Reds Racing have announced that their WR7 Diamond 3.5cc buggy engine is now available in two different variants, as LTD standard and new HE High Efficiency LTD edition. The WR7 LTD offers the classic high-power 7-ports powered band while the HE High Efficiency variant utilises a low fuel consumption system and smooth power band for improved drivability. In addition both engines come with the improved HCX carburettor that sports a redesigned low speed needle and a new 7075 aluminium fuel intake for improved tuning stability in extreme temperatures.