【 Race Spec Machine 】This is a 1/32 scale plastic assembly kit model of the shaft-driven high-performance Mini 4WD racer, the Shadow Breaker Z-3. The model features semi-monocoque Super X chassis which enables motor replacement from chassis undersurface without detaching the body. Also features 24mm diameter low-profile slick tires and 2 sets of gears to choose from. You can assemble the model with either 3.5:1 or 4:1 gear ratio to enable speed/power adjustment according to the track layout. The low, sharp body features a rear wing with large flaps. Additionally, a wide range of Grade-Up Parts are available to further customized your machine.