Infinity 4 Speaker System SKU: Infinity-4



Free System Design Call Now 1(888)311-0016

Our absolute favorite speaker system for bolt in and smile results. This speaker system is the nicest sounding setup right out of the box that we have ever encountered. The speakers can be added to a factory Harley radio without an amplifier, DSP, extra cabling, or any tuning and you get an instant jump in output and sound quality. 

Future Upgradeable

Although these speakers work spectacularly well without an amplifier, they are even better with an amplifier. So if you want another great performance boost down the road, you can always add an amplifier and get another huge boost in output. The Infinity Kappa speakers are capable of hanging with some of the most expensive and power hungry speakers on the market. 

Our favorite amplifier for these speakers can be found here.

Look No Farther

If you are looking for a guaranteed high performance result and no fuss installation, these are the speakers you want. 

Product Description

Radio Flash Required

We offer a free loaner flash tool as well as free tech support. We have a special radio flash procedure specifically for a factory radio and no amplifier with these speakers, so be sure to ask for instructions.

Free Radio Flash Loaner Tool


Flash Your Bike Yourself and Be Sure That the Job Is Done Right

Our flash tool rental kit ships with all of the parts required to flash any Harley touring bike radio from 2014 - current year. The kit ships with a return shipping label for your convenience. After you are finished with the tool simply drop it in the mail and receive a full refund for your $200 deposit.

$120.00 Value! 

Read all of the details here


  • 1998 through 2013 Street Glide, Road Glide, Electra Glide. Fairing speaker adapters required that can be found here.
  • 2014 to current year Street Glide, Road Glide, Electra Glide - Drop in fit.
  • 2014+ Ultra Limited - This kit adds lid speakers and does not include replacement speakers or connections for the tour pack speakers. We do offer those additional parts and options. Call for more information 1(888)311-0016


  • 3 Year


Water Proof

Very High Level Performance

Road Glide

Street Glide


Kappa Perfect 600X

  • Power handling: 75Wrms, 225W peak
  • Sensitivity (@ 2.83V): 93dB
  • Frequency Response: 60Hz - 20kHz
  • Impedance: 3.0 ohms

Kappa Perfect 900X

  • Power handling: 75Wrms, 225W peak
  • Sensitivity (@ 2.83V): 93dB
  • Frequency Response: 60Hz - 20kHz
  • Impedance: 3.0 ohms

What's Included

Video: Optional "Make Life Easy Package"

  • 1 Pair of Infinity Kappa Perfect 600X Speakers
  • 1 Pair of Road Glide Speaker Grills
  • 1 Pair of Street Glide Speaker Grills
  • 1 Pair of Surface Mount Speaker Grills (for lowers or tour pack locations)
  • 1 Pair of Infinity Kappa Perfect 900X Speakers

What's Not Included

  • Optional Radio Flash Tool
  • Optional Plug & Play Wire Harnesses for rear speakers