SYM CROX 50 2021-2023. SYM FIDDLE 4T 50 2021-2023. The speed limiter of the original CDI is removed. SYM SYMPHONY ST 50 2021-2024.
The Derestricted 18 Pin ECU is best suited for vehicles that require advanced engine management control, particularly those running SYM Symphony, Crox 50, Sym Jet 4, or Sym Fiddle Euro 5.
