S&S Cycle Power Pack — 4.375" Stroke — Water Cooled — Black w/Highlights — M8

• 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
• Not for any Trike models.
• Intake/rocker cover gaskets not included.

Bore Size

4.250"

Color/Finish

Highlighted Fins, Black

Units

Kit

Features

Includes Cam Chain Tensioner, Quickee Pushrods w/Chrome Covers

Cam Drive Type

Chain

Type

Big Bore

Cooling System

Water Cooled

Displacement

124"

Stroke Length

4.375"

Compression Ratio

11.1:1

Model

Power Package

Riding Style

Street

Shipping weight

45.5 lb

Package size

27.5 × 12.3 × 20.5 in

Country of origin

USA

Salto part #

0904-0146

S&S Cycle part #

310-1050C

In stock at a distributor warehouse. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is re-checked with the warehouse before your card is charged.

California: this part can’t ship to a California address.

Is it in stock?

Yes — the distributor shows it on a shelf at a regional warehouse right now. We check again the moment you order, before anything is charged.

How fast will it get to me?

Usually 2–4 business days by ground.

Will it fit my machine?

The distributor lists it for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.

Is this genuine S&S Cycle?

Yes. It ships new from the same distributors the big online stores buy from — S&S Cycle part #310-1050C.