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


SKU: SHK-40-1000S


Optimized for Street, yet Designed to Win

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


This coil-over system apply race-winning technology to your vehicle, with attention to details ideal for comfort and low NVH desired in street driving.

  • Precision chassis control
  • Ride height and geometry alignment
  • Optimized damper valving



  • Street Springs and valving
  • Coil over hardware
  • Mounting brackets and hardware


Damper Upgrades * 


Xtreme-Grip Rear Coil-Over System, Street


Vehicles: Ford Mustang (2005-2014) 

This is an entry-level competition upgrade coilover that is suited for both street and track use depending on choice of spring rates.

These are not the Koni sport (Koni yellow) street shock.  It is a steel-bodied damper that is extremely durable and suited for spring rates up to 500 lb/in. These dampers are non-rebuildable

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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