🏍️ M4 14-17 Yamaha FZ-09 Standard Slip-On Exhaust: Enhance Performance with Carbon Fiber Construction Review

Apparently this is a necessity. My husband put it in the basket, I took it off. He put it back. I've removed it. Needless to say, he's now on his bike and, being cold, he's only accelerating to listen to his full glory. Neighbors are ambivalent.

I love this exhaust! It sounds amazing and was very easy to install. Be sure to clean the cut and apply a generous amount of Ultra Copper to the clip. No leaks and the sound is as new as after 200+ miles. Stop arguing about whether or not to shorten the exhaust, it's easier than you think.

Love it. I cut it off before welding, not after, so I didn't have to sand and there were no leaks. I installed gravesmog block plates to remove the AIS so there are no popping noises. I also contacted the m4 and they said it doesn't need tuning and it won't hurt it but it will benefit in terms of performance. So I'll leave it alone, this bike is strong enough anyway so I don't think I need a few extra ponies for $200 or more.

This m4 exhaust sounds and looks great! The packaging was very good as it was double boxed and fully bubble wrapped. Installation was easy but took a long time as I used a hacksaw to cut the pipe. It's definitely faster with a cutting disc. The exhaust fits perfectly. Everything installed, started and checked for leaks. I found there was a little leaking where the clamp attaches to the head tube. I used a large amount of high temp silicone as the instructions say. So I removed the complete…

A must have if you are familiar with basic tools. Installation will take some time as you will need to cut the existing exhaust pipe and grind the weld. If you don't have the right tools, this becomes much more difficult. But if you're willing to put in some work, it's definitely worth it. The sound is great and you have 2 different sound options with the included DB killer. The bike has a little more torque (not that the fz09 needs more torque), save some money and buy this exhaust! I am not…

Great product. Received, very well packaged. It actually took a while to fully unpack. I've researched a lot of exhaust systems for the FZ-09, but I didn't want to pay for a complete system. I've watched many videos of him to hear how he sounds, but nothing compares to how he sounds live. Very happy with the results. The instructions were in color and accurately described the installation. Some notes. You will need some high temperature silicone for installation. It's not included in the kit…

Great value for money exhaust. Very loud. Installation is very simple, contrary to the instructions (cut and grind the weld), just cut just before the weld. To hell with all that grinding. This takes too long and only gives you eight inches of extra pipe, which is totally unnecessary. It's very loud but not overly intrusive. It's annoying at low speeds, but above 70 km/h the wind noise predominates and is no longer audible. However, I always wear ear plugs after a 10 minute ride so it's not a…

Delivery: One word, fast! I ordered it Wednesday afternoon and received it Friday afternoon. Packaging: The exhaust was well packed with several layers of bubble wrap. It also comes with clear instructions with color images for reference. The M4 exhaust was in perfect condition. Installation: Installation took about an hour. After you have cut your stock exhaust you will need to gradually sand down the area where the new pipe will run until the M4 pipe is slippery. I have Permatex 81878 Ultra…