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-in-class 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. Cable-throttle models require the sepapate purchase of H-D® Screamin’ Eagle® 58mm throttle body (# 27639-07B) and manifold (# 29667-07); TBW models require separate purchase of H-D® Screamin’ Eagle® 58mm throttle body # 27713-08 (not included); everything else you need is supplied in a single part number! 

This kit uses your factory head and cylinder cores sent in for modification, expect 1-2 weeks completion time. We keep exchange heads and cylinders in stock already modified for quicker turn-around; parts must be in nearly perfect cosmetic condition, expect the same from us. You can also purchase heads and cylinders outright (without supplying a core set). We will supply clean, reconditioned factory castings for your application – add part # 517-010 (cylinders) and 517-015 (heads) to your order.

All kits can be purchased whole or in any combination of desired components, please contact our sales department at 410-579-2828 for more details and pricing.

 

DOCUMENTS & DOWNLOADS

Zipper’s Muscle 107″ Kit for 2007-Up Big Twin Models 
Zipper’s Job Order Sheet

 

This product is not for sale or use on pollution controlled vehicles.

Weight 1 lbs
Emissions Compliant

Country of Origin

Engine Type

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Fuel / Air

Model

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