Xray has announced the successor to their original and very popular XB4 with the XB4’15. Following the lead of other competition-spec 4WD buggies already on the market, the XB4’15 features Xray’s 2-in-1 concept that allows it to run in short battery pack or saddle pack configurations. Apart from this, the other big standouts are the inclusion of a rear top deck and wider body.
As you can imagine with a new Xray release, there are many tweaks, revisions and improvements in many areas of which the more notable ones are listed below:

All-new aluminium chassis frame
All-new chassis side guards
All-new graphite front upper deck
All-new alternative graphite top decks (for short battery pack)
All-new graphite centre upper deck
All-new composite front and rear chassis lower brace
All-new front graphite shock tower
All-new rear reinforced rear uprights
All-new central slipper clutch
All-new slipper clutch outdrives
All-new steel diff crown gear
All-new steel bevel drive gear
All-new aluminium motor bulkhead
All-new central front and rear driveshafts
All-new alternative central front and rear driveshafts (for short battery pack)
All-new +2mm rear roll centre suspension holders
All-new radio plate
All-new longer battery strap
All-new battery strap holders

Source: Xray