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2011-2014 Ford F150 3.5L / 5.0L / 6.2L Diamond Eye 4 inch Aluminized Single-Exit Cat-Back Exhaust - No Tip | K3330A

2011-2014 F150 Diamond Eye 4 inch Aluminized Single-Exit Cat-Back Exhaust - No Tip - 2011-2014 F150 Diamond Eye 4 inch Aluminized Single-Exit Cat-Back Exhaust - No Tip
2011-2014 F150 Diamond Eye 4 inch Aluminized Single-Exit Cat-Back Exhaust - No Tip
SKU K3330A
19 Review(s)
On sale: $449.00 $855.71
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Retail Price: $855.71
Your Savings: $406.71 (48%)
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12 Customer Q&A(s)
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Average Rating
diamond eye 4 exhaust system for ecoboost
immeadiately noticed improvement in acceleration but muffler is very loud in the cab area. will check for exhaust leak around muffler
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Reviewed by:  from Austin, texas on 9/11/2013
4
Average Rating
Best Exhaust under $500! Diamond Eye 4 Exhaust - 2014 5.0 FX4
This exhaust kit is a great value! Very mild yet noticeable tone over stock at idle and low throttle without adding a lot of sound inside the cab. Comes alive when you put the pedal down. Install was very easy. Took me less than an hour to drop the old exhaust and install the new one by myself in my driveway. No power tools, no jack stands, no lift,just a pair of ratchets and sockets. I left off the tail pipe section so it just dumps behind the axle for a clean no tip look since I have a blacked out truck. Very Very pleased with this exhaust! Especially for the money!
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Reviewed by:  from Florida on 6/27/2014
5
Average Rating
2014 crew long box 4x4
Easy removal, install tricky, attaching exhaust to flange at the y pipe. Seal was not 100% unless you have exhaust mounted at exact angle. Idle sounds great, drone under load at 1500 rpm through 3000. This is a good thing if you want to save fuel. I backed off at those rpms, drone went away and I was still accelerating. Raspy when floored but only if your window is down. Worth every penny. The F150 sounds like a truck now.
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Reviewed by:  (Verified Buyer)  from vancouver on 11/9/2014
4
Average Rating
2013 F150 5.0L Lariat Supercrew 4x4
Wow. I knew it would be louder, but this is just awesome. Nice deep rumble, nothing crazy. Install wasn't too bad. Sounds like a totally different truck
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Reviewed by:  (Verified Buyer)  from Raeford, NC on 11/5/2016
5
Average Rating
2011, Ford, F-150 3.5 ecoboost
The exhaust sounds so much better than what I was expecting! The sound is very deep and my turbos are much louder from the exhaust. The only problem that I ran into was cutting the piece of exhaust to make it fit. I used a reciprocating saw that cut the metal just fine but I shortened the piece a little too short.
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Reviewed by:  from Vernal on 11/7/2016
5
Average Rating
Pretty Sweet
The 4 inch exhaust fits and looks great on my F150. It sounds good at all RPM on the 5.0 except when it's rapped out at full throttle, it pops and claps. Overall I am happy and would recommend it to anyone. Especially for the price.
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Reviewed by:  from Austin, Texas on 6/28/2014
4
Average Rating
2012 Ford F150 3.5 Ecobbost
Fast shipping and quality parts. Take your time lining up all the fittings. Watch youtube videos and get ready for an awesome sound. No more puff puff from the back end. New system rumbles when your on it but still easy going when your just cruising. Thanks Stage 3 and Diamond Eye. Cannot beat the price!
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Reviewed by:  (Verified Buyer)  from Connecticut on 9/24/2015
5
Average Rating
2014 Ford STX 4x4 5.0L
Looks great under the truck with a black exhaust tip! Sound is deep and smooth. Can't buy a better exhaust for the money!
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Reviewed by:  (Verified Buyer)  from Fayetteville, AR on 6/17/2016
