128" Power Kit for M8 114"/117" Oil-Cooled - Power PK CHN BKG

Manufactured in the USA
Big Bore Kit
Bolt-on big-bore kit increases 114"/117" with 4-1/2" M-Eight stroke to 128" without machining the crankcase
4-1/4" bore cylinders with 11:1 forged pistons
Oil pump/cam plate
S&S oil pump/cam plate with blue anodised finish
Removable service plugs
Independent intake sections for the crankcase and camshaft housing
Debris mesh in both air intake ports
Magnet in the cam cover to prevent debris from entering the oil pump
Greater oil flow capacity in both supply and return
Adjustable pressure relief valve, adjustable with the unit installed on the engine
Pushrods
Quikee rods with chrome tubes
Tappets
Premium S&S tappets
Tappet Cuffs
S&S anodised hard black-coated tappet cuffs, manufactured from billet aluminium
Improves stability of the studs in high lift and high rpm situations
Cam
S&S 550 cams designed for big bore applications
Valve springs
S&S compatible valve springs for cams with up to .605" lift
High-performance single-wire conical spring design
Includes all necessary seals, bearings and fixings for direct installation
Not recommended for Tri-Glide or other three-wheeled models, including conversions, due to these vehicles' tendency to operate at low revs.



Specifications


Brand
S&S CYCLE


Supplier reference
310-1109B


Engine capacity
128"


Colour/finish
Prominent fluting, Black Granite


Cylinder Dimensions
4,250"


Style
Big Bore


Stroke length
4,500"


Model
Power Package


Product name
Performance Kit


Compression ratio
11,1:1


Cooling system
Oil-cooled


Type
Engine


Distribution type
Chain


Units
Kit