S&S Cycle Twin Cam Engine Case - 4 1/8in Bore with Stock Stud Pattern - Silver - 106-4057

Item # : 209009

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List : $2,557.10


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  • Manufacturer: S and S Cycle


S&S Cycle Twin Cam Engine Case - 4 1/8in Bore with Stock Stud Pattern - Silver Powder-Coat

  • Replacement Twin Cam A engine cases for stock H-D chassis only (carb and EFI)
  • Feature greater overall strength than stock crankcases
  • Strong, dependable Timken-style sprocket shaft bearings
  • Clearanced for strokes up to and including 5in
  • All passages between the crankcase cam support plate are O-ring sealed
  • Compatible with most stock components
  • Cam chest has clearance for up to .675in lift cams
  • Include S&S crankcase breather reed valve designed to eliminate oil carry-over and oil scavenging problems
  • Rear motor mount bolts directly to the stock transmission; fully compatible with the stock primary, charging system, and other stock components
  • Available with stock bore (ideal for replacement applications), 4in bore (ideal for use with the S&S Super Sidewinder Hot Set Up Kits), and 4 1/8in bore engines with stock or S&S cylinder stud pattern (ideal for custom applications and for use with the S&S 124in Hot Set UpKit)
  • Available with silver powder-coat or black powder-coat
  • Made in the USA
  • This project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.

Manufacturer Part Number: 106-4057