Ranger SHORTY Strongbox RAD Designs AND a DIY builder's model

AND a  DIY builder's model that is case only - allowing you to use and install your own gears

and provide incredible durability to the internal and external shifter components

Strongbox underdrives and more

Designed for OEM

Ranger SHORTY Strongbox RAD Designs AND a DIY builder's modelThe Ranger Shorty Strongbox underdrive by Behemoth Drivetrain is engineered for extreme strength, low weight, and incredible performance. We offer both a fully geared, assembled and ready to install model, AND a DIY builder's model that is case only allowing you to use and install your own gears. Gear Compatibility: The Ranger Standard Strongbox case is designed to be compatible with standard Borg Warner 1354 gears. Billet Aluminum over Cast: Instead