Product Description
Knobtown Cycle brings you the S&S CYCLE CASE ENG NAT 48-64, built for riders who demand quality and reliability.
Key Features
- Include crankcase bolts, washers and nuts, cylinder mounting studs, timing hole plug, magnetic drain plug, assorted breather and oil line fittings, top end oil screen spring and plug, sprocket shaft Timken® bearing assembly, oil seal, pinion shaft main bearing race, cam needle bearing assembly, oil pump shaft bushings and installation instructions
- Bearing races are all line honed and breather cavity is precision machined to optimize breather timing for maximum oil scavenging
- Machined for 3.4375″ cylinders and tapped 1/4″-20 for gear covers, oil pump, tappet guides, timer and timer advance
- Drilled for 5/16″ generator mounting bolts
- Made in the USA
- Use Timken style sprocket shaft bearings and ’58 and later pinion bearings (will not accept ’57 and earlier flywheels).
- ’63-’65 models with outside oil lines must use oil port to the rear of the tappet block or oil port in gear cover and use custom oil lines.
- Generator crankcase gear kit includes circuit breaker drive gear, idler gear, circuit breaker gear. Shims and shafts must be purchased separately.
- Machined for ’48-’62 panhead cylinder oil feed.
- Machined for ’55-’64 tin primary.
Product Specifications
- Part Number: 09200124
- Brand: S&S CYCLE
- Weight: 31.40 lbs
Professional Installation Available
Buy online or visit our Kansas City showroom. Contact us for installation service options! Free Ship to Store!
Part Locations
| Location |
Available |
| Wisconsin (WI) |
3 |
| New York (NY) |
0 |
| Texas (TX) |
0 |
| Nevada (NV) |
0 |
| North Carolina (NC) |
0 |
| National Total |
3 |
Stock levels last updated: January 30, 2026 8:09 PM
Professional Installation Available
Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.
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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