Twin Cam® CVO Sleeper 110 KitWake up your CVO 110 with our Sleeper 110 Kit!
The 255 cams the factory installed in the 110 have a narrow profile that limits horsepower. Adding a broader profile cam allows the engine to rev more freely but also lowers the dynamic compression ratio and can hurt low end torque. We studied the issue and found that our Red Shift 576 grind, coupled with a small bump in compression (10:1) should boost power across the board - and it did, quite nicely! The Sleeper 110 kit includes forged, +4.2cc pistons, Red Shift 576 cams and Dual-Piston tensioners, Pro-Taper pushrods and E-Z Adjust covers (your choice of chrome or black finish) and necessary gaskets. Result: 28% gain in HP, 17% in torque!CVO engines are known for oil delivery and lifter issues, so our 417-498 blueprinted cam chest upgrade is a highly recommended option. This kit uses your factory cylinder cores sent in for modification.
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.
Twin Cam® CVO Sport 110 KitZipper’s Sport 110 kit greatly improves the 110’s power all across the board. Like the Sleeper 110, cam timing and compression are both increased for impressive power gains. We chose the popular Red Shift 577 cams, a more aggressive grind that responds well to compression. After decking the gasket surface on your supplied cylinders, forged +10cc domed pistons (10.65:1) are precision-fitted to the cylinders using the latest Sunnen honing techniques. The kit also includes Red Shift Dual-Piston tensioners, Pro-Taper pushrods and E-Z Adjust covers (your choice of chrome or black finish), and all necessary gaskets. Result: 39% gain in HP, 17% in big, broad torque!CVO engines are known for oil delivery and lifter issues, so our 417-498 blueprinted cam chest upgrade is a highly recommended option.This kit uses your factory cylinder cores sent in for modification.
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.
Zipper's Twin Cam® CVO Muscle 110 KitDoes your CVO 110 seem to run flat after 4,500 RPM?
It’s true - the factory 110 engine is better at producing torque than HP. Zipper’s Muscle 110 kit starts producing more torque at 2,500, then just when the factory engine starts leveling out at 4,250, the Muscle 110 takes a deep breath and charges hard to 6,200 RPM - making an astonishing 40 HP more! Peak torque occurs at 5,100 RPM, 34 ft/lbs more that stock, contributing to the hard pull on felt in your arms. How do we do it? Zipper's Stage III CVO CNC porting, proprietary +10cc pistons and Red Shift 657 cams provide everything needed to produce the power. Valve springs and Red Shift Dual-Piston tensioners with Pro-Taper pushrods add stability and life to the unstable factory valve train.
Whether you ride in short hops or long trips, you’ll fall in love with your CVO again with the Muscle 110!CVO engines are known for lifter and oil system issues, so our blueprinted cam chest upgrade is highly recommended.This kit uses your factory head and cylinder cores sent in for modification.
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.
Zipper's Twin Cam® CVO Muscle 113 KitWhat could be better than our Muscle 110 kit?
Adding 3 magical cubic inches to it, of course! By adding .060” to the bore and 2cc’s to the pistons, a sweet spot was identified, and the Muscle 113 was born - with nearly 11 more HP and 9 more ft/lbs of torque. The Muscle 113 has a very similar power curve when compared to the Muscle 110, just more of it, everywhere. 50 more horsepower and 42 ft/lbs of torque than stock! Zipper's Stage III CVO CNC porting, proprietary +12cc pistons and Red Shift 657 cams provide everything needed to produce the power. Upgraded valve springs and Red Shift Dual-Piston tensioners with Pro-Taper pushrods add stability and life to the unstable factory valve train, up through 6,500 RPM. Big Power awaits the CVO owner with this powerful top end and cam kit! M8 owners will respect the Twin Cam® Muscle 113!CVO engines are known for lifter and oil delivery issues, so our 417-498 blueprinted cam chest upgrade is highly recommendedThis kit uses your factory head and cylinder cores sent in for modification.
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Click here for Zipper's Build Sheet/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.
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Raise the bar to the top level on your CVO Twin Cam®! Zipper’s CVO Muscle 124 engine kit improves the high-breathing CVO head with Zipper’s CNC porting and oversize valves, while our proprietary +7cc domed pistons raise compression to 10.75:1. A new 4-5/8” crankshaft adds a ¼” more stroke, while new stress-relieved cylinders add an 1/8” more to the bore. Our Red Shift 657 cams are perfectly matched with the heads and piston to provide big torque & HP across the entire RPM range. Red Shift Dual-Piston cam tensioners are included with Pro-Taper pushrods and EZ-Adjust covers for a stable valve train, with all the gaskets needed for assembly. Case boring required for 4-1/8” cylinders; Timken® bearing conversion and cam chest/oil system upgrade highly recommended to improve durability and reliability. Make your CVO run even faster than it looks!
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.
