Big Sexy 2-into-1 Exhaust for Harley Harley Dyna Fat Bob FXDF Low Rider FXDL S Street Bob FXDB FXD 2006-2017 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 Dyna 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: 2006-2017 Dyna Models w/ Mid-Controls or Forward Controls
Dyna Fat Bob CVO FXDFSE: 2009
Dyna Fat Bob CVO FXDFSE2: 2010
Dyna Fat Bob FXDF: 2008–2017
Dyna Low Rider EFI FXDLI: 2006
Dyna Low Rider FXDL: 2007–2017
Dyna Low Rider S FXDLS: 2016–2017
Dyna Street Bob EFI FXDBI: 2006
Dyna Street Bob FXDB: 2007–2017
Dyna Street Bob FXDBB: 2015–2016
Dyna Street Bob FXDBP: 2013–2016
Dyna Street Bob Limited FXDBC: 2016
Dyna Super Glide 35th Anniversary EFI FXDI35: 2006
Dyna Super Glide Custom Anniversary FXDC: 2013
Dyna Super Glide Custom EFI FXDCI: 2006–2014
Dyna Super Glide Custom FXDC: 2007–2014
Dyna Super Glide Screamin' Eagle CVO FXDSE: 2007
Dyna Super Glide Screamin' Eagle CVO FXDSE2: 2008
Dyna Super Glide EFI FXDI: 2006–2010
Dyna Super Glide FXD: 2007–2010
Dyna Wide Glide EFI FXDWGI: 2006
Dyna Wide Glide FXDWG: 2007–2008, 2010–2017

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.