The GRX90 is an RX series solid body electric guitar model reintroduced by Ibanez for 2021. It was produced in China as part of the entry-level GIO line and is sold exclusively in China.
The GRX90 features an art grain simulated ripple maple veneer top on a basswood body bolted to a maple neck with a 22-fret rosewood fingerboard with dot position markers. Components include Ibanez pickups with a pair of humbuckers flanking a single-coil, a FAT-6 six-screw synchronized tremolo bridge, a plastic nut, and Ibanez die-cast tuning machines.