The Thundershot chassis is the replacement of the then aging Hotshot chassis. The chassis is much lighter and more durble than the Hotshot. Still the basic configuration is more or less the same, independant suspension, closed gearboxes, and prop shaft. The chassis is now an open bathtub type making access much easier. The Thundershot is still much loved by the Tamiya enthusiasts, and was re-released in 2005 and 2008 with only minor upgrades.