The TO SYST 180 is a 2-way speaker system with a 7"/180 mm carbon woofer equipped with a large voice coil, and a 1"/25 mm tweeter with neodymium magnet:
The tweeter uses the ESB CS-TOT1 1"/25 mm component tweeter, with special adaptor to fit many Toyota vehicles.
The woofer uses the ESB CS-TOW7 7"/180 mm component woofer, with special adaptor to fit many Toyota vehicles.
Crossover: ESB CS-TOT1CX dedicated crossover. 
Compatibility: See Data Sheet