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Ford Performance Lowering K-Springs - Coupe (05-14 GT)

Market Price $216.99 You Save 17% ($36.00)
Our Price

$180.99

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  • Item 24022
  • MPN# M-5300-KA

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Features, Video & Details

  • Aggressive Muscular Stance
  • Improves Handling
  • Lowers Center of Gravity
  • Progressive Spring Rate
  • Estimated Drop: Front - 1.5” Rear - 1.5”
  • Fits 2005-2014 GT Coupes
  • Clears Stock and Aftermarket Wheels & Tires.

Review & Installation Video

Review & Install Video

Improves Handling. Installing a set of progressive rate Ford Racing K-Springs will lower your Mustang's center of gravity, which will reduce squat during acceleration, body roll in the corners, and excessive nose-dive under hard braking. Ford Racing K-Springs are great for daily driving, street, and even occasional track use.

Aggressive Stance. The Ford Racing K-Springs not only improve the handling of your S197 Mustang, but they also improve the overall appearance by lowering the ride height approximately 1.5" to eliminate that nasty raised 4x4 truck look for a more aggressive muscle car stance.

Clears Stock and Aftermarket Wheels & Tires. These lowering springs were engineered to be compatible with your stock size wheels and tires, as well as AmericanMuscle’s pre-configured wheel and tire combo kits (specific to your generation), to assure proper clearance with no rubbing issues.

Application. This set of four Ford Racing K-Springs are designed specifically for use on the 2005 to 2010 GT Mustangs Coupes. They will also fit 2011 and newer GT Coupes when used in combination with Ford Racing M-18183-C upper strut mounts and M-18000-A dampers (sold separately). Does not fit V6 or convertible models.

Fitment: 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

What's in the Box
Hardware included:
  • (4) Springs
  • (2) Strut Boots
Installation Info
Tech Specs
Springs Specifications
Spring Rate: Front: 228 lb/in.
Rear: 199.5 lb/in.
Usage: Street
Year: 2005-2014 Model: GT Coupes
Progressive or Standard: Progressive Estimated Drop: 1.5"F / 1.5" R
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • Bullitt - 08, 09
  • GT - 05, 06, 07, 08, 09, 10, 11, 12, 13, 14

Will also fit 2011 and newer GT Coupes when used in combination with Ford Racing M-18183-C upper strut mounts and M-18000-A dampers (sold separately). Does not fit convertible models

Most Helpful Reviews

5/5
Ford K Springs

All I have to say was wow! my car looks so sexy, I cant stop staring at it and performance wise, its a blast to drive. I also put kyb struts and shocks that I also purchased at American muscle..I will ...

Read More
Helpful (1)

5/5
K Springs

These springs are nice. I think the drop is perfect. Fender gap is reduced, but the car isn't slammed. They aren't harsh at all, and they work well with the FRPP dampers and sway bars.

Helpful (1)

Overall Rating 4.9 out of 5 stars
Read All 100+ Reviews

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12 Questions / 6 Answers

Ask a Question

will these spring fit a 2013 v6?

mustang340hp

  • Hello, unfortunately the Ford Performance Lowering K-Springs - Coupe (05-14 GT) will not fit the V6 Model, but we do have the correct one for you 2013 V6, Ford Performance Lowering N-Springs - Coupe (05-14 V6) http://www.americanmuscle.com/n-springs-0511-v6.html

    Nuno

    Helpful (1)

will these work with Koni STR T? I'm also using gt500 strut mounts.

Gabe

  • If you have a 2011-2014 Mustang GT as long as you have the Ford Performance GT500 Style Strut Mount Upgrade (05-14 All) item #50273 (www.americanmuscle.com/frpp-gt500-strutmount-0512.html) and the Ford Performance Dynamic Shock & Strut Kit (05-14 GT, V6) item #50525 (www.americanmuscle.com/frpp-shockstrut-0514gtv6.html). If you have the 2005-2010 GT these will work in conjunction with the KONI STR.T Shock & Strut Kit (05-10 All) item #393157 (www.americanmuscle.com/koni-strt-shock-strut-kit-0510.html).

