Traxxas TRX3725X Battery expansion kit

Description Traxxas TRX3725X Battery expansion kit (allows for installation of taller multi-cell battery packs) Product Description The battery expansion kit from Traxxas allows the installation of larger format battery packs into the Velineon powered Rustler VXL and Stampede VXL. The package includes hardware to raise the electronic speed control mount and battery posts allowing clearance for taller battery packs.