You've been waiting, and it's now here! Introducing our Muffler Slip-On for the 2023-2026 Kawasaki ZX-4R/ZX-4RR. This highly anticipated bike is turning heads and making the rounds. And, with a huge announcement from multiple race series that these will now be included, the need for an aftermarket system is even greater! Designed in-house and tested on our in-house Dyno and at the race track, the slip-on made pretty impressive numbers* on the dyno (check it out under the Dyno Charts tab). The stock muffler weighs 4.8 lbs. versus our Carbon muffler weighs 2.4 lbs.! Also available in a Megaphone version here. *Both the stock dyno run AND the Hindle slip-on run are with a flashed ECU in the Dyno Chart graph