M8 2017-2024 Custom Factory Exhaust Head Pipe - Modified head pipe: Angry 2 into 1 merge collector, 2.5" Core to factory cross pipe outlet, stock O2 Sensor Bungs, or optional wide-band O2 sensor bosses (M18)
Our Angry Head-pipe is the proper way to utilize the already excellent Harley-Davidson Head pipe. We weld in a 304 SS merge collector where the previous "D"-shaped head pipes dropped into the cat box. These head pipes have been dyno-tested with our Angry slip-on mufflers, and have had excellent results. We mimic the older-school sound and performance of a 2-into-1 head pipe while reducing the sound and heat level on the right side of the motorcycle by keeping the factory cross pipe. Approximate gains of 10 HP and 10 ft lbs of torque on a stage 4 128 SE (see Dyno chart here) using the factory SE tuner and custom tuning. Expect more or less depending on your modifications. This head pipe also utilizes your stock heat shields. Price includes pick-up and return shipping from and to you.
