129" Power Package Engine Performance Kit

129" Power Package Engine Performance Kit

Big bore bolt-on kit increases 107" M8 to 129" with no case machining required

Big bore 4.320" cylinder with 11.0:1 forged pistons

S&S oil pump/cam plate

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 pushrod tubes

S&S premium tappets

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

S&S valve springs; work with cams up to 0.605" lift

High performance conical single wire spring design

HPT496 cam designed for big bore applications

MLS (multi-layered steel) head gasket

Includes 129 cam cover badge

Made in the USA

Retains stock engine height.

Works with stock crankcases.

Works with the stock and S&S roller rocker arms.

Original engine serial numbers are retained.

Compatible with the stock valve springs, both first generation (round port) and second generation (oval port).