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883 SPORTSTER® MUSCLE 1200 KIT
883’s are great bikes for performance builds – they are light, plentiful, inexpensive and easy to add in some Muscle!  Zipper’s Muscle 1200 package puts real Sport in your Sportster®, and puts to rest the ‘girl’s bike’ knock. The 883’s small-chamber head makes a great base for a hot rod build. After Zipper’s CNC porting, we install new guides and add lightweight, larger (1.725” intake, 1.485” exhaust) 7mm valves with high lift conical springs. Forged 3.5” pistons bring the displacement to 1200cc, and along with Red Shift 575 cams, horsepower is increased by 116% and torque by 87% – HUGE gains! Also included are Pro-Taper pushrods, telescoping pushrod covers (your choice of chrome or black finish) and gaskets needed for assembly. Leave those 883 stickers on the gas tank and have lots of fun hurting egos!

Note regarding late 2009-up 883 cylinders: Since the 883 was introduced in 1986, H-D® used a thick iron insert in the casting that allowed the 3” bore 883 cylinder to be safely bored to 3.5” for 1200cc displacement. Mid-year 2009, this changed. Less cast iron was used, and the cylinders can no longer be bored to 1200 (see cutaway photo). If you can see aluminum on the outside of the cylinder spigot (arrow), your cylinders can not be bored to 1200 due to the step circled in red. We try to keep used, earlier versions in stock that we can use for these applications, but this is subject to availability and finish. Contact our sales department for availability. An exact color may not be available and you may need to paint to match your engine. H-D® sells color-matching spray paint you can use for this. We do not recommend powder coating as the heat required to cure the PC will alter the precision-bored finish of the cylinders.

*#517-916 Includes reconditioned ’04-‘E09 cylinders, see above note

No Cost Options – Chrome or Black Pushrod Covers

This kit uses your factory head & cylinder* cores sent in for modification

***To ensure you enjoy a premium experience with a Zipper’s Engine Kit, Please fill out a Job Order Sheet prior to completing an order on the website.
Click here for Zipper’s Job Order Sheet

 

Not legal for sale or use in California on any pollution controlled motor vehicle.
Not legal for sale or use on any EPA pollution controlled motor vehicle.

Weight 63 lbs

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