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Zipper's Muscle 107" Kit for 2007-Up Big Twin Models Double click on above image to view full picture

Zipper's Muscle 107" Kit for 2007-Up Big Twin Models

From: $3,449.00

To: $13,888.00

Price as configured: $0.00

Overview

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!

In compliance with ARB emissions laws, this product is not sold or shipped to California.

Price as configured: $0.00

Details

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.

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Customer Reviews

2 Item(s)

All smiles! Review by Alan W
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I'm the owner of an 09 streetglide and frankly the power I was making with an after market exhaust & intake was not all that exciting . Plus I was getting sick of being outspent by some buddies who don't bat an eye at spending 57k on a new bike with a 120 R installed. I've known about zippers for years and known about their good reputation but what sold me is how many local shops use their components and kits. So I opted for the 107 muscle kit and decided that because zippers was close enough to me to take it there and have them do the install. When I got it back I was completely blown away, I now giggle even when I'm just talking about my bike I'm smiling right now.it is a total beast it has no problem running with my buddies with their 120 r motors( and due to the fact that I don't trust dealers who tune i'm pretty sure I can beat these guys) I was waiting till I got 500 miles on the motor to post my review and I can't say enough good things the staff was completely professional and it is a relief to bring your bike to someone Who truly seems to appreciate your business.
Nice touches 1 - got everything they took off my bike in a box along with the detailed report of everything they did
2-they called and kept me updated through the whole process
3 - they gave me a tour of the entire factory and showed me were all these mad scientists work( very cool place)
I know that this sounds a little too positive but I swear I'm not being paid to say this I'm just that happy with the service I got from them .My bike is absolutely screaming and so much more fun to ride . My advice to anyone who's Reading this is don't waste any time or money on a dealer take your bike to zippers and the mad scientists at the giggle factory Will dial your machine in like they did mine so you can run circles around the sheep who heap money at the dealers
Looking at my dyno sheet 122hp&123 torque( I'm smiling right now ) thanks to everybody there
(Posted on 5/3/2016)
Wow Factor of 10! Review by Sbmike
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My 2009 Street Glide already had the Muscle 103" in it when the folks at Zipper's Performance suggested doing the 107". I wasn't expecting a huge difference, but I couldn't have been more surprised at the very noticeable improvement it made in the bike. I was warned to be careful about the responsiveness at the low end (as in just letting out the clutch) and I'm glad they warned me. The power difference was so great that had I let the clutch out as I normally did with the old configuration, I would have dropped the bike turning out of Zipper's parking lot! The other thing that stuck in my mind in terms of the difference in power was that when I got out on the highway, I eased into the throttle and went to shift into 6th gear only to find out I was already in 6th! That's how much power it was still pulling. If you are going from a stock motor to the 107, be very, very careful and hang on for dear life! ha ha. Luckily, I have dyno results from when my Street Glide was stock and the way it is now. It is now putting out 76% more horsepower and 56% more torque with a torque graph that looks more square than curved. I can't say enough good things about this setup! (Posted on 6/8/2015)

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Additional Information

Model Dyna®, Softail®, Touring®
Engine Type Big Twin®, Twin Cam®
Fuel / Air EFI
Emissions Compliant No
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