Product Description Model: 4RL4 Engine Type: 1-cylinder Horsepower: 4 hp (3 kW) Displacement: 7.5 ci (123 cc) RPM: 4,500 - 5,500 rpm Starting : Manual Gear Ratio: 2.15:1 Shaft Length: 20 in. (508 mm) Weight: 57 lbs. (26 kg) Trim System: Manual trim PRODUCT SERVICE : - AMPHIBIANS - ATV - DIRT BIKE - JETSKI - Outboard Motors For order and more information about our product list, please visit to our official website company maliohobby . com