Whiteline Rear Subframe Lock Kit — Fits 02-07 Subaru WRX/STI & 93-00 Impreza

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SKU: WHLKSB750
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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

Maximize Rear-End Precision with Whiteline's Rear Subframe Lock Kit

For Subaru enthusiasts seeking ultimate control and responsiveness from their vehicle's rear suspension, Whiteline's Rear Subframe Lock Kit (KSB750) is an essential upgrade. This kit is engineered to eliminate unwanted rear subframe movement, a common issue that can compromise alignment and handling, especially under spirited driving conditions.

Unlock Superior Alignment and Handling

The KSB750 kit works by effectively locking the rear subframe, preventing flex and deflection during cornering and acceleration. This precise control ensures that your rear wheels maintain their intended alignment settings dynamically, leading to improved grip, sharper turn-in, and a more predictable driving experience. By minimizing subframe movement, you'll notice a significant reduction in rear-end float and a more connected feel to the road.

Motorsport-Focused Design:

It's important to note that this kit is designed with motorsport applications in mind. The increased rigidity means it will introduce additional Noise, Vibration, and Harshness (NVH) into the cabin. For this reason, it's recommended for track use, autocross, or for drivers who prioritize performance over ultimate comfort. The hardware is designed for straightforward installation and removal, allowing for easy transitions between track days and street driving.

Key Features & Benefits:

  • Precise Alignment: Locks the rear subframe for consistent wheel alignment.
  • Enhanced Handling: Improves grip, stability, and steering response.
  • Reduced Float: Minimizes rear-end instability under load.
  • Motorsport Ready: Ideal for track use and performance driving.
  • Durable Construction: Built to withstand demanding conditions.

Vehicle Fitment:

This Whiteline Rear Subframe Lock Kit is compatible with a wide range 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)
  • Saab 9-2X: 2005-2006 (Aero, Linear, 2.5i)

Experience a new level of control with the Whiteline KSB750, 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

Maximize Rear-End Precision with Whiteline's Rear Subframe Lock Kit

For Subaru enthusiasts seeking ultimate control and responsiveness from their vehicle's rear suspension, Whiteline's Rear Subframe Lock Kit (KSB750) is an essential upgrade. This kit is engineered to eliminate unwanted rear subframe movement, a common issue that can compromise alignment and handling, especially under spirited driving conditions.

Unlock Superior Alignment and Handling

The KSB750 kit works by effectively locking the rear subframe, preventing flex and deflection during cornering and acceleration. This precise control ensures that your rear wheels maintain their intended alignment settings dynamically, leading to improved grip, sharper turn-in, and a more predictable driving experience. By minimizing subframe movement, you'll notice a significant reduction in rear-end float and a more connected feel to the road.

Motorsport-Focused Design:

It's important to note that this kit is designed with motorsport applications in mind. The increased rigidity means it will introduce additional Noise, Vibration, and Harshness (NVH) into the cabin. For this reason, it's recommended for track use, autocross, or for drivers who prioritize performance over ultimate comfort. The hardware is designed for straightforward installation and removal, allowing for easy transitions between track days and street driving.

Key Features & Benefits:

  • Precise Alignment: Locks the rear subframe for consistent wheel alignment.
  • Enhanced Handling: Improves grip, stability, and steering response.
  • Reduced Float: Minimizes rear-end instability under load.
  • Motorsport Ready: Ideal for track use and performance driving.
  • Durable Construction: Built to withstand demanding conditions.

Vehicle Fitment:

This Whiteline Rear Subframe Lock Kit is compatible with a wide range 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)
  • Saab 9-2X: 2005-2006 (Aero, Linear, 2.5i)

Experience a new level of control with the Whiteline KSB750, 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

Maximize Rear-End Precision with Whiteline's Rear Subframe Lock Kit

For Subaru enthusiasts seeking ultimate control and responsiveness from their vehicle's rear suspension, Whiteline's Rear Subframe Lock Kit (KSB750) is an essential upgrade. This kit is engineered to eliminate unwanted rear subframe movement, a common issue that can compromise alignment and handling, especially under spirited driving conditions.

Unlock Superior Alignment and Handling

The KSB750 kit works by effectively locking the rear subframe, preventing flex and deflection during cornering and acceleration. This precise control ensures that your rear wheels maintain their intended alignment settings dynamically, leading to improved grip, sharper turn-in, and a more predictable driving experience. By minimizing subframe movement, you'll notice a significant reduction in rear-end float and a more connected feel to the road.

Motorsport-Focused Design:

It's important to note that this kit is designed with motorsport applications in mind. The increased rigidity means it will introduce additional Noise, Vibration, and Harshness (NVH) into the cabin. For this reason, it's recommended for track use, autocross, or for drivers who prioritize performance over ultimate comfort. The hardware is designed for straightforward installation and removal, allowing for easy transitions between track days and street driving.

Key Features & Benefits:

  • Precise Alignment: Locks the rear subframe for consistent wheel alignment.
  • Enhanced Handling: Improves grip, stability, and steering response.
  • Reduced Float: Minimizes rear-end instability under load.
  • Motorsport Ready: Ideal for track use and performance driving.
  • Durable Construction: Built to withstand demanding conditions.

Vehicle Fitment:

This Whiteline Rear Subframe Lock Kit is compatible with a wide range 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)
  • Saab 9-2X: 2005-2006 (Aero, Linear, 2.5i)

Experience a new level of control with the Whiteline KSB750, 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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