2015-2023
2010-2014
2005-2009
1999-2004
1994-1998
1979-1993
Installation Time
(approx) 1 Hour
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
FREE 1 to 3-Day Delivery on Orders $119+ Details
Talk to a Mustang Sales Tech
1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
-
Add Details
- Change Vehicle
- Mustang Builds Gallery
Find Exhaust Accessories for your Mustang
Granatelli Motor Sports Manual Exhaust Cutout; 3-Inch Stainless Steel; Pair (Universal; Some Adaptation May Be Required)Find parts that fit my vehicle
Item 408478
Mustang Sales Tech
Verify parts fit & get product recommendations
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$0.00
3 Reviews
Our Price
$168.50
Ship to: Enter Zip
Please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
Choose options to add to cart.
Saved - View your saved items
We're sorry. We couldn't save this product at this time.
or use
Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Description
Improved Sound and Performance. Get the most out of your Mustang's engine by installing a pair of GMS Manual 3-inch Exhaust Cutouts. With its huge 3-inch tubes, these exhaust cutouts will allow for a better exhaust flow, which results in improved overall performance as well as a notable exhaust note. You can even control your Mustang's exhaust note with the help of block-off plates.
High-Quality Construction. These GMS Manual 3-inch Exhaust Cutouts are constructed from high-quality stainless steel for superior strength and durability. With this solid construction, these exhaust cutouts can endure extreme engine conditions without warping or cracking.
Simple weld-on Installation. These GMS Manual 3-inch Exhaust Cutouts can be installed with a simple weld-on process. You don’t need to drill any holes on your Mustang to properly install these exhaust cutouts.
Covered by a 90-Day Warranty. GMS covers these GMS Manual 3-inch Exhaust Cutouts with a 90-day warranty. For more information on coverage and exclusions, please check the manufacturer’s official site.
Application. These GMS Manual 3-inch Exhaust Cutouts will fit all Mustang models.
Granatelli Motor Sports 408478
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (2) Y Inserts
- (4) Band Clamps
- (2) Block-Off Plates
- Mounting Hardware
4.7
Customer Reviews (3)
Feb 4, 2021
Review shared from Granatelli Motor Sports Manual Exhaust Cutout; 2.50-Inch Stainless Steel; Pair (Universal; Some Adaptation May Be Required)
2012 V6 - IsraelR
Installation Time: Less than 1 Hour
Alright.
2012 3.7L mustang Great product to add onto your mustang, when you will hardly close your cutouts. For my situation I wanted this cutout to be open all the time. But for those rare long trips I don’t mind doing all that work to closes them. The only issue was my exhaust piping was 2.25 and the cutouts are 2.50. so if anything just keep that in mind when purchasing these for those V6 owners out there.
Fit 2/5
Quality 5/5
Bang For Your Buck 5/5
Dec 4, 2020
Review shared from Granatelli Motor Sports Manual Exhaust Cutout; 2.50-Inch Stainless Steel; Pair (Universal; Some Adaptation May Be Required)
2004 GT - Jgoesfast
Installation Time: Afternoon
Manual cutouts
Sound and quality is there, would recommend welding them on to prevent leaks later on. Nicer on the budget if you don’t plan on closing them very often! ( also don’t have to mess around with wiring ???? )
Fit 5/5
Quality 4/5
Bang For Your Buck 5/5
Jan 25, 2020
Review shared from Granatelli Motor Sports Manual Exhaust Cutout; 2.50-Inch Stainless Steel; Pair (Universal; Some Adaptation May Be Required)
2013 V6 - Sam
Installation Time: Less than 1 Hour
Amazing!!
