The Impact Trolley is the only trolley on the market designed specifically for impact braking in the recreational zip line and ropes course industry. Engineered specifically for the zipSTOP Zip Line Brake system, the Impact Trolley provides smoother braking, enhanced rider experience, reduced cable wear, and decreased rider risk. Maximum operating speed is 75 mph (120 kph) and the suitable rider weight range is 33–330 lbs (15–150 kg).