Keeper1st | 2018 Kawasaki Ninja 400 LED vs OEM rear turn signal comparison @Keeper1st | Uploaded July 2018 | Updated October 2024, 4 days ago.
Comparing these new LEDs against the stock incandescent lamp for the rear turn signals.

These LED options come in a pack of four, unfortunately. I guess they assume vehicles using this size bulb do so for front and rear, but that's not the case with the Ninja 400.

amazon.com/gp/product/B01KY7GCXW

Also using an electronic flasher unit: tstindustries.com/TST-2-Pin-LED-Flasher-Relay-Gen2-F.html

See earlier video of LED front turn signals:
youtube.com/watch?v=SCoC7nUkTLg