I agree tomb. The clutch and 2 speed are very important to have set right to set fast laps. Once you do that then go for the weight saving measures. No point of having a really lite car that hardly moves cause the clutch isn't set right
On another note, i bought the xray purple (33lb) spring set and they are all the same length, which is the length of the longer rear shocks. Should i use all four on the car or is it a set of 4 rear springs? I assumed they were different sizes but on closer inspection found them all the same length. Not sure what to do