Steeda Mustang Clutch Spring Assist and Spring Perch Kit (2015-2020)

8 Review(s)
$45.04 (35%)
Steeda's ever so popular S550 Clutch spring assist is now available with a Heavy Duty Spring Perch assembly. Therefore eliminating the chances of you breaking the factory one upon installation or removal.
Part Number: 555 7027
Write a Review

Suggested Mods


Steeda's ever so popular S550 Clutch spring assist is now available with a Heavy Duty Spring Perch assembly. Therefore eliminating the chances of you breaking the factory one upon installation or removal.

Your 2015-2019 Mustang GT 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.

You asked for it and Steeda delivered... After multiple requests for a heavy duty aftermarket solution for broken factory spring perches Steeda went to work and designed a piece much stronger. So much so we guarantee it for life! Fits perfectly with the OEM spring or the Steeda clutch spring. Fits all models and will help convert your 2015-2018 GT350 over to the Steeda clutch spring which gives you a much better feel of your clutch.

Note: Clutch spring may be incompatible Ford Performance M-9452-M8 no-lift shift strategy. Will not fit the 2019+ GT350.

Part Included:
Product Benefits
  • 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

CA Residents: Cancer and Reproductive Harm WARNING

Fitment & Features


Manufacturer: Steeda Autosports
Made in USA: Yes

Installation Information:

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

Vehicle Fitment:

Fits Model Year: 2015, 2016, 2017, 2018, 2019, 2020

Customer Reviews

Rating Snapshot

Select a row below to filter reviews.

Average Customer Ratings


I honestly didn't thi k this would make much of a difference. Boy was I wrong! If you havent done this mod you need to. The clutch actually feels a little stiffer but engaging comes early and with ease
Did you find this helpful? 
Reviewed by: (Verified Buyer)  from Canada on 10/7/2019
Easy to install
There is no mistaking the quality of the Steeda products. When compared beside the factory part, you will notice how well built the assembled perch and assist spring is. If unsure how to install, YouTube has your back. Took 15 minutes now the pedal feels like it should.
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by: (Verified Buyer)  from Manitoba, Canada on 8/4/2019
Must Have!
Hated how heavy the stock clutch felt and a friend of mine recommended this for my 2019 Bullitt and it’s a night and day difference. You can actually feel the clutch and shift better and faster. 100% recommended..
Did you find this helpful?  3 of 3 Found Helpful
Reviewed by: (Verified Buyer)  from on 6/18/2019
2018 Shelby GT350 - shifting is now smoother thanks to this spring assembly
Having driven a number of performance cars w/ manual transmission, I was quite disappointed with the clutch in my new GT350. I was pleased to read on the forums about this low-cost solution. My biggest regret is not doing this spring upgrade sooner. Thanks to Steeda for this solution. Driving enjoyment has increased tremendously due to the much smoother clutch and shifting.
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by: (Verified Buyer)  from Texas on 4/14/2019
Wow, you have to replace yours
WOW, yes really... WOW !! I wasn’t convinced all the hype would stand up but boy was I wrong. I kept thinking, the factory clutch doesn’t feel that bad, surely this spring/mount assy can’t be that great. Well it is, really transformed the pedal feel, this is how it should’ve come from the factory. Linear resistance throughout the arc, amazing change. Thanks for the cool products guys!
Did you find this helpful?  2 of 2 Found Helpful
Reviewed by:  from Soddy Daisy on 8/24/2018
What a difference
I had recently purchased a 2015 GT and was beginning to think that I had forgotten how to drive a manual. If you are having issues with lurching in the lower gears and are beginning to think that you have forgotten how to drive a manual…This is your fix. This inexpensive mod cleared up those issues. It literally took 10 minutes to install and has made a world of difference. I must agree with the other reviews, referring to the spring, it is a MUST!
Did you find this helpful?  3 of 3 Found Helpful
Reviewed by:  from NC on 5/17/2018
Steeda makes some of the most quality parts hands down and this is no different. Nice lighter clutch feel where you get a honest sense of the clutch engagement. The oem part is absolute junk, this is a must have.
Did you find this helpful?  7 of 7 Found Helpful
Reviewed by:  from Louisville on 3/14/2018
Best Mod I've Done
Honestly this is how the car should have come from Ford. Taking out the stock 185lb/in spring was the first thing I did within the first week of owning my car. I hated the stock spring and was happy without one. Only problem was that my clutch pedal wouldn't come back up all the way. I decided to spend the money on the Steeda 35lb/in spring and perch kit (Since the stock plastic one broke on me). It was so easy to install, probably took me 10-15 seconds. Getting out the stock spring was so much harder. I honestly thought I was happy not having a spring at all..... until I drove with this mod. The Steeda spring made a world of a difference. The clutch engagement is much smoother and linear. It doesn't get rough/bucky towards the top like it used to. My mustang feels so nice to drive and now very similar to all the other manual cars I have owned. I couldn't be any happier. Plus the clutch comes back up all the way and doesn't have issues in the cold weather with engagement. Long Story Short..... BEST MOD I HAVE DONE SO FAR TO MY MUSTANG AND I RECOMMEND IT TO EVERYONE!!!!!!
Did you find this helpful?  3 of 3 Found Helpful
Reviewed by:  from HARRISON on 2/20/2018
There are no reviews for this product!

Related Items

Back to TOP
0 Items