i think the cost to change internal ratio to 1.94 is around usd 14.40 + 9.60+9.60 +9.80 = usd43.40
do it's really make different to the speed ?
some said lighten the car will carry more speed in corner but i dont see much different between abit heavy car and lighten car during race.. i do see a car with 1600g race with 1500g car and d end still 1600g car win...
correct me if i'm wrong......