129" Power Package for M8

129" Power Package for M8

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

4.32" bore cylinders with 11.0:1 compression ratio 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

S&S premium tappets

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

S&S 550 cams are designed for big bore applications

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

High-performance conical single wire spring design

All necessary gaskets, bearings and hardware for bolt on installation included

Made in the USA

Not for any Trike models.