    KevinD92

    Helpful (0)

Will these springs work with other brands of dampeners like Koni or Bilstein?

MBGuy329

  • It is recommended with these Ford Performance Lowering K-springs to stay with the Ford Performance brand when modifying other parts of the suspension.

    SalC7

    Helpful (0)

Can you still go over speed bumps?

BlackSunshine

  • These Springs will only lower your car 1.5". That will be perfectly fine for going over speed bumps. Though, if you do have a chin splitter, you may want to approach the speed bumps at an angle, just in case it gets caught.

    AshleyK

    Helpful (0)

I just installed these this week with my new wheels and tires. I also got new wheels and tires put on today. Alignment was done as well with the mount and balance for the tires. How much will these springs affect my camber? Will it be enough to have to buy adjustable camber bolts?

JamesMay

  • Installation of these springs will require camber bolts or caster camber plates to be installed as well as an alignment performed.

    AMSam

    Helpful (0)

Answer This Question

Is a bump steer kit needed with Ford Racing K-Springs? I have read all reviews and no one mentions using a bump steer kit.

Buchjr1

  • These springs lower the GT 1.5 inches all around. If you install a 2" lowering kit, you would most likely require a bump steer kit. Remember after you install the new springs. Have the vehicle re-aligned Duke7

    Duke7

    Helpful (0)

Answer This Question

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Customer Reviews (100+) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Full Day

Installation Cost:$250-$500

  • Handling Improvement 4.652174 4.7
  • Ride Quality 4.391304 4.4
  • Appearance 4.826087 4.8
  • Bang For Your Buck 4.884058 4.9



  • 5/5

    Installation Time: Afternoon

    October 30, 2016

    Sexy looking mustang

    It was a Saturday after work driveway install, finished project was a such a great look!

    BADBOY

    Year: 2014 Submodel: GT

    Helpful (1)

  • 4/5

    Installation Time: Full Day

    May 22, 2013

    Good product and good price

    I installed these springs by myself in about 1 (long) day without ever having done this before. Before this job all I have ever done on my car was change the brake pads/rotors and minor maintenance like change the oil and spark plugs. The stance is much nicer looking and the ride is more firm on hard stops and launches. Some tips on the install: 1. use the biggest wrench you have if you only have hand tools- some of the bolts are trouble. 2. after you have the front or rear on jack stands, use a jack or something to help hold up the rear axle slightly and front struts while you are working - this helps with relieving tension on bolts and other suspension parts. 3. in the rear, be sure not to jack up the car all the way with the factory springs because the lower springs will increase the distance of suspension travel and your jack will not be able to get high enough to get the jack stands out - I had to put the jack on wood blocks to get more height (very dangerous if the blocks give or move). 4. You will almost certainly need an impact wrench to tighten the front strut bolts (one per side) - I got the nuts onto the bolts but after a few turns with a hand tool it just started spinning the strut. There's no good way to hold the strut in place (without possibly damaging it) while you turn the nut. I installed it anyway and drove down the road (very slowly and carfully) to the local mechanic and they tightened it up in about 30 seconds with a few "zings" of an impact wrench. It moved the nut down the bolt about 3-4". Rides great now! Some good install guides online if you do a google search.

    Jlew

    Year: 2012 Submodel: GT The Woodlands, TX, USA

    Helpful (2)

  • 5/5

    Installation Time: Full Day

    November 23, 2012

    K Springs

    These springs are nice. I think the drop is perfect. Fender gap is reduced, but the car isn't slammed. They aren't harsh at all, and they work well with the FRPP dampers and sway bars.

    DevGittinJr

    Year: 2009 Submodel: Bullitt Longview, TX

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    January 23, 2012

    Low is the way to go.

    Simple install if you follow the guide on the page. You will need a front end alignment when finished. Really enhances the cornering and stance.

