The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering - moving the muffler closer to the motor to centralize mass.This Part Fits: Year Make Model Submodel 2002-2020 Kawasaki KLX110 Base 2003-2005 Suzuki DR-Z110 Base