S&S CYCLE Crankcase - Black 310-0856

Building a high-performance Harley-Davidson engine demands a foundation that can handle extreme compression, aggressive cams, and extended stroke lengths without compromise. The S&S CYCLE Crankcase combines stock aesthetics with aircraft-grade durability, delivering reinforced wall sections and premium bearing components engineered for forced induction and high-RPM applications. Whether you're assembling a custom motor or replacing a worn T-series case, this billet-quality casting provides the structural integrity demanded by professional builders and serious enthusiasts.

• 356-T6 aircraft aluminum
• 4-1/8" bore capacity
• Stock appearance, reinforced design
• Thicker wall sections throughout
• Timken® sprocket shaft bearing
• Reinforced front motor mount
• Clearance: 4-3/16" strokes
• Clearance: .720" cam lift
• Tough powder coat finish
• Pinion and bearings included
• Cam bearings pre-installed
• Studs pre-installed
• Manufacturer's Statement of Origin
• U.S.A. manufactured
• Requires oil line kit (sold separately)
• Compatible: 310-0856 MPN