Toyota A90 Supra Horn Upgrade (2019–2025)

How to upgrade the horn on a Toyota GR Supra A90/A91 (2019–2025) with a louder, deeper dual horn kit that keeps the factory horns in place.

2 min read

Upgrade your Toyota A90 Supra horn with a dual freeway loud horn kit. Using both high-pitch stock sound combine with deeper, aggressive tone. Professional installation recommended - and available in Melbourne.

Why the Stock Toyota Supra Horn Needs an Upgrade

If you own a Toyota A90 Supra (2019–2025), you know how much attention the car gets on the road. Unfortunately, the factory horn does not sound right and live up to the A90 Supra character. The stock horn is high-pitched, weak, and sounds like a 'a clown' . Many Supra owners avoid using it altogether because it feels out of place in such a performance car. That's why at Sequential Racing, we've tested and found a solution to combine your stock ones with a low sound one. Therefore easily reverting back to stock in the future if needed. (We highly doubt it)

Benefits of a Loud Dual Horn Upgrade

Upgrading your Supra’s horn isn’t just about sound — it’s about safety, confidence, and character.

  • Louder for safety: More noticeable in heavy traffic and emergencies

  • Deeper tone: Combines high pitch with low tone to make a deeper tone. 

  • Dual-tone setup: Clearer and fuller sound compared to OEM

  • Peace of mind: You won’t hesitate to use your horn when you need it most

  • Don't sound like a clown

Sequential Racing’s Australia Recommended Supra Horn Kit

Either not our products we thoroughly test, we recommend alternative Freeway Loud Horn Kit – designed to deliver a strong, deep tone that actually suits the MK5 Supra.

Features:

  • Dual-tone (low + mid frequency) for a fuller sound

  • Compact, durable design

  • High dB output for maximum effectiveness

  • Compatible with Toyota GR Supra A90 (2019–2025)

 

Installation at Sequential Racing Melbourne

Our workshop in Melbourne provides professional installation for Supra owners looking for a horn upgrade. The upgrade is typically takes 2 hours requires accessing wires and into the front bar.

Installation steps include:

  1. Bumper removal for access

  2. Wiring harness and splicing and relay installation

  3. Adding secure mounting of dual horns

  4. Full function and sound check

We also offer Australia-wide shipping for Supra owners who prefer DIY installation.

 

Hear the Difference – Supra Stock Horn vs Upgraded Horn

The transformation is night and day.

  • Stock Horn: High-pitched, weak, “clown-like”

  • Sequential Racing Dual Horn: Deep, commanding, and confidence-inspiring

For more information, contact us or request an install on the Horn upgrade today. 

Don’t let your Supra sound like a toy car when you need to use the horn. Upgrade to the Sequential Racing Dual Freeway Horn Kit and enjoy a loud, low-tone sound that matches the Supra’s true character.

  • Melbourne Installation and Remote Available

  • Australia-Wide Fast Shipping

  • Trusted by the VIC GR Supra Community

 

Shop the Supra Horn Kit Upgrade Now