S&S CYCLE - 550-1074 - 4-1/2” Grand National Slip-On Muffler - Black - RH975 Nightster
The S&S CYCLE 550-1074 is a purpose-built muffler designed and tested to perform correctly in the conditions and applications it was made for. Provides a look and feel of the classic Sportster wrapped around a very modern drivetrain. The S&S Grand National slip-on for the Nightster compliments that styling while letting the modern engine breathe while adding a much needed exhaust note, giving you a level of quality that holds up across the full service life of the component. Color matched to factory header and shield. Grand National Thruster machined end cap. Removeable dB reducer (sound level tunable) (J2825 compliant). The 550-1074 delivers exactly what riders need from a quality aftermarket component. Sold individually.
Features
- Provides a look and feel of the classic Sportster wrapped around a very modern drivetrain
- The S&S Grand National slip-on for the Nightster compliments that styling while letting the modern engine breathe while adding a much needed exhaust note
- Color matched to factory header and shield
- Grand National Thruster machined end cap
- Removeable dB reducer (sound level tunable) (J2825 compliant)
- Made in USA
Specs
- Product Name: Muffler
- Base Color: Black
- Type: Slip-On
- Units: Each
- Color/Finish: Guardian Black
- Outer Diameter: 4-1/2”
- End Cap Color/Finish: Black
- End Cap Style: Thruster
- Model: Grand National
- Riding Style: Street
Frequently Asked Questions - S&S CYCLE - 550-1074 - 4-1/2” Grand National Slip-On Muffler - Black - RH975 Nightster
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
