Grand National Slip-On Mufflers — 4" outer diameter, Slip-On, Black

S&S CYCLE Grand National Slip-On Mufflers — 4" outer diameter, Slip-On, Black – 18-23 Softail

S&S CYCLE
1801-1234
550-0734
Deep-rumble slip-on mufflers that increase horsepower and torque, include removable dB reducer, meet J2825 with reducer, and include all installation hardware.
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€628.55
€762.94
Save €134.39
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Grand National Slip-On Mufflers deliver aggressive sound and measurable performance gains. 🔧🔥

Designed for riders who want deeper rumble without sacrificing compliance, these mufflers offer:

  • Up to 12% more horsepower and 6% more torque when used with the Stealth Air Cleaner Kit
  • Deep performance rumble replaces the stock whisper tone
  • Race-inspired Grand National endcap
  • Removable dB reducer for adjustable sound levels
  • Meets J2825 sound levels with the dB reducer installed
  • Perforated baffle design for consistent flow and sound
  • All hardware included for straightforward installation
  • Made in the USA

Easy to install and tuned for performance, these mufflers bring a race feel and real gains to your ride. 🏁

: 1801-1234
In Stock

Data sheet

Type
Slip-On
Units
Pair
Color/Finish
Black, Ceramic
Base Color
Black
Brand
S&S CYCLE
End Cap Color/Finish
Black
Outer Diameter
10 cm (4")
Material
Stainless Steel
Harley Family
Softail

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
Harley Davidson Softail Fat Bob 107 Softail 2018
Harley Davidson Softail Fat Bob 107 Softail 2019
Harley Davidson Softail Fat Bob 107 Softail 2021
Harley Davidson Softail Fat Bob 114 Softail 2018
Harley Davidson Softail Fat Bob 114 Softail 2019
Harley Davidson Softail Fat Bob 114 Softail 2020
Harley Davidson Softail Fat Bob 114 Softail 2021
Harley Davidson Softail Fat Bob 114 Softail 2022
Harley Davidson Softail Fat Bob 114 Softail 2023