As the first AquaCraft mini hydroplane model that’s both brushless AND LiPo-ready, the GP-1 Ultra one-ups the compact racing boat competition! You’ll enjoy super-fast speeds and responsive handling, on lakes and ponds of all sizes. Power is provided by a water-cooled 6-pole inrunner brushless marine motor; the RTR’s Tactic SLT radio offers confident control. A unique “break-away” rudder system swings back upon underwater impact to prevent hull damage. The GP-1 Ultra comes factory-finished, so you can be out on the water in no time, with your choice of ready-to-run (RTR) and Receiver-Ready (Rx-R™) versions.br br Learn more about the AquaCraft GP-1 Ultra by visiting its product page at:br br Join AquaCraft on Facebook at br AQUB1820 – Ready-to-Run (RTR)br AQUB1821 – Receiver-Ready (Rx-R)br Hull length: 16.4 in (416 mm)br Overall length: 18 in (458 mm)br Width: 8.8 in (223 mm)br Height: 4 in (102 mm)br Weight: 14.4 oz (408 g)br br RTR requires: 11.