1-3/4" to 1-7/8" stepped mild steel exhaust headers
Uses an advanced internal header for maximum performance
Mild steel construction
All-black heat shields
MIG welded
18mm O2 ports with 12mm adapters
Superbike muffler
4" straight stainless steel muffler body with drilled baffle, welded logo badge, and matching black end cap.
Removable muffler and tips.
Fits 2018-2025 Sport Glide (FLSB), 2022-2025 Low Rider ST (FXLRST), 2022-2025 El Diablo (FXRST), and Heritage models.
Made in the U.S.A.
NOTE: Includes 18mm O2 sensor ports and 12mm adapters.
Items Included:
(1) Front Heat Shield
(1) Rear Lower Heat Shield
(1) Header Heat Shield
(1) Front/Rear Exhaust Pipe Assembly
(1) Megaphone Muffler with Baffle and End Cap
(1) Hose Clamp
(7) Hose Clamps #24
(1) Hose Clamp #24 36
(2) 12 mm adapters
(1) Mounting bracket
(2) 3/8" flat washers
(1) 3/8-16 flange nut
(2) 3/8-16 x 1" hex head bolts
(1) 3/8" spring washer
Fits:
2022-2025 Harley-Davidson Softail Low Rider ST 117 FXLRST Milwaukee-Eight
2025-2026 Harley Davidson Softail Low Rider ST 117 H.O. FXLRST 1923 ABS Milwaukee-Eight
For 2021-later EU Softail/Touring models, the O2 sensor eliminator plug is required (see accessories)
Tech Tip:
Pre-2021 USA mufflers on a 2021-up EU Softail/Touring?
2021 and later US models only have 2 O2 sensors in the manifolds. 2021 and later EU models (Euro5/Euro5+ system) have a total of 3 or 4 O2 sensors, also 1 or 2 downstream in the muffler(s) or cross-section balance pipe.
Therefore 2021-2025 US exhaust systems will not fit 2021-2026 European models.
The O2 Eliminator Plug (see accessories) allows the 3rd downstream muffler O2 sensor to be disabled, without triggering fault codes.
This will allow the use of pre-2021 US or European exhaust mufflers that do not have a downstream O2 sensor connection.
