ARRMA 1/10 Kraton 4S 4X4 RTR Brushless Speed Truck Green is a ready-to-run Kraton 4S built for rough dirt, grass, jumps, and speed-truck bashing. It uses 4S BLX brushless power with shaft-driven 4WD and includes a wide stance, large all-terrain tires, and oil-filled shocks. Strong acceleration and planted handling support fast runs and big-air sessions. Factory electronics include a Spektrum Firma 120A Smart ESC, Firma 3668 2400Kv motor, metal-geared steering servo, and SLT3 2.4GHz radio with AVC; manufacturer-rated performance is 50+ mph on 4S. Official dimensions: 547 mm (21.53 in) long, 450 mm (17.72 in) wide, 206 mm (8.11 in) high, with a 355 mm (13.98 in) wheelbase. Battery: Required (sold separately). Charger: Required (sold separately). Recommended power package (sold separately): one 5000mAh 4S hardcase LiPo battery with IC5 connector and LiPo balance charger rated for 4S.