777 Performance S550 Chassis Mounted Carbon Splitter

[Ice_5.0]

Hello guys,

I am interested in getting the S550 chassis mounted carbon splitter from 777 performance for my 2023 mustang gt pp1. I contacted them asking which style should I order since I did not change my front fascia. They answered PP2 style is the way to go.

But I can't find any reviews or feedbacks on this product online. I love the design especially the thickness of this splitter. If anyone installed this bad boy on their mustangs, can you please share your experience with the installation? And maybe share some photos with us? Thanks a lot.

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[NightmareMoon]

You missed that they're all marked "pre-order" Doesn't sound like any are available yet, so nobody's going to give you reviews. You could be the first!

So I haven't used one of these 777 splitters, but if you want to humor me I can give you some general impressions based on the couple of splitters I've made for my own car.

First, don't set your expectations too high for performance. This should help a little with front end downforce, but splitters like this that just bolt right up to the front facia don't sit as low as you really want for downforce. A splitter wants to sit inconveniently low to the ground to work at it's best. Splitters that bolt up at the the factory body aren't really adding a ton, and your stock ford PP1 undertrays are usually pretty good for aero and include decent (smaller) ducts (this splitter's ducts are larger for sure, so that's a plus). It would be better if it extended farther back past the wheel wells where this one stops, but that makes a big item even bigger as far as shipping costs go.

I really wish there were pictures to see how far forward it sits past the factory bodywork. That would give you a much better idea what it will be like to live with this thing attached to your car w/r/t navigating driveways and ramp transitions. If a splitter extends too far forward, it helps performance (up to about 6"), but that can SERIOUSLY impact day to day driving. Too short and it just won't make much of an impact on aero.

It does look like a kinda fun part. While perhaps not a great value as far as performance goes, the ducts look decent and the price seems ok for what it looks like you're getting in that material. I bet it will look pretty good on the car.

Those quick latches aren't the most clever or reliable splitter mounting system, (I can say that because I use two on my own splitter (in addition to other better mounts) and they are barely passable, but passable at least). I expect to need to replace them after a year or two because of the grime that collects in those cups from rain and grime which gets in the way of them releasing properly.

I'm curious to see the rest of the mounting hardware. Those quick latches will mount to some sort of braces added to the body which I didn't see pictured.

Because this replaces the factory undertray, don't expect to acutally pop it off and on much in daily use, so the QD part is really only helpful if you're loading onto a trailer or something or because the factory undertray itself isn't "QD" and takes some time and a small effort to reinstall if you do QD remove the splitter.

 

[mavisky]

I've seen far less inspired designs, but I'm not sure I'm 100% on board with not needing a belly pan by putting this in place. Removing the belly pan entirely will mean that the area right behind the splitter will be much dirtier in the air than with the belly pan in place. Mounts are not ideal, but they will probably be ok.

 

[JC.S550]

Hello guys,

I am interested in getting the S550 chassis mounted carbon splitter from 777 performance for my 2023 mustang gt pp1. I contacted them asking which style should I order since I did not change my front fascia. They answered PP2 style is the way to go.

But I can't find any reviews or feedbacks on this product online. I love the design especially the thickness of this splitter. If anyone installed this bad boy on their mustangs, can you please share your experience with the installation? And maybe share some photos with us? Thanks a lot.

Hey,

I know it’s been a while since this was posted but I pre ordered mine over a year ago, finally got it last week and just finished the install with the help of the owner of the company, Matt.

The quality is better than anything I’ve seen so far. I do not track my car so I am by no means an expert on the performance gains to be had with this. I was just tired of the cheap abs plastic stuff that’s out there and wanted something strong that will last.

The mounting hardware consists of stainless steel bolts and brackets that mount to both the crash bar and frame beneath the headlight housing. There are two screw in anti theft plates that tighten up the splitter which need a key for loosening before you can quick release the splitter.

My advice when installing this is take your time and be sure everything is aligned before tightening and throwing the bumper back on. The male plugs that lock into the quick release need to be loosened or tightened so that they sit at the correct height, otherwise the quick release will not engage. You also need to be sure the brackets are aligned as well or the bumper will not sit flush with the splitter (still have slight gap with mine).

