ZIPPERS PERFORMANCE BIG BORE KITS HARLEY TWIN CAMS 07-17 HARLEY FXR SEATS Has 18mm O2 ports in

Has 18mm O2 ports in pipe

Straight can mufflers with a specially designed baffle that is acoustically tuned to deliver a unique exhaust sound while providing maximum performance

This kit removes the left side muffler and header and routes spent gases through a single 4" Grand National or 4

PERFORMANCE MACHINE PRO AM GOLD OPS WHEEL PACKAGE

no matter what abuse you throw its way

ZIPPERS PERFORMANCE BIG BORE KITS HARLEY TWIN CAMS 07-17 HARLEY FXR SEATS Has 18mm O2 ports inZIPPERS PERFORMANCE BIG BORE KITS HARLEY TWIN CAMS 07 17 SELECT IN OPTIONS KITS FOR 2007 UP TWIN CAM ENGINES Factory 2007 up Twin Cam engines are equipped with 4 3 8 stroke crankshafts. The factory cylinder bore size of 3 3 4 yields the 96 displacement, which was gradually increased to 3 7 8 starting in 2010 for 103 displacement. We can turn your 96 engine into either a 103 or a 107, and your 103 into a 107 simply by resizing the factory cylinders.