JBL Stage1 621 Complete Speaker Replacement Kit - Customer Ratings & Reviews

Worked great

This item worked for me, easy install couldn’t ask for some better.

Perfect fit

Perfect fit in my 2005 Frontier. Fits front or rear speakers.

Fast transaction

Fast transaction fast shipping love doing business with Sonic Electronix

Great Product

If you wish to replace you’re factory speaker with something higher quality quickly and easily without cutting the factory wiring connections this is perfect. No cutting or splicing just plug and play. Can easily put factory speakers back if needed. Suitable for smaller amplifier but wouldn’t run anything high power. Very easy to install. I used them in all 4 doors on a Nissan Versa

Plug n play

Simple and easy to use just plug n play if replacing factory speakers definitely makes install easy and quick

Metra Speaker Harness (72-7401)

Fits and works perfectly on a 2012 Nissan Versa sedan. Made installation much easier.

Great product

The easy installation process would definitely recommend. my speakers sound great.

By Jalai on April 30, 2020 Verified purchase

Great product

Was easy to install and work immediately glad i purchased this item

By Anonymous on October 26, 2018 Verified purchase

Perfect Fit

Exact Fit for mounting new speakers to factory harness without hacking the factory wiring.

Great with the Frontier

Used these for front and back door speakers on a 2023 Nissan Frontier. Worked perfect!

By Nicholas on March 5, 2024 Verified purchase

Perfect for brokies like me

Got quality speakers for my 13yo Kia, old speakers rotted away due to being made of paper. These new speakers A: sound better (duh), B: won’t rot away, C: was just under $60 for two speakers, adapters that needed slight modification, and the wiring harness. Best $56 I ever spent

By Dean on October 1, 2025 Verified purchase

Great Value JBL!

Very good speaker for the price point. Can’t wait to hear them cranked to the max!

By eddie on July 16, 2025 Verified purchase