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PowerPak Oil Cool 4.25""Bore4.375""Stroke M8 Blk no Highlight

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In stock

SKU

09040137

Special Price €4,039.00 Regular Price €4,616.00

Dispatching between 21.04.2026 and 22.04.2026

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24 months

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Details

Bolt-on kit
With updated fins
No case machining required
Forged pistons
Made in the USA
Includes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 camshaft, valve springs
Oil Pump/Cam Plate:
Precision machined from billet aluminum
Passage plugs removable for servicing
Independent scavenge sections for flywheel cavity and camchest
Debris screens in both scavenge pickups
Magnet in camchest to help to stop debris from entering oil pump
44% flow increase on supply side and 58% flow increase on scavenge side
Pressure relief valve is adjustable with unit installed in engine
Pushrods:
Quickee pushrods
Tappets:
Hand assembled to exacting tolerances
Reduced valve train noise from start up to shut down
Close tolerances for low leak down rates
Tappet Cuffs:
Hard anodized black coating
Billet aluminum construction
Tappet stability in high lift and high rpm sitiuations
Camshaft:
S&S 550 camshaft - designed for big bore applications
Valve Springs:
Works well with camshafts up to 0.605" lift
High performance conical single wire spring
Includes top collars, keepers, valve seals and bottom collars

Brand

S&S CYCLE

Vendor Part Number

310-1052C

Bore Size

4,250"

Cam Drive Type

Chain

Color/Finish

Black, Non-Highlighted Fins

Compression Ratio

11,1:1

Cooling System

Oil Cooled

Displacement

124"

Features

Quickee Pushrods w/Chrome Covers, Includes Cam Chain Tensioner

Model

Power Package

Product Name

Performance Kit

Stroke Length

4,375"

Type

Big Bore

Units

Kit

More Information

More Information
Weight	19.890000
Height	491
Width	298
Brand	S+S CYCLE
Lenght	683
Availability	In the central warehouse
Supplier reference	310-1052C
Outlet	No
Ships in	1 business day
Campains	Hinnagarantii