Steeda Stage 1 Handling Package - Sport Progressive (15-17 GT/V6)

Steeda Stage 1 Handling Package - Sport Progressive (15-17 GT/V6)

$649.95
$739.95
$90.00(12%)

555 2122 P

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Steeda Billet Sway Bar Mounts Upgrade

Give your 2015-2017 Mustang the proven performance of Steeda manufactured suspension parts. This Steeda Stage 1 Handling Package - Sport Progressive for your 2015-2017 Mustang GT or V6 is designed to improve cornering grip, handling balance, reduce brake dive, and reduce body roll while maintaining exceptional ride quality.

This Steeda Stage 1 Handling Package - Sport Progressive for your 2015-2017 Mustang GT or V6 will also lower the vehicle about 1.125" in the front and 1" in the rear, for a great appearance and improved weight distribution.

Our Steeda Stage 1 Handling Package - Sport Progressive come paired with our Steeda Mustang Sport Springs - Progressive. These springs are a great daily driving spring much like our other line of Steeda Springs, and are engineered to perform exceptionally on the track. The progressive rate of the springs will increase spring rate as your Mustang's body roll increases, giving you improved corner handling at high speeds.

Our sway bars have machined steel billet sway bar ends, whereas others on the market have coined ends. What does this mean? Our sway bar ends are machined out of billet steel round stock, in-house, on our multi-axis CNC lathes and go through hundreds of computer simulations to ensure the ultimate in strength and performance - this provides greater resistance to bending stresses, and has three major advantages:

  • These parts are less prone to cracking/fatigue failure on the ends themselves.
  • It also reduces unwanted deflection in the sway bar end. Excess deflection creates unwanted geometry changes, which physically changes your sway bar stiffness to a non-ideal rate.
  • With less unwanted deflection, our bars will 'wear out' slower - any spring will eventually become softer over time as it is cycled through its life, our bars will maintain their designed rate for longer with less unwanted deflection.

Our bar rates are developed and optimized through advanced vehicle dynamic simulation and through extensive real-world testing. We engineered these bars to control the vehicles' roll stiffness properly while still allowing you to run softer springs. This optimizes your overall grip and balance of the vehicle while still allowing you to maintain exceptional ride quality.

Package Includes

  • 555-1015 - 2015-2017 Steeda Mustang Front Sway Bar
  • 555-1016 - 2015-2017 Steeda Mustang Rear Sway Bar
  • 555-8210 - 2015-2017 Steeda Mustang Sport Springs - Progressive

Product Benefits

  • Lowers your 2015-2017 Mustang GT or V6 1.125" in the front and 1" in the rear
  • Improves overall vehicle handling while maintaining exceptional ride quality
  • Reduces body roll and brake dive
  • Improved cornering grip and handling balance
  • Increase spring rate as body roll increases
  • Fits coupe and convertible

Purchase your Steeda Stage 1 Handling Package - Sport Progressive for your 2015-2017 Mustang GT or V6 at Steeda Autosports today!

Tracks like a go kart now
On my previously stock GT non-PP i had a odd sensation while cornering that could best be described as a "rubber-band" feeling. I believe it was compliance of the subframe bushings. It was unnerving. Felt like the start of the tires breaking loose - but it wasn't. I installed the Steeda rear IRS bushing support kit and the IRS braces and the sensation went away. Much improved cornering afterward. I was inspired by the improvement so I added the Steeda springs and swaybars. Tracks like a go kart now.
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Reviewed by:  from Arkansas. on 5/9/2016
5/5
Love them
I just installed the Steeda Progressive springs a few weeks ago and love them. The car rides so much better and even handles better. Improvement all the way around. Once you go Steeda you never go back!
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Reviewed by:  from Florida. on 1/5/2016
5/5
Riding great so far, better than stock!
Finally got my Steeda progressive springs installed. Riding great so far, better than stock I would say, and the stance is sexy. Shout out to David for the help
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Reviewed by:  from Arizona. on 11/23/2015
5/5
I am a Steeda believer
The car is a totally different handling car. Took the wife for a ride today and she said it is smoother than before. Much less bouncy. That is good news to me. Cause if the wife is happy I am happy. But I will say that these mods have really changed my confidence in the car. I had one little 30mile spirited section with S curves on my way home that normally when they say 45mph.. you can take them at 55mph... I took them at 70mph and the car was just planted solid. No roll, no rebound and no breaking loose on the rear when I accelerated from the apex. It just transitioned smoothly and predictably. Now the only thing the wife did notice was the gear whine. Yes the Red differential bushing will cause some gear whine, but I have been told that replacing the stock gear oil in the rear end will help quiet that noise down. We will see as I will most likely change mine out here in the next week. Amsoil or Royal Purple is what a lot of people recommended. So, all in all, if someone is on the fence about these suspension upgrades, just do it. The guys at Steeda are top notch and know their stuff. Almost all of them have Mustangs and the owner even races them. A final shout out to [email protected] What a great help he was. He made sure everything was ready and there, his recommendations were spot on. David, again, Thank you man. I can hardly wait for the next batch of Steeda goodies come out.. Count me in already. I am a Steeda believer.
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Reviewed by:  from California. on 11/13/2015
5/5
The handling of the car is just perfect
I am beyond please with everything that Jamie did for the installation and alignment. David was an absolute pleasure to deal with in buying and setting up the appointment for me. Everyone at Steeda has been a joy. The car has been completely transformed. The ride quality with the progressive springs is 3 times better vs. the stock GTPP springs. The handling of the car is just perfect. It is so, so flat now when pushing the car hard in any type of turn. Brake dive has been greatly reduced. I would say by 80-90%. I can mash the brake pedal and it just stops, so tried and true. The front-end barely dives at all. This is from 70-75mph and just mashing the pedal. It truly begs for more speed when entering turns. Of course, this only on roads and not a race track or autoX course. Wheel hop has been greatly reduced. I still have a couple more parts to order to virtually eliminate it all together and those will be ordered at a later date. Shifting hard to 2nd gear, I just now get wheel spin and no hop. Only time I get a little hop is via a hard launch. But again, it is greatly reduced and doesn't happen all the time. The car is so quiet, no increase in NVH in anyway. This has been some of the best money I have ever spent on any car mods, PERIOD. Their parts deliver what they promise and produce outstanding results. Anyone on the fence, I highly recommend you go ahead and purchase their "stuff".
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Reviewed by:  from Georgia. on 7/18/2015
5/5
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