NV271 Bronco Dana 20 6 Spline input Shorty Strongbox DIY Case

The DIY NV271 Standard Strongbox underdrive by Behemoth Drivetrain is engineered for extreme strength, low weight, and incredible performance.  This DIY model is case only - allowing you to choose and install your own gears. Gear Compatibility: The NV271 Standard Strongbox DIY case is designed to be compatible with 31 spline NV271 and NV273 series gears.  These cases do not work with NP242 gears.   Billet Aluminum over Cast: Instead going cheap by using cast aluminum – which can be weakened by air pockets and the  repeated heating and cooling cycles of the casting process – we manufacture the Strongbox from solid Billet 6061 aircraft grade aluminum.  If strength, performance and durability are a priority – there’s no question billet is the way to go. Hardened Steel for Extreme Reliability:  The Strongbox shifter assembly utilizes case hardened steel designed to hold up against the most aggressive shifting and extreme conditions.  The Ranger Standard Strongbox shaft is made from except