Press Release: New from Zipper’s is the Muscle 107 kit for 2007-up Twin Cam engines. Zipper’s has carefully developed this package with optimized compression, porting, camshaft design and inlet flow, combined with our best-inclass finish work, extensive dyno and ride testing to deliver a very balanced engine kit that will not disappoint.
The Muscle 107 delivers fantastic power curves with both torque and horsepower reaching north of 120. This power is very smooth and broad, with torque over 100 ft/lbs from below 3,000 RPM’s to above 6,000! Kit includes CNC porting with premium components on your heads, fitting forged, 3.937” bore domed pistons to your cylinders, Red Shift cams and dual piston cam chain tensioners, Axtell oil bypass valve, Pro-Taper pushrods, quality gaskets, high flow injectors and MaxFlow air cleaner assembly with a pre-programmed ThunderMax EFI controller. TBW models require separate purchase of H-D Screamin’ Eagle 58mm throttle body (not included); everything else you need is supplied in a single part number.
Part Number: #517-347B (Black) & #517-347S (Silver)
Zipper’s Performance Products