The all new Quattro sets the tone with a new speedy look by utilizing the KG 507/508 bodywork. The Quattro chassis is lightweight and free which translates to faster times on the track. Like all Italkart chassis, high quality tubing is used throughout. This frame is made of 28mm/30mm tubing and has special low drag brakes w/magnetic pistons to hold the brake pad off the brake rotor. The instant you release the brake pedal the pad comes off the brake rotor reducing drag.