Features

• Made in the USA

Big Bore Kit

• Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining required
• 4-1/4" bore cylinders with 11:1 forged pistons

Oil Pump/Cam Plate

• S&S oil pump/cam plate with blue anodized finish
• Passage plugs are removable for servicing
• Independent scavenge sections for flywheel cavity and camchest
• Debris screen in both scavenge pickups
• Magnet in camchest to help prevent debris from entering the oil pump
• Increased oil flow capacity on both the oil feed and scavenge side
• Adjustable pressure relief valve can be adjusted with the unit installed in the engine

Pushrods

• Quikee pushrods with chrome pushrod tubes

Tappets

• S&S premium tappets

Tappet Cuffs

• S&S hard-anodized, black coated tappet cuffs are billet aluminum construction
• Improve tappet stability in high-lift, high-rpm situations

Cam

• S&S 550 cams designed for big bore applications

Valve Springs

• S&S valve springs work with cams up to .605" lift
• High-performance conical single-wire spring design
• All necessary gaskets, bearings and hardware for bolt-on installation is included

• Not recommended for Tri-Glide or other three wheel models including conversion due to lugging nature of these bikes.

CALIFORNIA WARNING: 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.

Specs

Product Name	Performance Kit
Type	Engine
Style	Big Bore
Model	Power Package
Color/Finish	Non-Highlighted Fins / Wrinkle Black
Stroke Length	4.50"
Displacement	128"
Bore Size	4.250"
Compression Ratio	11.1:1
Cam Drive Type	Chain
Cooling System	Oil Cooled
Units	Kit
Riding Style	Street