Use this Speed-tuned gear set to obtain much higher top speed with your TL-01 or HBX car, than with the standard gear set.
With the stock counter gear and a 19T pinion you get a ratio of 7.96 - with this speed tuned gear set the ratio is 5.95 - thats 33% more top speed and easily noticeable!
You can go to a ratio of 4.92 if you use a 23T pinion - more than 60% more top speed than with the stock pinion and counter gear. Great for speed runs and large circuits.
Only downside is of course that your batteries will be drained faster - but you're having so much more fun that you are still smiling while you are charging your batteries :-)