That is one sexy header pipe… (picture) (updated: Sept 16th 2023)

This is a 2:1 header for a Harbor Freight Predator 670.  I don’t know how much I’ll modify the engine, but if you follow along with posts and videos about Bar Hopper you will learn as I do.  It’s my understanding that I’ll need to reject the HF stock carburetor immediately after installing (or during the process) as the carb is jetted unevenly due to the uneven back exhaust pressure on the cylinders with the stock exhaust.  This header should provide uniform back pressure and flow more easily than the stock muffler.

Updated September 16th 2023:  The rest of the Mud Skipper kit has just arrived.