 From series five of Robot Wars onwards, the weight limit for heavyweight competitors was increased to 100 kilograms (220 lb). This allowed for improvements to the chassis and bodywork of Razer including new titanium outriggers, and 2.5-millimetre (0.098 in) thick armour panels versus 1-millimetre (0.039 in) before. The most noticeable alteration to this version of Razer was a redesigned front scoop. This enclosed the front wheels to reduce side-on impact damage, and greatly decreased the robot's ground clearance to reduce its vulnerability to being flipped, whilst also making it easier to get underneath opponents to crush them. This iteration of Razer won the first Robot Wars Extreme All-Stars championship and series five of Robot Wars, alongside mounting a successful defence of its World Champion title. By the time of Razer's Robot Wars Extreme II appearances, the machine weighed 92 kilograms (203 lb), was 1.14 metres (3.7 ft) long, and reached a top speed of 11 miles per hour (18 km / h).
