Welcome to OSCA Shop

We’re here to help you navigate car audio properly. We take pride in guiding enthusiasts of all levels, whether it’s a simple upgrade or a full system build.

Need Help? Talk to an expert
Metra BC-9721 Rear 3-Way Speaker Harness Splitter (Harley 1996-2023)
Metra BC-9721 Rear 3-Way Speaker Harness Splitter (Harley 1996-2023)
Metra BC-9721 Rear 3-Way Speaker Harness Splitter (Harley 1996-2023)
Metra BC-9721 Rear 3-Way Speaker Harness Splitter (Harley 1996-2023)

Vendor:Saddle Tramp

Metra BC-9721 Rear 3-Way Speaker Harness Splitter (Harley 1996-2023)

$97.80

Metra Saddle Tramp BC-9721 Rear 3-Way Speaker Harness Splitter | Harley-Davidson Touring FLT & FLH Motorcycles | Electra Glide, Ultra Limited, Street Glide, Road Glide Compatible

The Metra BC-9721 is a 3-way rear speaker harness splitter designed for compatible Harley-Davidson touring audio systems. It follows the factory Harley-Davidson wiring configuration and connects directly to the OE backbone harness or Metra BC-9720 extension harness. It is specifically intended for installations adding the BC-9716 harness, providing a cleaner way to expand rear speaker wiring without fabricating a custom splitter.

In stock, ready to ship
Need help?

Pairs well with

Authorised Australian Seller

Expert Support Available

12-Month Warranty

Shipping Arrives in 7-14 days
Product Information Installation Diagram Video Tutorial

Product details

Advanced Specifications
  • Brand: Metra / Saddle Tramp
  • Model / MPN: BC-9721
  • Product type: Rear speaker harness splitter
  • Configuration: 3-way splitter
  • Application: Rear audio expansion
  • Wiring configuration: Matches Harley-Davidson factory wiring
  • Connection: OE backbone harness or BC-9720
  • Used when adding: BC-9716 harness
  • Vehicle compatibility: Select Harley-Davidson touring models
Key Features
  • 3-way design provides additional rear audio connections from the Harley backbone wiring
  • Matches the factory Harley-Davidson wiring configuration for cleaner integration
  • Plugs into the original backbone harness or BC-9720 extension harness
  • Designed for systems adding the BC-9716 rear speaker harness
  • Avoids fabricating a custom splitter when expanding compatible rear speaker systems
Compatible Models

Electra Glide / Ultra Limited

  • 1996-2006 FLHTCI Electra Glide Classic
  • 2004 FLHTCSE Screamin Eagle Electra Glide
  • 2005 FLHTCSE2 Screamin Eagle Electra Glide 2
  • 2007-2019 FLHTCU Electra Glide Ultra Classic
  • 1996-2006 FLHTCUI Electra Glide Ultra Classic
  • 2015-2016 FLHTCUL Electra Glide Ultra Classic Low
  • 2006 FLHTCUSE Screamin Eagle Ultra Classic Electra Glide
  • 2007 FLHTCUSE2 Screamin Eagle Ultra Classic Electra Glide
  • 2008 FLHTCUSE3 Screamin Eagle Ultra Classic Electra Glide
  • 2009 FLHTCUSE4 CVO Ultra Classic Electra Glide
  • 2010 FLHTCUSE5 CVO Ultra Classic Electra Glide
  • 2011 FLHTCUSE6 CVO Ultra Classic Electra Glide
  • 2012 FLHTCUSE7 CVO Ultra Classic Electra Glide
  • 2013 FLHTCUSE8 CVO Ultra Classic Electra Glide
  • 1996-2022 FLHT Electra Glide Standard
  • 2003-2006 FLHTI Electra Glide Standard
  • 2010-2014 FLHTK Electra Glide Ultra Limited
  • 2015-2019 FLHTKL Ultra Limited Low
  • 2014-2021 FLHTKSE CVO Limited
  • 2015-2023 FLHTK Ultra Limited

Street Glide

  • 2006 FLHXI Street Glide
  • 2006-2023 FLHX Street Glide
  • 2010-2023 FLHXSE CVO Street Glide
  • 2011 FLHXSE2 CVO Street Glide
  • 2012 FLHXSE3 CVO Street Glide
  • 2014-2023 FLHXS Street Glide Special

Road Glide

  • 1998-2016 FLTR Road Glide
  • 2000 FLTRSEI Screamin Eagle Road Glide
  • 2001 FLTRSEI2 Screamin Eagle Road Glide 2
  • 2016-2019 FLTRU Road Glide Ultra
  • 2011 FLTRUSE CVO Road Glide Ultra
  • 2015-2023 FLTRX Road Glide
  • 2012 FLTRXSE CVO Road Glide Custom
  • 2018-2023 FLTRXSE CVO Road Glide
  • 2015-2023 FLTRXS Road Glide Special
  • 2020-2023 FLTRK Road Glide Limited
Best Suited For
  • Harley-Davidson touring builds where additional rear speaker connections are required
  • Installations adding the BC-9716 rear speaker harness
  • Systems using either the factory backbone wiring or BC-9720 extension harness
  • Street Glide, Road Glide and Electra Glide audio upgrades
  • Installers wanting an OE-style alternative to manually splitting rear speaker wiring
Installation Notes

*CA WARNING

This product can expose you to Di (2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov .

12-MONTH LIMITED WARRANTY APPLIED

Free Shipping on All Orders Within Australia Over $1000

12-MONTH LIMITED WARRANTY APPLIED

Free Shipping on All Orders Within Australia Over $1000

About Saddle Tramp⚡

Saddle Tramp is a Harley-focused integration line developed by Metra Electronics, one of the most trusted names in car audio installation hardware. While Metra is known globally for wiring and integration solutions, Saddle Tramp is purpose-built specifically for Harley-Davidson platforms, offering plug-and-play harnesses, amplifier bypass looms, and mounting solutions designed for precise fitment. The result is simpler installs, cleaner integration, and reliable performance, backed by Metra’s proven engineering and manufacturing standards.

Learn More

Fast Dispatch

Orders processed within 24 hours

Authorised Australian Seller

Genuine products from verified suppliers

Standard 12-Month Warranty

Manufacturer warranty on all products

Expert Support Available

Technical assistance from audio specialists