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from 158 reviews
Incredible sound

Sounds amazing. Installation is effortless. I like that it comes with a db killer for racetracks with noise regulation.

David Molina
M4 Exhaust Full System Black GP19 with canister ZX6R ZX6 2009 - 2025 KA6982-GP19
M4 Exhaust Full System Black GP19 with canister ZX6R ZX6 2009 - 2025 KA6982-GP19
2024 Yamaha MT-09 M4 Exhaust

I ordered a black M4 Exhaust. Huge improvement over stock and sounds awesome. Bill was great to talk to and quick to reply when called or emailed. Thank you

Jeremy Crouch
M4 Exhaust All Black Full System MT-09/SXR900 2021 - 2023 YA6932
M4 Exhaust All Black Full System MT-09/SXR900 2021 - 2023 YA6932
24 Z900 M4 Headers

Purchased from Bills and everything went great, Bill emailed me and a bunch of others to give us an update about when M4 would most likely ship out products and it was spot on. The exhaust fits great had a little trouble pairing it with an SC CRT Exhaust but that was a matching game and was nobodies fault. Overall great experience will do business again whenever I need more parts!

Hunter L.
M4 Exhaust Universal Header Kit 2017-2024 Z900 KA9000
M4 Exhaust Universal Header Kit 2017-2024 Z900 KA9000
Vandemon for Kawasaki H2 Carbon

I just finished installing it!!!👍👍👍
it completely changes the look of the H2 Carbon!!!
I'm going to start the bike in May and I'll send you the video!!!😃😃

Pierre Vallerand
VANDEMON Polished Titanium Exhaust System Ninja H2 & H2R 2015-24 KAWAH2TICSPOLEXHD
VANDEMON Polished Titanium Exhaust System Ninja H2 & H2R 2015-24 KAWAH2TICSPOLEXHD
Excellent Product

I was looking for this exhaust for a long time and finally found it at bills exhaust. The exhaust sounds good! Bills exhaust did a great job from the time I ordered it until I received. Highly recommended.

Tayseer Zaid
LEOVINCE LV Corsa Muffler - Black Edition KAWASAKI NINJA 400/500 2018 - 2025 15400BU 1811-4303
LEOVINCE LV Corsa Muffler - Black Edition KAWASAKI NINJA 400/500 2018 - 2025 15400BU 1811-4303
Excellent !!!! Exhaust !!!

First of I want to thank Bill himself for the excellent customer service and the shipping was quick. I love this M4 Dual Slip on Exhaust for my Hayabusa they definitely sound amazing and easy to install. I definitely will be buying all my products I can get from Bill for sure and definitely my to go to place to buy parts.

Michael D.
M4 Exhaust Dual Carbon Tech 1 Slip Ons 2021 - 2024 Hayabusa SU8324
M4 Exhaust Dual Carbon Tech 1 Slip Ons 2021 - 2024 Hayabusa SU8324
West Texas Heat!

I live out in West Texas halfway between Dallas and El Paso it gets hot out here.Oil works great good oil used it for years!

Jackie Williams
DRAG SPECIALTIES OIL Engine Oil - 25W-60 - 1 U.S. quart 198920
DRAG SPECIALTIES OIL Engine Oil - 25W-60 - 1 U.S. quart 198920
Excellent product

I needed to upgrade my stock fender and didn’t want to cut wires and this product was easy to install and you use the factory license plate light without cutting wires. The installation was very easy to me. The customer service is great and also the shipping was very fast which I was impressed and definitely ordering all my parts from Bills Exhaust.

Michael D.
T-rex racing suzuki hayabusa fender eliminator 2021- 2024
T-rex racing suzuki hayabusa fender eliminator 2021- 2024
Empire slip on

Put this on my can am outlander 850 xmr sounds amazing deep tone love it!

Zach Thede
Empire Industries Slip On Exhaust for 2012+ CAN-AM Outlander EMP-OUT-SLP
Empire Industries Slip On Exhaust for 2012+ CAN-AM Outlander EMP-OUT-SLP
Vandemon 4-2-4 system for z900rs

Great system. Unfortunately there are no instructions whatsoever. I assumed that a clip went between the left passenger foot bracket and ended up breaking a $100 foot bracket on my motorcycle. Couldn’t believe it!!! How hard would have it been to just put a simple drawing in with the exhaust system to at least picture how it needed to be assembled. Hopefully JB Weld will glue this back together. :-(
On a brighter note, BILL’S EXHAUST STORE is absolutely awesome!!! Super customer service and Bill was really nice and kept me updated on my order the entire time. Highly recommend!!! Thank you Bill !

Marc Upchurch
Vandemon Retro Stainless Steel Exhaust System Z900RS Cafe Racer 2018-24 KAWAZ900RS424SSEXHA
Vandemon Retro Stainless Steel Exhaust System Z900RS Cafe Racer 2018-24 KAWAZ900RS424SSEXHA
Awesome Grips

I bought these for my 2022 iron 883, they look and feel great. Couldn’t be happier

Colton Cofel
AVON Grips - Diamond Contour - Black DIA-65-ANO
AVON Grips - Diamond Contour - Black DIA-65-ANO
Excellent experience

Quick and timely delivery. 🏍️
The windscreen installed without issue.

Anthony Williams
Zero Gravity Windscreen - Dark Smoke 20-554-19
Zero Gravity Windscreen - Dark Smoke 20-554-19
BUY HERE!!!

Excellent service!!!

steven Diefenbacher
M4 Exhaust Tech 1 Carbon Fiber Slip On 2017-2024 GSXR1000 SU9144
M4 Exhaust Tech 1 Carbon Fiber Slip On 2017-2024 GSXR1000 SU9144
Pro Circuit T6

Love the sound of the new pipe and how crisp the throttle is.

John Blankenship II
PRO CIRCUIT T-6 Exhaust System - Stainless Steel KX 450 2024 0122445G 1820-2042
PRO CIRCUIT T-6 Exhaust System - Stainless Steel KX 450 2024 0122445G 1820-2042
Great service and product exactly what I ordered

Bill was awesome. He helped me be certain the part I was ordering was what I wanted. Kept me up to date on everything. Seriously, a great choice on my end. Hopefully I don’t need to replace another muffler, but if I do, I’m coming back.

Jason Bruegemann
AKRAPOVIC Replacement Muffler M-AP01503C 1861-1735
AKRAPOVIC Replacement Muffler M-AP01503C 1861-1735
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