TFL 56 1420mm Genesis Carbon fiber Stepped Hull Cat W/ Twin 5684 Motor 300A ESC This is the largest and most powerful prebuilt boat we carry. TFL built this boat out of carbon fiber to be both super strong and very lightweight. Both are very important if you're trying to make a fast electric rc boat. Then we had them inlay an extra layer of Carbon Kevlar for even more strength. This boat comes assembled with all high-quality equipment, including CNC aluminum hardware. Includes: (2) ESC's: Pro Marine 300A ESCs 8-15s (This artr is built for 10s Use) (4) in hull-mounted water pickups for superior water cooling.(See pic 5)(2) Motors: 5684 / 1000KV Brushless Motor (1) Carbon fiber hull with Carbon Kevlar inlay (Picture 6)(1) Set of CNC-4814350 left and right 3-blade propellers (2) Large adjustable battery trays with sled removal system.Requires: (1) 2 Channel Radio System (1) Standard-Sized Servo 30 or 40kg in strength(4) 4s or 5s 100c 5000mah Lipo packs with EC8 Connectors (1) Rx Pack(2) ose-ec8-series Y harnesses if you will be running packs in series.