Hertz ST 25K NEO Horn Tweeter set with Grills & Crossovers for Harley SKU: ST 25K NEO

Regular price $479.99 $429.99


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All new pro-level compression horn tweeters replace the old ST25 horns that changed the world of Harley audio. The new design features a new trim bezel with a locking key and rubber mounting rings that keep the parts tight in high vibration conditions.  

Stamped Steel Horn Grills Protect and Give Installations a Finished Look
Each set of horns comes with trim bezels with or without steel grills. This way you can choose the look you want. The grills screw in place with a dedicated bezel nut and stay in place thanks to the included rubber grip rings. 

New Low Depth Motor Opens up Many New Mounting Options That Just Was Not Possible With the Old ST25 Horns
The ST25K Neo horns are lighter weight and have a shallower mounting depth yet they still have the same horn flare for that one-of-a-kind Hertz sound. The new smaller magnets are stronger than the old magnets on the original ST25s. 

New Replaceable Voice Coil/Diaphragms  

Neo ST25 horns now feature a removable diaphragm that can be swapped out without any soldering! This is handy for guys that push their systems way past reasonable limits when at competitions. 

Pre-Wired Crossovers!
The days of having to fabricate a wire harness for bare capacitors are gone. Only ST25K Neo horns come with a pre-wired plug and play crossover.


  • Compatible Year - All
  • Compatible Model - All
  • Location - All
  • Additional Adapter Required - Yes - 2014+ Pro Fairing Kit
  • Modification Required - Yes
  • Plug & Play - No
  • Works with Electric Lid Locks - N/A



2 years


Water Resistant

Very High Level Performance

Road Glide

Street Glide


  • 1-3/4" aluminum dome bullet tweeter
  • Includes inline crossover (9,000 Hz at 6 dB per octave)
  • Designed for SPL competition
  • Handles up to 50 watts RMS (100 watts peak)
  • Frequency response: 3,000-20,000 Hz
  • Impedance: 4 ohms
  • Sensitivity: 107 dB
  • Cutout diameter: 1-11/16"
  • Mesh grilles included

What's Included

  • (2) Tweeters
  • (2) Threaded trim rings (installed)
  • (2) Threaded mounting collars (installed)
  • (2) Grilles
  • (2) 32" Speaker wires with in-line crossovers (each has quick-slides on both ends)
  • (4) Rubber gaskets
  • (2) Trim ring tools