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S&S Cycle Twin Cam Engine Case - Stock Bore - 31-0172A

Limited Supply: only 3 remaining
Pricing: $2,427.95

Free Ground Shipping (1 - 5 Days)


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

Product Series

Application List

2000 - 2006Harley DavidsonFLHRI Road King
1999 - 2005Harley DavidsonFXD Dyna Super Glide
1999 - 2006Harley DavidsonFLTRI Road Glide
2004 - 2006Harley DavidsonFLHRS Road King Custom
2006 - 2006Harley DavidsonFXDBI Street Bob
1999 - 2006Harley DavidsonFLHT Electra Glide Standard
1999 - 2006Harley DavidsonFLHR Road King
1999 - 2006Harley DavidsonFLHRCI Road King Classic
2003 - 2006Harley DavidsonFLHTI Electra Glide Standard
2006 - 2006Harley DavidsonFXDI35 Dyna 35th Anniversary Super Glide
1999 - 2000Harley DavidsonFXDS-Conv Dyna Convertible
1999 - 2006Harley DavidsonFLHTCI Electra Glide Classic
2004 - 2006Harley DavidsonFXDLI Dyna Low Rider
1999 - 2005Harley DavidsonFLHTC Electra Glide Classic
2004 - 2006Harley DavidsonFLHRSI Road King Custom
1999 - 2006Harley DavidsonFLHTCUI Electra Glide Ultra Classic
1999 - 2002Harley DavidsonFLTR Road Glide
2001 - 2003Harley DavidsonFXDXT Dyna Super Glide T-Sport
2004 - 2005Harley DavidsonFXDXI Dyna Super Glide Sport
2005 - 2005Harley DavidsonFXDC Super Glide Custom
2005 - 2006Harley DavidsonFXDCI Super Glide Custom
1999 - 2005Harley DavidsonFXDL Dyna Low Rider
1999 - 2005Harley DavidsonFXDWG Dyna Wide Glide
2004 - 2006Harley DavidsonFXDWGI Dyna Wide Glide
2004 - 2006Harley DavidsonFXDI Dyna Super Glide
1999 - 2005Harley DavidsonFXDX Dyna Super Glide Sport


  • 31-0172A
  • 31-0172A
  • S&S Cycle
  • Available
  • New


Shipping Information

  • Item Requires Shipping
  • Free Ground Shipping (1 - 5 Days)

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