Vaterra Twin Hammers Large Battery Tray / Rear End Lift Kit / With Sway Bar Adaptor Bracket This kit will adapt your Twin Hammers to be able to accept larger batteries and give you the option to lift the rear end. The kit comes with the aluminum battery tray, Velcro battery strap and hardware. The kit will now work with Vaterra twin hammer sway bar kit P/N VTR334001 If you just need the sway bar adaptor kit it can be found here: http://www.amazon.com/dp/B01B1U27TO