Big Sexy 2-into-1 Exhaust for 2017-Up Harley-Davidson M8 Touring High Output Stainless Steel Pipe Muffler

Features:
Maximum Horsepower & Torque Gains
Dyno-proven 2-into-1 design specifically engineered to unlock peak performance and massive power increases for Harley 2017-Up M8 engines.
High-Flow Stepped Header Design
Features a precision-stepped header system that optimizes exhaust scavenging for superior throttle response and engine efficiency.
Premium Mandrel-Benton Stainless Steel
Crafted from high-quality, mandrel-bent stainless steel tubing to ensure maximum durability and unrestricted exhaust flow.
Aggressive Deep Racing Tone
Delivers the iconic, throaty "Big Sexy" sound that is loud, crisp, and commands attention on the road or the track.
Performance Bagger & Club Style Aesthetic
The sleek, high-exit profile provides improved ground clearance, making it ideal for aggressive cornering and Performance Bagger builds.
Show-Quality Finish Options
Available in premium finishes like High-Temp Black or Brushed Stainless to complement any custom Harley aesthetic.
Double slip fit and gusset 
Employs a double slip-fit connection reinforced with structural ribs to further enhance the overall structural integrity of the exhaust system.

Stepped 1 3/4" to 1 7/8" head pipes. Featuring a Big Bore header, high-flow merge, and muffler design, This Exhaust creates a broad torque range and an impressive horsepower curve, ensuring an exhilarating riding experience.  4” Rolled Cone Muffler with a 2 ¼ Perforated Baffle and High-temperature sound-absorbing cotton for increased torque and a deep tone. Meticulously tuned by a professional exhaust engineer with 15 years of experience, this system remains quiet during steady-state cruising; however, during overtaking—as engine RPMs surge—the exhaust volume increases by 30% to deliver a commanding presence.

Specification:
Aftermarket 100% Brand New
Material: 304 stainless steel
Color: Available in Brush Finish, Ceramic Black
Size: As the picture
Warranty Period: 2 Years
Sold as a bolt-on kit

Fitment:

Fits: 2017-Up Harley-Davidson M8 Touring Electra Glide, Road King, Street Glide, and Road Glide (FLHT/FLHR/FLHX/FLTRX/FLTRU) Models.

2026-            Harley-Davidson    Street Glide LIMITED FLHXK
2026-            Harley-Davidson    Street Glide LIMITED CVO FLHXKSE
2026-            Harley-Davidson    CVO Street Glide ST FLHXSTSE
2026-            Harley-Davidson    Road Glide Limited FLTRK
2025-2026    Harley-Davidson    Street Glide Ultra FLHXU
2024-2026    Harley-Davidson    Road Glide Police FLTRXP
2024-2026    Harley-Davidson    CVO Road Glide ST FLTRXSTSE
2022-2023    Harley-Davidson    Road Glide ST FLTRXST
2022-2023    Harley-Davidson    Street Glide ST FLHXST
2020-2026    Harley-Davidson    Road Glide Limited FLTRK
2019-2022    Harley-Davidson    Electra Glide Standard EFI FLHTI
2018-2026    Harley-Davidson    CVO Road Glide Custom FLTRXSE
2017-2025    Harley-Davidson    Road King Special FLHRXS
2017-2026    Harley-Davidson    Electra Glide Ultra Limited FLHTK
2017-2026    Harley-Davidson    Electra Glide Police FLHTPI
2017-2026    Harley-Davidson    Street Glide EFI FLHX
2017-2026    Harley-Davidson    Road Glide Custom FLTRX
2017-2026    Harley-Davidson    CVO Street Glide FLHXSE
2017-2023    Harley-Davidson    Street Glide Special FLHXS
2017-2023    Harley-Davidson    Road Glide Special FLTRXS
2017-2022    Harley-Davidson    Road King EFI FLHR
2017-2021    Harley-Davidson    CVO Electra Glide Ultra Limited FLHTKSE
2017-2019    Harley-Davidson    Electra Glide Ultra Limited Low FLHTKL
2017-2019    Harley-Davidson    Road Glide Ultra FLTRU
2017-2019    Harley-Davidson    Electra Glide Ultra Classic EFI FLHTCUI

Package Included:
Bill Of Materials:
1 * Muffler
1 * HD Dyna Front Header
1 * HD Dyna Rear Header
1 * HD Dyna Mounting Bracket
2 * O2 Sensor Plug Kit
2 * Harley 5/16 Clip Nut
2 * 5/16” x 3/4” Flange Bolt
2 * 5/16” x 1 1/2” Flange Bolt

*DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES

DISCLAIMER: Emission-related parts for OEM non-emission control system equipped motorcycles as well as slip-on mufflers that mount downstream of and which do not alter the performance of OEM emission related devices are considered legal replacement parts by the California Air Resources Board (CARB). CARB does not, however, permit the use of aftermarket parts that remove or alter OEM emission control devices unless certified by CARB, other than for closed circuit race use only. More California exhaust information is available at www.arb.ca.gov/.
IMPORTANT: In 2021-up UK, EU, and international models Harley introduced additional O2 sensors located towards the end of the mufflers. These additional O2 sensors need to be eliminated using the Vance & Hines FP4 Fuelpak and blanking plugs. Alternatively, you can contact your local HD dealership for advice on this issue as they may be able to eliminate the O2 sensors for you.