2017 Polaris RZR 170 EFI Bright White, Youth FeaturesALL NEW! Colors & Graphics: Check out the All NEW! Colors on Outlaw, Sportsman®, and PhoenixElectronic fuel injected (EFI) 169 cc engine: EFI for consistent starting, improved idle quality, and a crisp linear throttle response.Parent Adjustable Speed Limiting: Easily select from a 15 MPH restricted mode, or unrestricted 29 MPH based on rider skill level. EFI provides more accurate speed control in all operating conditions when compared to a mechanical throttle limiter.