It gives the option to have cutouts without the fuss of wiring. When going on a long trip, just use the block off plates for touring comfort
Fit & Finish 5/5
Loudness (Volume) 4/5
Exhaust Note 5/5
Bang For Your Buck 5/5
Reviews of Granatelli Motor Sports Exhaust products have an average rating of 4.9 out of 5
Mar 22, 2024
Review shared from Granatelli Motor Sports Electronic Exhaust Cutout System; 2.50-Inch Stainless Steel (Universal; Some Adaptation May Be Required)
2021 GT - BillGT
Moderate Difficulty
Quaility kit, took a little thinking to make it work stright off cat downpipes..
Jul 25, 2023
Review shared from Granatelli Motor Sports Electronic Exhaust Cutout Dual System; 2.50-Inch Aluminized Steel (Universal; Some Adaptation May Be Required)
2007 GT - Trautman
Sounds good
Really cool like the sound easy to install. And easy to operate.
Mar 31, 2023
Review shared from Granatelli Motor Sports Exhaust Cutout Adjustable Turn Down; 2.50-Inch (Universal; Some Adaptation May Be Required)
1990 GT - HOGabe
Great for adapting exhausts
I bought an exhaust for my 90 Gt and it did no fit due to the tips so I used these turndowns and it fit. Great save!!!
Feb 4, 2021
Review shared from Granatelli Motor Sports Manual Exhaust Cutout; 2.50-Inch Stainless Steel; Pair (Universal; Some Adaptation May Be Required)
2012 V6 - IsraelR
Alright.
2012 3.7L mustang Great product to add onto your mustang, when you will hardly close your cutouts. For my situation I wanted this cutout to be open all the time. But for those rare long trips I don’t mind doing all that work to closes them. The only issue was my exhaust piping was 2.25 and the cutouts are 2.50. so if anything just keep that in mind when purchasing these for those V6 owners out there.
Jan 6, 2021
Review shared from Granatelli Motor Sports Electronic Exhaust Cutout System; 2.50-Inch Stainless Steel (Universal; Some Adaptation May Be Required)
2014 V6 - widow
Question
Can you buy one pice at a time them buy the other pice and it be able to hook up together on the same switch
Dec 4, 2020
Review shared from Granatelli Motor Sports Manual Exhaust Cutout; 2.50-Inch Stainless Steel; Pair (Universal; Some Adaptation May Be Required)
2004 GT - Jgoesfast
Manual cutouts
Sound and quality is there, would recommend welding them on to prevent leaks later on. Nicer on the budget if you don’t plan on closing them very often! ( also don’t have to mess around with wiring ???? )
May 17, 2020
Review shared from Granatelli Motor Sports Electronic Exhaust Cutout System; 3-Inch Stainless Steel (Universal; Some Adaptation May Be Required)
2010 GT - Ashtonw22
N
Great service and always arrives on time and for a fairly cheep price
May 1, 2020
Review shared from Granatelli Motor Sports Electronic Exhaust Cutout System; 2.50-Inch Stainless Steel (Universal; Some Adaptation May Be Required)
2019 GT - MattH73
The perfect exhaust system!
After installation, I knew this was the exhaust system for me; I'm able to keep it closed for a subtle driving experience but can always open it up and have incredible sound.
Mar 6, 2020
Review shared from Granatelli Motor Sports Electronic Exhaust Cutout System; 2.50-Inch Stainless Steel (Universal; Some Adaptation May Be Required)
2010 GT - James
AMAZING
I was worried about them rattling, or the housing getting chewed over time etc. but MAN, 4 months and no problem. I went with these over other brands because my fathers buddy has them on his chevelle and they’ve been perfect for 4 years straight! So far no complaints, make sure you weld them, don’t use the brackets, those are prone to leak.
Jan 25, 2020
Review shared from Granatelli Motor Sports Manual Exhaust Cutout; 2.50-Inch Stainless Steel; Pair (Universal; Some Adaptation May Be Required)
2013 V6 - Sam
Amazing!!
It gives the option to have cutouts without the fuss of wiring. When going on a long trip, just use the block off plates for touring comfort
Questions & Answers
No questions about this product yet.
Ask the First Question
