Heads up bikers, this small addition to your bike will make your ride 10x safer. The ST2 Brake Module is a device that detects your bike slowing down, and instantly flashes your brake light to alert the pesky tailgaters behind you. This SIGNIFICANTLY reduces the risk of being rear ended while riding your bike. Not only does it function when you manually pull the brakes, but also when you downshift and engine braking starts slowing you down. And the best thing about it? It takes only 5 minutes to