Losi 1/10 Rzr Rey Polaris 3S 4X4 RTR Brushless Side By Side Blue is a ready-to-run RZR Rey built for dirt, sand, gravel, and side-by-side-style trail running. It uses 2S/3S Spektrum Firma brushless power with shaft-driven 4WD and includes independent front suspension, rear trailing arms, long-travel shocks, LED lights, a metal drivetrain, and DX3 radio with AVC. On 3S it is capable of 45+ mph, while AVC helps keep the high-performance chassis tracking confidently. Factory electronics include a Spektrum Firma 130A Smart ESC, 3800Kv brushless motor, metal-geared steering servo, and DX3 2.4GHz radio with AVC; the manufacturer rates the 3S setup for 45+ mph. Official dimensions: length 19" (483 mm), width 11.4" (290 mm), height 10.85" (276 mm), wheelbase 14.3" (363 mm). Battery: Required (sold separately). Charger: Required (sold separately). Recommended power package (sold separately): 2S, 3S LiPo battery with IC5 connector and LiPo balance charger rated for 3S with IC5 charge lead.