    Bicyclebob

    Year: 2007 Submodel: GT Bellingham, WA

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    October 28, 2011

    Looks great, Drives great!

    These are the best springs I have ever owned. My car handles great, all the wheel hop is gone at launch, and it looks great too! Plus you have to have faith when installing Ford Racing Parts!!

    TimB

    Year: 2007 Submodel: GT

    Helpful (1)

  • 5/5

    July 16, 2011

    Ford K Springs

    All I have to say was wow! my car looks so sexy, I cant stop staring at it and performance wise, its a blast to drive. I also put kyb struts and shocks that I also purchased at American muscle..I will always buy from American Muscle..shipping is super fast. I am uber pleased.

    Javier

    Year: 2005 Submodel: GT

    Helpful (1)

  • 5/5

    May 22, 2011

    worth every penny

    i had them on in about 2 hours easy install there is no wheel hop whatsoever either, if you dont have these for your s197, you need them

    steve

    Year: 2010 Submodel: GT

    Helpful (3)

  • 5/5

    February 24, 2011

    !!! Important info for use on 2011 GT's

    The following info is from personal experience of a guy with more than 35 years of wrenching experience. If you want to use the "K" springs on the 2011 GT, read the FRPP catalog carefully. The M-18000-A struts/dampers and the FRPP M-18183-C strut mounts are a package deal - not a menu deal. The 2011 strut "perch" is different, and the mounts are taller, so the 2005-2010 struts do not seat properly on the stock mounts. Oh, you will read on the 'Net that they work fine, and Ford is not clear on this point, but after we did all the work, we found that using the "K" springs with the stock mounts allowed too much play, and did not bode well for long-term stability/safety/wear. After numerous calls to FRPP, here is the right setup for the 2011 GT: 1) 5300-K springs 2) M-18183-C strunt mounts 3) M-18000-A struts/dampers Once you get all these installed correctly, the end result is very sweet: greatly reduced sway, crisp turn-in, greatly reduced nose-dive under braking, and sharper handling all around. The car also looks great with the 1.5" drop! Looks both smaller and meaner, as a sports car should look. Ride is a bit choppier, especially if you decide to ignore these recs and stay with the stock dampers - they are not setup for the taller 2011 strut mounts. FRPP should be clear in their catalog that the 3 parts are required; when I read the first 2011 catalog and spoke to someone at FRPP, it seemed that the dampers were considered a enhancement; no, they are required to make the whole package work right and be safe. Thanks to Steve Horn at Ford Racing Perf Parts for helping me sort this out - I had to eat the double labor time though. Hope this helps.

    Glenn

    Year: 2011 Submodel: GT

    Helpful (46)

  • 5/5

    May 08, 2010

    Ford stock vs Ford K spring

    The Ford K springs are worth the money. The ride is much firmer the car looks better and the awful body roll when cornering has been substantially reduced. Beware that lowering the car 1-1/2" makes curbs, humps and holes more hazardous to the low points under the car. I have a couple of scrapes after 2 weeks. Fitting the springs yourself is straight forward and the online instructions are very accurate. Depending on the equipment you have and the skill level it could take longer than the instructions indicated. I would allow at least 3 hours. Getting the old parts off takes more time than putting the new parts on. Compressing and decompressing the stock springs was time consuming with the $10 spring compressors from Harbor Freight Tools. I think that the addition of stiffer shock absorbers would also improve the cars handling and see them as a future purchase. One final point the ride is harder so if you like a softer ride and take corners like an old lady these are not for you.

    Dave H

    Helpful (33)

  • 5/5

    May 17, 2011

    Soooo Easy

    These springs are great! They dropped the car just perfect. Not so low that you have to worry about scraping your undercarriage on everything. The ride is a little bit stiffer but the handling gain is well worth it. Install was sooo freakin easy! It took about 1 1/2 hours with 3 of us taking our time. You wont regret going with these springs. They will clear 285/40/18's no problem, they leave just enough room that you could go with a little bit taller tire. I hope this helps!

