Xtreme-Grip™ Coil-Over System, Rear, 2005-2014 Mustang, Track




With longevity and performance as priorities, all components use high-grade materials ideal for the application with durable finishes. Damper valving has been optimized and will take you to the next level of performance.

Top Technology Proven on Track

Looking for best-in-class performance? This coil-over system applies race-winning technology to your vehicle by providing precision chassis control, ride height and geometry alignment.

CorteX Racing has developed Mustang-specific line of coil-overs based on years of street driving and track testing.




  • Track Springs and valving
  • Coil-over hardware
  • Mounting brackets and hardware


Damper Upgrades * 


Xtreme-Grip Rear Coil-Over System, Single Adjustable, Track

Vehicles: Ford Mustang (2005-2014) 


Easy Install – DIY

Installation is straightforward as coilover hardware, springs, and all mounting brackets are included.

JRi SA The are aluminum bodied JRi SA rear shocks that are custom valved. Although single adjustable, these shocks change both bump and rebound forces when adjusted.

The benefit of these shocks is that they have a convenient adjustment knob that is easy to reach with the shock on the vehicle making it a breeze to make changes on the street or at the track.  Spring rates can be customized depending on the application.

JRi DA, Double Adjustable Rear Coil-Over Package comes with JRi DA rear shocks. These shocks have a wide range of adjustments suitable for a vehicle that sees the track often while also driven on the street. Spring rates are customizable depending on the primary use of the vehicle.


SA = Single Adjustable
DA = Double Adjustable

  • JRi ST08 3-way Rear Dampers
  • JRi ST08 4-way Rear Dampers
  • Penske 7500 DA Rear Dampers
  • Penske 8300 DA Rear Dampers
  • Penske 8760 3-way Rear Dampers
  • Ohlins TTX36IL Rear Dampers

Vehicles: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014

05, 06, 07, 08, 09, 10, 11, 12, 13, 14,

Additional information

Weight 25 lbs
Dimensions 30 × 14 × 10 in


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