S&s Cycle Twin Cam A Engine Case For Harley-davidson
S&s Cycle Twin Cam A Engine Case For Harley-davidson
Available in stock (5)
-
Estimated delivery: Feb 03 - Feb 07
About this product
About this product
Upgrade your Harley-Davidson's foundation with the S&S Cycle Twin Cam "A" Engine Case. Designed as a robust replacement for stock H-D chassis (carb and EFI), this engine case provides enhanced strength and reliability. Built with precision and incorporating advanced features, this case ensures optimal performance and longevity for your motorcycle.
Description
The S&S Cycle Twin Cam "A" Engine Case offers superior overall strength compared to stock crankcases, providing a solid base for high-performance builds. Featuring dependable Timken®-style sprocket shaft bearings, this engine case is engineered for durability. All passages between the crankcase cam support plate are O-ring sealed, preventing leaks and maintaining optimal oil pressure. The included S&S crankcase breather reed valve is specifically designed to eliminate oil carry-over and oil scavenging problems, ensuring efficient engine operation. Rear motor mount bolts directly to the stock transmission, ensuring full compatibility with the stock primary, charging system, and other components. Crafted from high-quality 356 T-6 aluminum and finished in wrinkle black, this engine case combines strength with a sleek aesthetic.
Features & highlights
- Enhanced Strength: Greater overall strength compared to stock crankcases for improved durability and performance.
- Timken® Bearings: Strong and dependable Timken®-style sprocket shaft bearings ensure smooth and reliable operation.
- O-Ring Sealed Passages: All passages between the crankcase cam support plate are O-ring sealed to prevent leaks and maintain oil pressure.
- Advanced Breather System: S&S crankcase breather reed valve eliminates oil carry-over and oil scavenging problems.
- Direct Compatibility: Rear motor mount bolts directly to the stock transmission, fully compatible with stock components.
- Premium Material: Constructed from high-quality 356 T-6 aluminum for exceptional strength and heat dissipation.
- Made in the USA: Ensures top-notch quality and supports domestic manufacturing.
Technical specifications
- Brand: S&S Cycle
- Product Name: Engine Case
- Vendor Part Number: 31-0181A
- Material: 356 T-6 Aluminum
- Bore Size: 4.125"
- Color/Finish: Wrinkle Black
Important to know
This project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications. Designed as a replacement for stock H-D chassis only (carb and EFI).
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
S&S CYCLE
31-0181A
Engine Case
4,125"
356 T-6 Aluminum
Each


Who is behind Parts Denmark
Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.

