Steeda Clutch Spring Assist and Spring Perch Upgrade Kit | 2015-2017 Ford Mustang (555-7027)

Steeda Autosports
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S550 Mustang Clutch Assist Spring Perch Kit by Steeda Autosports

Your 2015-2017 Mustang comes with a 185 lb/in clutch assist spring installed from the factory. This high-rate spring is what causes such a vague and disconnected clutch pedal feel. The clutch pedal travels in a circular arc, with the spring assist in the middle of that clutch pedal travel. The middle of that motion compresses the spring initially and then allows it to extend after the first 30 degrees of travel. The combination of a high-rate assist spring and motion of the pedal during engagement causes a non-linear and sometimes confusing pedal feel. Having a non-linear pedal feel makes it hard to modulate the clutch on your Mustang GT, EcoBoost or V6.

Many new Mustang owners have found that taking out the stock OE spring will give you somewhat similar results, but realistically the clutch becomes far too heavy especially if your Mustang is daily driven. Most owners fail to realize the prolonged effects of simply taking out your factory OE spring and not replacing it with another spring. By negating your factory clutch assist spring you will notice chatter/NVH from your clutch pedal. Your clutch pedal will never fully return to stock position without any assist spring, and over time your slave cylinder may begin leaking due to constant pressure on its seals from the clutch pedal not returning to the stock position. Avoid these problems in the future by installing our Steeda S550 Mustang Clutch Assist Spring 35 lb/in into your GT, EcoBoost or V6.

Our Steeda S550 Mustang Clutch Assist Spring 35 lb/in completely replaces the factory 185 lb/in assist spring. Our engineers have honed in on just the right amount of spring rate to get you the perfect clutch pedal feel you look for in a Mustang. This assist spring is manufactured from piano wire that naturally has high tensile strength and high elastic qualities. Our piano wire spring ensures a consistent spring rate and minimal sag even after repeated use. With the addition of our clutch assist spring, you will notice a much more linear feeling clutch - the reason being is that we take out much of the influence involved in your clutch pedal motion caused by the assist spring, allowing you to feel exactly what is happening with your clutch engagement.


  • Improve clutch pedal engagement feel
  • Consistent spring rate and minimal sag even after repeated use
  • More linear clutch feel
  • Heavy Duty design that's guaranteed for life
  • Avoid slave cylinder damage due to removal of stock clutch spring
  • 100% Made in the USA, in house in Valdosta GA


  • 2015 - 2017 Ford Mustang EcoBoost
  • 2015 - 2017 Ford Mustang V6
  • 2015 - 2017 Ford Mustang GT
  • 2015 - 2017 Ford Mustang Shelby GT350

What's In The Box?

  • 1 - S550 Clutch Spring Assist (555-7022)
  • 1 - S550 Clutch Assist Spring Perch (555-7024)
  • Necessary Hardware
  • Instructions/Manuals
  • Warranty Information


  • Tools Required: Basic Tools
  • Time of Install: About 30 Minutes
  • Level of Difficulty: Easy




Steeda Autosports Warranty

Customer Reviews

Based on 4 reviews
Mark Johnson
Easy to self install

Reduces amount of strength needed/ required to use clutch looks to be better made than the OEM that I replaced it with

David Harness
Perfect Feel

The Steeda upgrade kit is the perfect way to replace the odd feeling stock spring assist in your Mustang and introduce clutch feel into your car. Having the whole kit is great for just removing the old and putting in the new. It makes the clutch feel much better and is definitely worth the upgrade. Don’t forget to lubricate the Pearce so it doesn’t squeak as you push in and out on the clutch pedal.

Linear clutch feel

The new spring fixed the unpredictable clutch grab point from the factory. It feels more linear now and was well worth the money. Great service as well.

Quality customer service best price in the market and the Steeda product is great

555-7027 steda clutch spring I had never heard of this feature speed shop before.
They came up on a Google search with the best price right out of the gate for the spring combination perch Set
The competitor sold these separate at a cost of about 20% more.
I mistakenly pressed next day air saver And it would not make the delivery on time even though UPS label was already printed they went out of their way
At no additional cost and changed the shipping so I would get it before lunchtime great customer service
As far as the Steeda product goes I could not believe the night and day difference it changed the whole feel of the transmission
I was on the fence about buying a GT 350 because of the ultra weak clutch pedal feel
The mechanic said it took about three minutes to install and he could not believe the difference in the vehicle either
Love love love it
Great product great price great customer service keep up the great work
Thanks Wildv8