The new TTech Emax GT series brushless motors feature more power and efficiency than previous Emax motors. Motors include accessories for: Backplate mounting with bolt on prop driver or standard mounting. Collet style prop driver. GT2210/13 KV: 1270 Battery(Lipo): 2-3S Shaft Diam: 4mm Prop: GWS 8 x 4 / APC 9 x 4.7 Max Watts: 204 Max Thrust: 970g Weight: 55g Model Weight: 600 - 900g