@@Motor_Alchemist thanks for the comment! I believe it’s because they are lighter and Caterham wanted to manage the performance step up from 310… however I will be sure to ask Caterham next week and report that facts back! 😂🏎️🤙🏻
@@DMAcidRacing Excellent 😂 I look forward to the answer. While you’re speaking to them ask when they’re going to fill the gap between the 420R and 620 model 😀