SPC Big Bore 4.5 Stainless 2 into 1 for Twin Cam Touring

4.5” High Flow Performance Cone Muffler with a Stepped Baffle from 2 1/4"- 2 1/2" Increases bottom to mid range torque and horsepower on all motors. Tuned properly it can accommodate 88" to 143" engines.  065 Stainless Steel Headers stepped from 1 ¾” TO 1 7/8” TO 2” at the collector Hand TIG Welded from Top to Bottom Machined Stainless Steel Header Collars 18MM O2 BUNGS with 12MM adapters, allows for stock or Autotune O2 Sensors  Complete hardware kit with everything you need to mount it up 07-08 Baggers require 02 Sensor Extensions This pipe is special order please contact us for delivery estimates