S&s Cycle Grand National 4-1/2" Slip-on Muffler
S&s Cycle Grand National 4-1/2" Slip-on Muffler
In stock
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Estimated delivery: Feb 06 - Feb 10
About this product
About this product
The S&S Cycle Grand National slip-on muffler delivers classic Sportster aesthetics with modern performance enhancements. Designed specifically for the Nightster, this slip-on not only complements the bike's styling but also improves engine breathing and provides a more robust exhaust note. Experience the perfect blend of vintage charm and contemporary engineering with this premium aftermarket upgrade.
Description
Enhance your motorcycle's sound and style with the S&S Cycle Grand National slip-on muffler. This 4-1/2" slip-on offers a unique combination of classic looks and modern functionality. Color-matched to the factory header and shield, it seamlessly integrates with your motorcycle's existing components. The Grand National Thruster machined end cap adds a touch of custom flair, while the removable dB reducer allows you to fine-tune the exhaust note to your preference. Constructed with high-quality materials and precision engineering, the S&S Cycle Grand National slip-on ensures durability and lasting performance. Upgrade your ride with this exceptional exhaust system, designed for enthusiasts who demand both style and substance. Compliant with J2825 standards.
Features & highlights
- Classic Sportster look combined with modern drivetrain compatibility.
- Enhances engine breathing for improved performance.
- Provides a deeper, more aggressive exhaust note.
- Color-matched to factory header and shield for seamless integration.
- Grand National Thruster machined end cap adds custom styling.
- Removable dB reducer allows for sound level tuning (J2825 compliant).
- Made in the U.S.A. for superior quality and craftsmanship.
Technical specifications
- Brand: S&S Cycle
- Color/Finish: Guardian Black
- End Cap Color/Finish: Black
- End Cap Style: Thruster
- Outer Diameter: 4.5" (11.5 cm)
- Type: Slip-On
Important to know
This is a slip-on muffler. No additional hardware is required for installation on compatible models.
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
550-1074
Muffler
Slip-On
Each
11,5 cm (4-1/2")
Thruster


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.