I thought I’d also mention that since you no longer use the belly pan, you will not have a way to secure the inner part of the fender liner. So if you want to retain the liner you will need to figure out a way to secure it. I haven’t driven yet with the splitter so time will tell how it holds up. Hope this helps!

*Forgot to add that fender well intakes will obstruct the side mount by the headlight, I had to buy a shorter filter to make it fit

 

[mavisky]

No belly pan, no wheel well liners, tiny protrusion....I know the GT350's are spoiled with functional splitter options, but this seems to have a lot of negative side effects with it. I built my own for chassis mounted splitter for half the price and seems way better than this.

 

[JC.S550]

No belly pan, no wheel well liners, tiny protrusion....I know the GT350's are spoiled with functional splitter options, but this seems to have a lot of negative side effects with it. I built my own for chassis mounted splitter for half the price and seems way better than this.

That’s a killer setup forsure.

There’s just not many options for GTs like you said and I was just looking for something strong and sleek like the PP2, just have to solve the fender liner problem though if you have any ideas…

 

[mavisky]

Take aome closer photos showing which connectors are missing. The problem with the Non Shelby models is that the fender liners are a more flexible material making securing them well even more important. Should be a way to get them to attach somehow, but without pics of the exqxt connections you're missing its hard to offer ideas.

 

[JC.S550]

Take aome closer photos showing which connectors are missing. The problem with the Non Shelby models is that the fender liners are a more flexible material making securing them well even more important. Should be a way to get them to attach somehow, but without pics of the exqxt connections you're missing its hard to offer ideas.

Tried to get some decent photos, the missing pins would attach where the oem air ducts are on the belly pan.
777 offers air ducts as an option now but I’m unsure if they have pin holes you could re attach it to, I’ll have to find out.

 

[mavisky]

Well given how little it protrudes you'll definitely want those splitter diffusers to make any appreciable amount of downforce.

Also I'd grab some aluminum strap from home depot and about 4 bolts per side and just make some L brackets to mount that up. Ahould be easy.

 

[JC.S550]

Well given how little it protrudes you'll definitely want those splitter diffusers to make any appreciable amount of downforce.

Also I'd grab some aluminum strap from home depot and about 4 bolts per side and just make some L brackets to mount that up. Ahould be easy.

I’ll give that a shot thanks for the help.

 

[mavisky]

You might also be able to look into aftermarket splitter diffusers and you might even be able to incorporate those into the splitter you have and might even be able to use that as one of the mounting points.

Professional Awesome and 9 Lives Racing both offer standalone splitter diffusers I believe.

That being said not running a fenderliner is terrible for aero so it's in your best interest to find a way to run it. I'd also think that with a few windows cut into it you should be able to reuse the belly pan. The belly pan helps clean up the air under the engine and front subframe considerably. All of the top splitter makers still allow you to use yours with a few holes made. I still run my belly pan under my chassis mounted splitter, but as you can see I did have to notch the undertray for the mounts.

 

[JC.S550]

You might also be able to look into aftermarket splitter diffusers and you might even be able to incorporate those into the splitter you have and might even be able to use that as one of the mounting points.

Professional Awesome and 9 Lives Racing both offer standalone splitter diffusers I believe.

That being said not running a fenderliner is terrible for aero so it's in your best interest to find a way to run it. I'd also think that with a few windows cut into it you should be able to reuse the belly pan. The belly pan helps clean up the air under the engine and front subframe considerably. All of the top splitter makers still allow you to use yours with a few holes made. I still run my belly pan under my chassis mounted splitter, but as you can see I did have to notch the undertray for the mounts.

I was actually thinking of doing just that, cutting out points for the belly pan to go through the chassis mounts. Seems like a good option to keep everything together and OEM like.

 

[mavisky]

I was actually thinking of doing just that, cutting out points for the belly pan to go through the chassis mounts. Seems like a good option to keep everything together and OEM like.

100% can't believe they would just suggest you remove it entirely as opposed to making a few strategic openings for their mounting hardware to pass through.

 

[JC.S550]

100% can't believe they would just suggest you remove it entirely as opposed to making a few strategic openings for their mounting hardware to pass through.

I believe the belly pan for PP cars sit a bit lower towards the rear so there could be an issue with sandwiching them together beneath the k member, there’s zero room left as it is.

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