Racing Transmission Assemblies

Unless you are planning to participate in production car racing where modifications are banned or very limited, you need to upgrade your stock car, truck, or SUV to have a successful run on a track or strip. Of course, the first thing you want is more power which can be gained through engine modifications but to get all of this newly-gained power delivered to the wheels safely and efficiently, you need to install a high-performance racing transmission. An OEM automatic gearbox is designed for comfort, not efficiency, so it is hard to imagine a successful rally driver using this type of equipment.

A stock synchromesh transmission uses a special synchronizing mechanism needed to make sure that gears rotate at the same speed before engaging for smooth and noiseless operation. The driver has to use the clutch pedal each time he or she shifts gears, which may take up to one second to do, and that is too long when every millisecond counts. That is when clutchless sequential racing transmissions come into play. Such assemblies feature straight-cut gears which are permanently meshed and engage and disengage through dog clutch mechanisms. Traditional synchromesh gearboxes with helical-cut gears cannot transfer as much power as their straight-cut gear counterparts.

A manual racing transmission with straight-cut gears gives that distinctive whining sound when the driver goes through gears with each of them having its own tone. In drag racing, for example, the clutch is used only during burnouts and launches. When shifting through gears of a sequential transmission, drivers pull or push the lever without even getting their feet off the gas pedal. The electronics automatically cut the ignition for a split second to reduce the pressure on dog clutch components and prevent their premature wear. Visit our online store and browse an extensive catalog of racing transmission assemblies to pick the one that would be the most suitable for your application.