Build your own "Grudge Winner" 2 speed TH400 transmission with this kit.
This kit contains the essential components needed to upgrade your TH400 to our "Grudge Winner" spec two speed transmission.
When used with an OEM gea rset, this package can accomodate as much as 1800 horsepower (vehicle mass dependent.) When paired with an aftermarket gear set, the kit can handle even higher power levels.
Fill out our custom part application with information about your vehicle to get exactly what you need.