I would like to intorduce the Aze Performance Muffler Deletes for your 2021 WRX/STI 
The Aze Muffler Deletes are fabricated for that smooth yet aggressive sound, a perfect fit, with a customized look and with a lifetime warranty.
Aze Performance muffler deletes include OEM hanger locations, gasket hardware kits for an easy DIY installation.
Being larger of diameter than most muffler deletes at 2.5 inches, the Aze Performance muffler deletes sound just is perfect in every situation. Loud enough when you want it, but also perfectly quiet for your calm drives and roadtrips.
The deletes are fabricated in Canada by utilizing local companies for their 304 stainless steel piping and mandrel bends, then they are TIG welding by hand with laser cut flanges and sturdy3/8 inch stainless steel hangers . This is all done In order to allow the exhaust gases to flow freely out of your choice of 3.5 inch Vibrant tips with a perfect fit in relation to the bumper.
 
Loose the weight of the stock mufflers, add some deeper sounds, some customized looks and a perfect fit with the The Aze Performance muffler deletes.
 
-Made in Canada
-304 stainless steel construction
-Mandrel bends
-Hand TIG welded
-Muffler deletes come with all bolts and gaskets for an easy DIY install
-Factory mounting locations
-Muffler delete are large 2.5 inch piping
-Customizable tip choice
-Lifetime Warranty
-A $35 shipping fee will apply
 
Decibels test on a 2015 wrx:
Cold start (2000rpm): 87db
High Iddle (1500rpm): 72db
Idle (800rpm): 64db