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Your cart is empty.With a straight-through design for maximum flow and power, Thrush Glasspack mufflers feature exclusive Continuous Roving Fiberglass technology that absorbs unwanted resonance while maintaining a powerful tone.
Sebastian Segovia
Reviewed in the United States on February 2, 2025
Sounds good 💯
26 year old dude
Reviewed in the United States on August 27, 2024
Bought for my Chevy 350 small block, definitely quieter than straight pipe for sure. Nice clean crisp sound no raspiness, fit perfectly to what the measurements were. The red coating is very thick and seems like it’ll last awhile
matt p
Reviewed in the United States on August 14, 2024
Gives just enough sound to drown out the noisy engine on my hoopty. Fit good. Paint is powder coat type and won't hold up to the heat.
Don Edwards
Reviewed in Canada on June 27, 2024
these mufflers fit nicely in my 4" side pipes, and gave the car a deep tone and was quite a bit quieter that what I had. nice product
Esdras Montoya
Reviewed in Mexico on February 19, 2024
Esperaba un sonido mucho más exagerado cerca a traer tuberÃa directa pero son bastante callados, al acelerar es cuando realmente suenan, en relenti el sonido es bastante callado y suena hasta stock están genial para escuchar música cómodamente pero que ruja cuando lo acelerasUPDATE: Corté la tuberÃa hasta donde termina el resonador (previamente tenia tuberÃa hasta atrás del carro) es un sonido bastante bajo siento yo para ser un glass pack pero curiosamente si hay bastante drone o ruido dentro de la cabina como el que habrÃa con un mofle o resonador mucho mas ruidoso, igualmente dirÃa que esta bien por el precio pero si buscas algo ruidoso, este no es el indicado, es un glass pack cómodo para un auto del diario solamente, ni tanto ruido ni poco
Kaden Lewis
Reviewed in the United States on December 13, 2024
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Old Bear
Reviewed in Canada on April 23, 2024
I installed this on my 1981 Chev square body as the original (or one that was on it) muffler was broken. This one fit in with some modifications to the tailpipe. Sounds great and reminds me of my old truck and car from the 90s. Nice tone at idle and a great snap-rip when you're into the throttle.
Don in Arkansas
Reviewed in the United States on September 15, 2023
Bought to replace the improperly installed Flowmaster on my wife's 6cyl Ford Ranger. Replaced it with this and a standard design exhaust pipe, and while it still has the deep tone, it is not as obnoxious driving around. This lowered the volume a few DB and by adding back the tailpipe, moved that sound to the back of the truck. 95% of the flow of an open header and only 80% of the volume (I'm making those numbers up, but that's what my ears are telling me, so I'll just keep believing it.)NOTE: here is the secret to a great tone boys and girls - the longer the better! I purposely bought the longest glasspack that would fit in the system. The longer the pack, the lower the note. Look at musical instruments - the longer the pipe, the lower the note. A glass pack has the same amount of restriction, regardless of length - diameter and bends are restrictions.YMMV
Dean Atsun
Reviewed in the United States on October 19, 2023
Bought this to take the place of a factory resonator which rusted out and started to leak. This fit perfectly in its place. The tone of the exhaust is deeper, with a slight increase in noise over stock, however I still have the oem muffler in place. The Thrush muffler cut out the rasp that I was getting when I had a straight pipe in as a temp fix. This is much better. Hoping the packing will last for several years. Note that your results may vary, a shorter glasspack will be louder, and have a raspier tone than a longer one.
GREG WELCH
Reviewed in the United States on June 26, 2022
This glasspack is the same type I used as a teenager with limited funds. I'm now 59 and can afford what I want but I remembered the sound the Thrush glasspacks gave me and figured why not. It was super easy to install and I love the sound. Only thing I didn't receive was the Thrush bird sticker, ( envelope was empty ). Great product with a great price.
ccarms
Reviewed in the United States on January 18, 2022
This muffler is definitely built better than the Thrush glass packs I used 40 some years ago, with all welded seams instead of crimped it also is way quieter than they used to be. I guess that isn't necessarily a bad thing just different than what I expected based on my old experiences with Thrush. We'll see how long it lasts given that it was put on my jeep truck that sees a lot of mud and water.
majid
Reviewed in Saudi Arabia on March 27, 2021
To loud!!Dont buy
Cliente de
Reviewed in Mexico on July 2, 2019
Excelente
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