrade for Subaru owners who demand more from their drivetrain, especially those participating in track days, autocross, or simply seeking a more engaging driving experience. The reduction in differential movement leads to a more predictable and controllable rear end, allowing you to confidently apply power out of corners. Installation is straightforward, requiring no complex procedures, making it an accessible performance enhancement.

Maximize your Subaru's potential with Whiteline performance components from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008 Subaru Forester Sports 2.5 X
2008 Subaru Forester Sports 2.5 XT
2008 Subaru Forester X L.L. Bean Edition
2008-2010 Subaru Forester XT Limited
2008-2011 Subaru Forester X
2009-2011 Subaru Forester X Limited
2009-2011 Subaru Forester X Premium
2010-2011 Subaru Forester XT Premium
2011 Subaru Forester XT Touring
2011 Subaru Forester X Touring
2008-2011 Subaru Impreza 2.5i
2008-2011 Subaru Impreza Outback Sport
2008-2014 Subaru Impreza WRX STI
2009-2010 Subaru Impreza 2.5 GT
2009-2014 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2011 Subaru Impreza 2.5i Premium
2010-2014 Subaru Impreza WRX Limited
2011-2014 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

Whiteline Rear Differential Mount Inserts for Subaru WRX & STi

Enhance the traction and handling of your Subaru WRX and STi (2008-2011 models) with the Whiteline Rear Differential Mount Inserts. This kit is specifically designed to work within the factory differential bushing, effectively eliminating 'lost motion' and reducing excessive movement of the rear crossmember. By minimizing this misalignment and movement, the kit ensures more consistent power delivery to the wheels, significantly reducing wheel hop during acceleration and improving overall stability during cornering.

Key Benefits:

  • Reduced Wheel Hop: Dramatically decreases wheel hop under hard acceleration.
  • Improved Traction: Ensures more consistent and effective power transfer to the rear wheels.
  • Enhanced Stability: Provides a more planted feel during cornering and braking.
  • Positive Drivetrain Feel: Delivers a more direct connection between the engine and wheels.
  • Simple Installation: Designed as inserts for the OEM bushing, making installation easier for DIYers.

This Whiteline kit is an excellent upgrade for Subaru owners who demand more from their drivetrain, especially those participating in track days, autocross, or simply seeking a more engaging driving experience. The reduction in differential movement leads to a more predictable and controllable rear end, allowing you to confidently apply power out of corners. Installation is straightforward, requiring no complex procedures, making it an accessible performance enhancement.

Maximize your Subaru's potential with Whiteline performance components from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008 Subaru Forester Sports 2.5 X
2008 Subaru Forester Sports 2.5 XT
2008 Subaru Forester X L.L. Bean Edition
2008-2010 Subaru Forester XT Limited
2008-2011 Subaru Forester X
2009-2011 Subaru Forester X Limited
2009-2011 Subaru Forester X Premium
2010-2011 Subaru Forester XT Premium
2011 Subaru Forester XT Touring
2011 Subaru Forester X Touring
2008-2011 Subaru Impreza 2.5i
2008-2011 Subaru Impreza Outback Sport
2008-2014 Subaru Impreza WRX STI
2009-2010 Subaru Impreza 2.5 GT
2009-2014 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2011 Subaru Impreza 2.5i Premium
2010-2014 Subaru Impreza WRX Limited
2011-2014 Subaru Impreza WRX STI Limited

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