Product Description
Factory 4.1 Exhaust System is available now from Knobtown Cycle, your Kansas City motorcycle parts specialists.
Key Features
- All new incorporating the latest in Resonance Chamber Technology
- Patented core shape lowers sound level while maintaining maximum power output
- Patented canister shape increases internal volume for more sound absorbing material
- Patented chamber design to enhance and refine exhaust pressure
- Factory Forward Engineering centralizes mass and is less prone to crash damage
- Tuned exhaust with optimized core specifications for each application
- Innovative rear endcap for simple installation of tuning tip inserts or spark arrestor
- Titanium Megabomb included to optimize each machines power output
Product Specifications
- Part Number: 79-41115
- Brand: Fmf
- Weight: 8.165 lbs
Available at Knobtown Cycle
Order online or stop by our Kansas City location. Kansas City riders since 2004!
Part Locations
| Location |
Available |
| Ashley (IN) |
0 |
| Elizabethtown (PA) |
0 |
| Boise (ID) |
2 |
| Midway (GA) |
0 |
| Fresno (CA) |
0 |
| Jessup (MD) |
0 |
| Midlothian (VA) |
5 |
| National Total |
7 |
Stock levels last updated: March 1, 2026 5:07 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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