128" Power Package Engine Performance Kit

128" Power Package Engine Performance Kit

Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight with no case machining required

4-1/4" bore cylinders with 11:1 forged pistons

S&S oil pump/cam plate with blue anodized finish

Passage plugs are removable for servicing

Independent scavenge sections for flywheel cavity and cam chest

Debris screen in both scavenge pickups

Magnet in cam chest 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

Quickee pushrods with chrome pushrod tubes

S&S premium tappets

S&S hard-anodized, black coated tappet cuffs are billet aluminum construction

Improve tappet stability in high-lift, high-rpm situations

S&S 550 cams designed for big bore applications

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

Made in the U.S.A.