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Zipper’s Muscle 117 kit ‘99-‘06 Twin Cam® ‘A/B’ engines

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Take your 88” Twin Cam to 117” with Zipper’s Muscle 117 kit!  A new 4-3/8” stroke crankshaft replaces the original 4” crank; new stress-relieved 4-1/8” bore cylinders are precision fit with forged pistons set for 10.6:1 compression. Your heads receive Zipper’s Stage III CNC porting with new guides, oversize valves, performance springs and manual compression releases. Our Red Shift 577 cams provide big torque & HP gains across the entire RPM range. Also included are Pro-Taper pushrods and EZ-Adjust covers, with all gaskets needed for assembly. Highly recommended option: our # 417-495 blueprinted cam chest upgrade with our Red Shift Dual Piston hydraulic cam chain tensioners, blueprinted billet plate, HV oil pump, cam bearings and quality USA lifters for improved reliability and durability. Case boring required, Timken recommended.  Enjoy Big, Broad Power at every throttle position with the Muscle 117!

This kit uses your factory head cores sent in for modification. An exchange may be possible once your cores are cleaned, inspected and qualified for exchange.

 

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.

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

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Take your 88” Twin Cam to 117” with Zipper’s Muscle 117 kit!  A new 4-3/8” stroke crankshaft replaces the original 4” crank; new stress-relieved 4-1/8” bore cylinders are precision fit with forged pistons set for 10.6:1 compression. Your heads receive Zipper’s Stage III CNC porting with new guides, oversize valves, performance springs and manual compression releases. Our Red Shift 577 cams provide big torque & HP gains across the entire RPM range. Also included are Pro-Taper pushrods and EZ-Adjust covers, with all gaskets needed for assembly. Highly recommended option: our # 417-495 blueprinted cam chest upgrade with our Red Shift Dual Piston hydraulic cam chain tensioners, blueprinted billet plate, HV oil pump, cam bearings and quality USA lifters for improved reliability and durability. Case boring required, Timken recommended.  Enjoy Big, Broad Power at every throttle position with the Muscle 117!

This kit uses your factory head cores sent in for modification. An exchange may be possible once your cores are cleaned, inspected and qualified for exchange.

 

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.

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

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