EXQUISITE ENGINE: The classic four cycle 4 cylinder Water-cooled Nitro engine has ighly simulation, the appearance of a racing engine. It can be used as a desk decoration, or can modify it to an RC model, like 1:8 1:10 1:12 1:14 RC Car Ship Airplane. More applications are waiting for you to develop. Im sure youll like this engine model. Suitable for personal use or as a high-end model gift to others.Finished engine : You will receive an assembled engine but You can take it apart and reassemble it. This engine features exquisite appearance, superior quality, excellent craft, and strong practicability. MATERIAL: Made of Metal material, durable and exquisite workmanship. Lightweight: It can be better compatible with the RC model and improve the unit power output ratio.FEATURES: (1) Long-stroke for effectively higher torque; (2) Integrated Crank Shaft: It utilizes a 180-degree crankshaft. The ignition timing sequence of 1342 for running smoother and more sensitive acceleration response. The maximum speed is 13,500 RPM; (3) The timing structure of the dual synchronous pulley reduces the risk of gear jumping during high-speed operation; (4) Precision Rocker Arm: Alloy rocker arm and independent intake and exhaust design for more accurate valve switch.Built-in Pump Water-Cooled Kit: The power of the pump body comes from the crankshaft, and the pump body provides circulating power to the coolant. Can cooperate with the cooling fan to enhance the self-cooling performance; Independent four carburetors for more accurate tuning, more sensitive throttle response, and working more stable; High Precision Gear Pump: High-speed structure design & corrosion-resistant material manufacturing. Large flow water pump provides powerful cooling capacity.Model: FS-L400Engine Weight: 980 (No Electric Starter Kit)Displacement: 3.5cc*4Speed: 3200-13500 RPM, Piston Diameter: 16.60mm, Stroke: 17.00mm, Power: 3.05ps.Colour: as shownMaterial: Aluminum alloy + alloy steelSize: 121.05x43.67x90.00mmPackage Contents:1 * Engine complete machine1 * Grease1 * Chinese and English manualOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.