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TST 2 Pin LED Flasher Relay Gen2-F

2 Pin Configuration TST Brand Gen 2-F Flasher Relay Adjustable Flash Rate What's Included

TST 2 Pin LED Flasher Relay Gen2-F

This relay will fix your flash rate problem caused by aftermarket signal lights and/or integrated tail light. If your signal lights flash too fast or do not flash, this part is your solution! Plug and play - easy installation.

Only ONE relay is needed per motorcycle regardless of front and rear signal set-up.

Weight 0.10 LBS
Price: $19.35
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If buying this product as part of the Buy Together bundle below, define these options there.


  • Slows signaling flash rate back to the normal rate when your bike goes into hyperflash state (or your signals stay on constantly)
  • Adjustable functionality to speed up or slow down flash rate to your preference
  • Plug and play installation: simply replaces the relay already on your bike
  • Fits like OEM
  • Relay housing is flexible so that you can access the adjustment dial inside the unit

This component works with the following signal configurations:

  1. All stock
  2. Stock taillight, aftermarket signals
  3. Integrated taillight, stock signals
  4. Integrated taillight, aftermarket signals.

The relay comes preset to 85 cycles per minute. You can alter the flash rate to make it faster or slower. If you slip off the grey cover you can access an adjuster that will enable you to change the flash rate to your liking.

NON U.S. BUYERS: Please verify the pin configuration before purchasing. If your bike has hazard lights it may need a four pin flasher relay. Please also note the pin configuration and make sure it matches what is on your bike. IT IS YOUR RESPONSIBILITY TO VERIFY FITMENT BEFORE MAKING YOUR PURCHASE.

Tech Tip Episode Explaining Relays and Resistors

  • 2-Pin LED Flasher Relay
  • 1 Year Warranty (See our warranty policy here)

Example Installation on 2017 Honda Grom

Example Installation on a Suzuki GSX-S1000

Example Installation on a Ninja 250R

Flash Rate Adjustment Instructions

Additional Installation Videos

WARNING: Cancer and Reproductive Harm -


Customer Reviews:

Average customer rating:
(11 reviews)  

5 Most useful customer reviews (see all reviews):
Emmanuel Karabetis
Oct 10, 2016
I meant to rate this a four. My apologies. Easy install, but we lost the clicks with this flasher relay. Definitely works great, though.
### TST NOTE ###
We updated your rating to 4 stars, Emmanuel. Take care!
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May 26, 2017
The flasher relay is 100% needed. Even with resistors on the rear integrated signals, the fronts will not flash. The cheap "clip in" resistors will work.
The nylon washer should be larger. It tends to flex and not seat properly. Works fine once positioned well, but it'd be nice to see a proprietary washer designed for the Grom mounts. Other than that, the lights are great quality and really bright.

Advantages: Cheap
Looks good

Disadvantages: Harnesses are an additional cost (why not put the OEM style connector on instead of the bullet connectors?).
Flasher relay is a must.
Cheap installation hardware.
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Jun 24, 2020
Plugs right in no issues. It's great that you can control your flasher speed as well with this! Got mine on strobe to really grab peoples attention of my intent to turn.
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Apr 27, 2020
Came in on time even with the pandemic going on
Fast and easy install on 2014 Kawasaki Ninja
Great quality product/craftsmanship
This is a must have when switching to LED lights. Made my life a lot easier definitely recommend.
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Chad Harrigan
Apr 3, 2020
This customer purchased the item at our site.
Once again excellent product from TST Industries!! Love your products!

Advantages: Works perfect and fixed my issue for my grom clone! The Vader 125cc!!

Disadvantages: None!
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