Whether you are racing around the track at Lime Rock or racing around town to pick up the kids, you need to know when to shift up to the next gear. Sometimes you can rely on your ears to tell you. Sometimes you can check your tachometer to let you know that the RPMs are perfect. But if you are on the track and you cannot take your eyes off the asphalt for a split second and you cannot hear your engine, how can you know the precise moment to shift? One way is by installing an B&M Shift Control Unit. Our shift control unit uses advanced micro circuitry to let you know the perfect point when to shift to the next gear. Our shift control units are designed to be used with all standard, electronic and Vertex ignitions. The B&M Shift Control Unit installs right on your dashboard and is always in plain sight. Shift control units come in a wide range of desired RPM points. So surely there is one designed just for you and your pride and joy. Trust the same shift control unit that professional drivers have been using for years. Make an B&M Shift Control Unit a part of your car. Car enthusiasts always want great support and help while buying good quality automotive parts. Because you deserve that, we make available a 24-hour, 7 day a week technical support hotline to answer your questions. Everybody hates to pay for shipping, that's why we offer 100% free shipping for all orders $50 and higher. If you spot a lower price elsewhere, give us a call - we always beat any legitimate auto part price.