Bearings are the first, and are universal for dNaNo cars. Then if you looking for speed you need to consider 2 hop ups that work well together, the gyro unit and the x speed motor. I f you still can spend, then look into the next 2 hop ups that work well together,
The ball differential and the alu wheel hubs. Finally for suspension and precision control get the suspension plate hop up and the front suspension springs. Recap:
Speed & Control: X-Speed Motor, Ball Bearings & Gyro Unit
Stability & Precision: Ball differential gear & Aluminium wheel hubs
Precise Suspension & Control: Aluminium Suspension Plate & Front Sus Springs
Do note all parts except the gyro unit,motor, ball diff, front springs & bearings are subjected to the type of car you have or buying.
Well, that should help. Cheers
