RPM -12mm shorter 3mm thick CF chassis to suit pr racing B10rWe have been doing some rigorous testing and have introduced a 12mm shorter 3mm thick Carbon Fibre chassis for the Pr Racing B10r buggy . This chassis has made major improves the car ok Australian tracks from low grip to medium grip . Major benefits 1. Weight reduction by nearly half of the kit chassis Weight Kit 142g CF 75g 2. A shorter wheelbase giving the car more rotation and more corner speed giving it considerable amount of lateral grip . 3.