If you ride a Kawasaki ZX6R, you already know it’s a serious machine built for performance and aggressive riding. But as great as it is out of the box, many owners quickly look for ways to personalize and enhance their bike—starting with the exhaust. One of the most popular and impactful upgrades is the M4 GP-19 slip-on.
This short, aggressive pipe not only changes the look of the ZX6R, but completely transforms its sound and feel. In this post, we’ll take a closer look at what makes the M4 GP-19 slip-on a top choice for ZX6R riders.
The Look: Compact and Aggressive
The M4 GP-19 features a MotoGP-inspired design, giving your ZX6R that track-ready appearance. It’s a short, slash-cut exhaust that sits neatly under the tail, replacing the bulky stock canister. Available in black ceramic-coated aluminum or carbon fiber, it adds a sleek, stealthy look to your bike. It’s a simple change that makes a big visual impact.
The Sound: Raw and Powerful
Let’s be real—sound is a big reason people upgrade exhausts, and the GP-19 does not disappoint. The stock ZX6R exhaust is quiet and muted, which doesn’t do the high-revving inline-four engine justice. The M4 GP-19 produces a deep, throaty growl at idle, with a raspy, aggressive tone at higher RPMs. It screams when you twist the throttle, and adds pops and crackles during deceleration—especially if you run it without the baffle.
Just be warned: it’s loud. If you live in an area with strict noise laws or ride through residential areas often, it might be too much for daily commuting without a baffle.
Performance Gains
While the M4 GP-19 is primarily a slip-on (not a full system), it still offers some performance benefits. You’ll notice:
- Reduced weight (it’s several pounds lighter than stock)
- Slightly improved throttle response
- Better airflow (especially when paired with a high-flow air filter or ECU flash)
Installation: Simple and Straightforward
One of the biggest perks of the M4 GP-19 is how easy it is to install. With just a few basic tools, you can bolt it on in about 30 to 45 minutes. There’s no need for cutting, welding, or tuning (though a tune will help maximize performance).
Ready to give your ZX6R the roar it deserves? The M4 GP-19 might just be your favorite mod yet.
Final Thoughts
The M4 GP-19 slip-on exhaust is one of the best bang-for-your-buck upgrades you can make to your ZX6R. It delivers killer sound, a lightweight design, race-bike looks, and improved throttle feel—all without breaking the bank or requiring major modifications.
If you want to turn heads and make your ZX6R sound as aggressive as it looks, the M4 GP-19 is a solid choice.
Reasons the ZX6R Outperforms the Yamaha R6 in Many Areas. Click here for more information.
