I got this for my new 2018 Ninja 400 KRT. The look and sound is so much better than the stock exhaust. Install was super easy, I followed Brian's video and it was super simple. Customer service is second to none with STG! When it comes to bikes and cars I have always said you get what you pay for. I don't buy cheap parts, M4 is not cheap but it is amazing quality! I couldn't be happier with this slip-on, it is one of the best sounding and best looking on the market right not for the 400.