Tested with Zippers Thunder-Max. Results with other tuners may vary.
D&D’s New Concentric Flow Baffle System
The Bob Cat is the first D&D pipe to utilize our new Concentric Flow Baffle System technology. It delivers reduced noise, performance improvement and the enhanced tone of the Harley-rumble. The Bob Cat is the perfect aftermarket exhaust trifecta.
Part # 551-31 A – Black pipe and end cap with aluminum sleeve.
Part # 551-31 B – Black pipe and end cap with black sleeve.
Part # 551-31 C – Black pipe and end cap with carbon sleeve.
This is the footage from one of the many dyno runs conducted on the Bob Cat pipe while the system was fine tuned during design.
D&D’s Concentric Flow Baffle System will first appear on the XR1200 full system exhaust in March 2009 and will be available in all Harley models by the 3rd quarter 2009.
New XR 1200 Exhaust Pipe from D&D
The XR-1200 pipe delivers significant HP gains across the RPM range.
Provided by Biker Pros.