5
Average Rating
2012 5.0
Install was straight forward, definitely helps to have another person just for extra set of hands. Sounds great, nice low grumble sound at startup and idle, not intrusive but better than stock. At WOT this this just screams. Slight drone in the cab at cruising RPM but not nearly as bad as some that I have heard. Overall extremely pleased with the purchase.
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Reviewed by:  (Verified Buyer)  from Minneapolis on 8/23/2017
5
Average Rating
2011 ford f150 5.0 v8
Fast shipping, came within 2 days. Took about 45 mins to install wasnt hard at all. I took the muffler out an replaced it with a straight piece of pipe an wow! It is loud nkw just how I wanted it.
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Reviewed by:  from Bernville on 12/25/2018
5
Average Rating
2013 F150 FX4 Ecoboost
Sounds pretty good. Was easy to install. I'm happy with this product. I did see a .75 mpg gain. I have install an Afe cold air intake and ordered a SCT X4 tuner with 5 custom tunes from 5 star. I now have to take my truck to the dealer ship to update the computer. I haven't seen any more mpg gains with the intake, but it has only been a few days and I have been warming my truck in the mornings and doing a little more in town driving.
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Reviewed by:  (Verified Buyer)  from Texas on 1/31/2019
4
Average Rating
2013 F-150 Limited
The exhaust makes a big different in performance and you can hear when you are in the gas. The exhaust system and tip arrived earlier that was said. I'm loving it. thanks
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Reviewed by:  from Thorton on 3/25/2019
5
Average Rating
2013 f-150 lariat 5.0
Not a bad system. Much more tamed than I thought it was gonna be. Next to no drone in the cab and has a real deep sound. The directions are absolutely terrible. But with a little common sense you can figure it out. Did it by myself in the driveway in about an hour. Had to jack up the right side to slide the factory exhaust out. An electric impact is your best friend on this job.
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Reviewed by:  from Arkansas on 6/15/2019
4
Average Rating
2014 f150 Fx4 5.0
Install was super easy and exhaust is great quality although not as loud as I would like...I would recommend diamond allowing an option for a resonator instead of a muffler but still sounds way better than stock.
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Reviewed by:  from TX on 7/28/2019
4
Average Rating
14 F150 5.0 Coyote
Sounds great
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Reviewed by:  from Torrington, WY on 8/14/2019
5
Average Rating
2014 F150 Fx4
Sounds great! Easy install
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Reviewed by:  from Massachusetts on 6/19/2020
5
Average Rating
2014 f150 5.0
So far I am liking this exhaust it looks good and is quiet at idle and not too loud at cruising speeds before this exhaust I had cut the factory muffler off and straight piped it and the truck has gotten quieter at idle and very similar hitting the throttle so I’m enjoying this exhaust a lot
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Reviewed by:  from Kentucky on 10/7/2021
5
Average Rating
2012 F150 5.0
Easy to install. Fit is great! Great sound at idle and under acceleration. Does have drone at 1590-2000 rpm.
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Reviewed by:  (Verified Buyer)  from Houston, Texas on 3/18/2023
5
Average Rating
2014 f150 3.5 ecoboost
This exhaust is very nice, very quiet for the ecoboost. By size you would think it’s the loudest exhaust on the planet .i had a muffler swap prior which was loud, droned like crazy, towing up grades would drive me crazy. Love the diamond eye 4”. Install took about 1hr solo, extra set of hands would easily cut that in half .
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Reviewed by:  from Sacramento on 2/1/2026
5
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Customer Question how long is the muffler

