Product Description
S&S CYCLE Flywheel – 4-1/4″ – Big Twin
Key Features
- Flywheels are CNC machined from heat-treated, closed die, steel forgings, and are stronger than cast iron or late style steel flywheels
- Replaces the original flywheels in S&S® 80″ SH80 engines with alternator style crankcases for ’70-’84 Big Twin
- Can be used to overhaul an S&S engine or to build a custom engine using similar crankcases and pistons
- Features 4-1/4″ stroke, 8-1/2″ diameter flywheels, and 7.440″ connecting rods
- May also be used in 88″ engines with 3-5/8″ bore cylinders
- Made in the USA
Technical Specifications
- Weight: 36.89 lbs
- Supplier Number: 32-2235
- Unit of Measure: Each
Current Warehouse Inventory
Stock by Location:
- ✓ Janesville, WI: 3 units
- ✗ Batavia, NY: 0 units
- ✗ Dallas, TX: 0 units
- ✗ Fresno, CA: 0 units
- ✓ Reno, NV: 3 units
- ✓ Asheville, NC: 1 units
- ✓ National: 7 units
Total Available: 14 units
Inventory Last Checked: December 4, 2025 at 1:00 AM UTC
Thank you for Shopping at Knobtown Cycle!
When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.
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