S&S Standard Bore Engine Cases

• Alternative to costly repairs when attempting to fix fatigued, broken, worn-out stock crankcases

• In spite of the stock appearance, these cases incorporate updated design features that improve overall engine strength and reliability

• S&S crankcases use Timken style sprocket shaft bearings 1956-99 Style and 1958 and later pinion bearings

• These cases will not accept stock 1957 and earlier flywheel assemblies

• Use 1936-69 Style oil pumps

• Includes primary scavenge port machining

• Machined for the 1965-69 alloy primary