Excellent workmanship inside and out broad power design really shows up on the dyno. The D&D Fat Cat 2-into-1 exhaust system for 2009 to 2016 Harley Davidson Twin Cam equipped Touring models is an excellent choice for engines with performance modifications from stock to plus-25% displacement, delivering a torque curve that is high and wide, with a strong top-end pull. D&D Fat Cat 2-into-1 Exhaust System for '09-16 Harley Davidson Touring Models and Trike (with adapter)- Back Cut or Slant Cut (Select Chrome or Black)