Turn System is a great add Turn System is a great add, solid 5 stars. Brake module works great on my CBR 600 but does not work very reliably on my GS1200, they refunded me for the one on the GS. My friend also has one on his Z1000 and it works great, I've been riding behind him to help him test. Overall very good, but customer service is a bit slow to respond.

The company offers no support The company offers no support, after trolling you for your email address by offering to send you via email the results of your comparability test to see if their product will fit your motorcycle. Once they get your email, you are spammed relentlessly daily regarding “10 more discount codes left” “50% off”, even after you buy, and you can bet they are selling your info. The phone number on their website rings and answers to a dead line. When I emailed Support, I was given a generic email that basically says you are on your own! Documented my install on my Yamaha YZF-R1M of this crap product and company. Countless hours trying to figure this out, with no help from crap-systems.com. Here is my install www.r1-forum(dot)com /threads/st2-systems-com-brake-and-turn-signal-modules-warning-this-product-sucks.645340/

THIS DOES NOT WORK AS DESCRIBED THIS DOES NOT WORK AS DESCRIBED, FLASHES brake light when accelerating =, going over road bumps etc, no good. I had 2nd unit sent to me but it was the same, had to claim through paypal as they will not reply to my emails after 2nd module ws posted, AVOID ITS GARBAGE

Faulty units - absence of customer service. Unit does not work properly; tried to talk to tech support one unhelpful response. Now ten days of no responses. Referred as a dispute through PayPal. I note that they are bringing out a new unit - I would avoid it like the proverbial!

1st brake module failed 1st brake module failed, replacement was larger than original and wouldn't fit. Returned module in June 2023 and despite 20+ emails, have not received promised refund.