Cobra Pro Chamber Headpipes For Harley Touring These head pipes are the definition of allowing your H-D Touring motorcycle to run more efficient, make more power, and minimize the heat produced versus the stock headpipes. Cobra has modified their famous PowerPort by enlarging it which allows a pulse chamber that increases exhaust scavenging to produce power that's expected. Features True Dual headpipes come with Cobra's limited Lifetime Warranty in addition to a host of other unique features One-piece full-length, 2-1/2 diameter black heat shields cover the pipes from the exhaust ports to your muffler bodies (sold separately) The heat shields are a larger diameter than most other offerings on the market and the single-piece shields (especially on the rear pipe) are singular in their design and effectiveness The added benefit is that the larger heatshields will deflect more engine heat away from the rider, making it noticeably cooler for the rider and passenger The pipes were also designed to deliver optimal torque and power while increasing the stock bike's ride-ability right in the sweet spot of the torque curve Accepts aftermarket mufflers only The system is equipped with oxygen sensor bungs so you can take advantage of your motorcycle's closed loop technology Note: Will not accept stock mufflers.