Asked by: Jesus - 4/19/2022
Customer Answer According to Diamond Eye, this cat-back kit comes with a 30" muffler.
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Answer provided by: Jason@Stage3 (4/20/2022)
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Customer Question Will this exhaust fit the more unpopular 163" wheelbase (supercab long bed)?

Asked by: Aaron belden - 11/22/2017
Customer Answer Yep. This cat-back kit comes with an extension pipe that allows it to fit all wheelbase lengths, including 163" wheelbase trucks.
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Answer provided by: Jason@Stage3 (11/24/2017)
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Customer Question If this system is 4" piping how will it adapt to my stock system from the cat back which I believe is 2.5"?

Asked by: BDK96 - 6/19/2017
Customer Answer The cat-back has a step-down flange for hooking into your factory Y-pipe.
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Answer provided by: Jason@Stage3 (6/20/2017)
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Customer Question I have a 2013 f150 stx with the 6'7" bed does this require me to cut any thing or is it a simple install?

Asked by: Jake - 4/19/2017
Customer Answer Whether or not you'll have to trim also depends on your cab length. If you have a SuperCrew and a 6.5ft bed (157" wheelbase), then you'd need to slightly trim the extension pipe included in the kit. If you have a SuperCab with a 6.5ft bed (145" wheelbase), you would not have to trim.
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Answer provided by: Jason@Stage3 (4/20/2017)
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Customer Question Are you able to get this with band clamps or does it come with crush clamps?

Asked by: Taylor - 4/8/2017
Customer Answer Unfortunately, this kit only comes with U-bolt style exhaust clamps and hangar clamps.
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Answer provided by: Jason@Stage3 (4/10/2017)
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Customer Question I have 2011 F150 Crew Cab with the 5.5ft bed. Am I going to need to do any cutting in order to install this on my truck?

Asked by: Jake - 3/19/2017
Customer Answer This kit does not require trimming for 145" wheelbase F150, like those with SuperCrew cabs and 5.5ft beds.
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Answer provided by: Jason@Stage3 (3/20/2017)
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Customer Question Does this system creats drone inside the cab? On the video clip sounds great... just wondering about the incab sound regards

Asked by: Eric - 12/16/2016
Customer Answer Drone is minimal in-cab. While you can definitely tell you have an aftermarket exhaust while cruising, it's not overbearing.
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Answer provided by: Jason@Stage3 (12/20/2016)
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Customer Question I have a 2014 5.0 f150 I am thinking bout doing this kit does that kit I only come with 1 hanger after the muffler or does it have more that's not pictured ?

Asked by: Brandon - 12/30/2015
Customer Answer The kit only has one hangar welded on, however, hangar clamps are included as part of the system's hardware to complete the installation.
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Answer provided by: Jason@Stage3 (12/30/2015)
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Customer Question Hello. I installed this on my f150 3.5l and sounds nice at idle but when I tested on the road and romped on the gas I herd a few pops out of the back end. Almost like a backfire but not loud and a slight lack in power when it happened. I was wondering if you have any ideas what it might be? And is it hurting my truck?

Asked by: Brian - 12/8/2015
Customer Answer If it's only happening when you're on the throttle, then you're likely getting spar blow-out, which can be solved by using new spark plugs with tighter gaps. It's unlikely the exhaust kit, though your best bet would be to call us directly at 1-877-578-2433 if spark plugs aren't your issue, or if you believe you're having other problems.
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Answer provided by: Jason@Stage3 (12/8/2015)
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Customer Question DO YOU HAVE TO TUNE AFTER INSTALLING? GOING ON 2014 F150 5.0

Asked by: RICHARD - 11/4/2014
Customer Answer You do not have to tune for this cat-back, or any other cat-back exhaust system on the 5.0L F150s.
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Answer provided by: Jason@Stage3 (11/5/2014)
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Customer Question Will this exhaust system fit the longer 6.5ft box - 157" wheel base?

Asked by: f150 crew - 10/25/2014
Customer Answer It will, indeed. The kit comes with an intermediate pipe that simply needs to be trimmed by a few inches in order to fit your truck.
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Answer provided by: Jason@Stage3 (10/27/2014)
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Customer Question WIll the stock tip from my Platinum fit on this exhaust? Looking for a stock looking 4'' Exhaust.

Asked by: F150 6.2L - 3/6/2014
Customer Answer Your factory tip will not fit this exhaust kit. The kit would require a tip with a 4" inlet diameter to over the Diamond Eye's outlet tube.
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Answer provided by: Jason@Stage3 (3/14/2014)
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WARNING: Cancer and Reproductive Harm

This product can expose you to chemicals including those known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information, visit [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov).

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