    Jake

    Year: 2011 Submodel: GT

    Helpful (22)

  • 5/5

    October 22, 2010

    Great Look

    These springs gave my car the aggressive look that I was looking for. Best of all, they ride great and perform extremely well. Very Satisfied!!!

    Mario

    Helpful (13)

  • 5/5

    November 06, 2010

    2009 Bullitt with Ford Racing Lowering Springs

    I love these springs! I chose to go with the Ford Racing Springs over all the others because numerous shops told me they ride the best out of all the lowering springs out there and will give it a very aggresive stance. I also chose to go with the Ford Racing Springs because the Bullitt has some Ford Racing parts on it from the factory. It is a must have, aggresive stance good ride, and good price. What more can you ask for?

    Austin

    Year: 2009

    Helpful (13)

  • 5/5

    March 22, 2010

    perfect height and ride

    These springs gave me the perfect drop. It's still clean and classy, but really meated up the stance. Ride is fantastic, road feel much better, and bumps are actually more pleasant since there's less play in the susp. Handling is great too! I included Tokico shocks and struts and the Max. Motorsports camber plates. Also have Steeda strut bar. All together perfect!

    KenD

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    September 12, 2011

    Lookin' Good

    Quit contemplating, buy them already! Straight forward install on my 2011 GT/CS, which came stock 19" wheels. Installed by myself in a few hours, having really no idea what I was doing, just following a popular how-to on line. If you have a decent set of tools and mechanical inclination, you'll have no problem. I'd say air tools are a must for removing the strut nuts. No spring compressor needed with the front of the car raised. Love the improved look and less body roll. I am currently using all stock parts (struts, strut mounts, pan hard bar) with zero issues. No clicks, no clunking or wierdness. My local alignment shop only charged me an inspection fee, because everything was still well within spec! Definitely stoked!

    smranger

    Year: 2011 Submodel: GT

    Helpful (8)

  • 5/5

    August 18, 2009

    Ford Racing K-Springs

    Great product, easy to install, and look great on my 07 GT. Fills the fender wells nicely with the 18x10 285-40s and 18x9 255-45s, also purchased at AM. Thanks

    Robert W> Carroll

    Year: 2007 Submodel: GT

    Helpful (9)

  • 5/5

    March 17, 2010

    perfect drop

    mine is the blacked out with the passenger side pic...no spoiler with the black saleens. i installed them with minimal help in an afternoon and im a novice. perfect height and much improved handling. great buy.

    jason

    Helpful (5)

  • 5/5

    Installation Time: Afternoon

    August 16, 2012

    EASY INSTALL

    What a difference in appearance. The Install time was minimal and easy. It lowered the car 1&1/2 inches and looks like an American Muscle car should. this also reduced the squatting during launch as well as wheel hop tremendously. thanks again A/M.

    TANKFIXR

    Year: 2011 Submodel: GT

    Helpful (3)

  • 5/5

    January 01, 2010

    Ford K Springs

    These are a great deal. Easy install. Ride quality is a little firmer/bouncy with the stock struts (some Tokicos wil fix that). Drop height is just right. I have a CDC Classic chin spoiler. I was worried that the spioler would have clearance issues, but all is well. The spioler was dropped by 1/2 in. These springs really give the Stang some attitude!

    Tony

    Helpful (4)

  • 5/5

    May 23, 2011

    Ford Racing Lowering K-Springs

    I added new rimes and tires and it became evident that car sat to high. Really gives the car an aggressive look.

    Brian C

    Year: 2011 Submodel: GT

    Helpful (2)

  • 5/5

    October 27, 2010

    FRPP K Springs

    I installed these with Koni shocks and struts! The ride is awsome! Soft and tight! It does lower the car quite a lot though! Anyways since this is a quality rating I'll give it 5 stars!

    Anthony

    Helpful (2)

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