The GRX40 is an RX series solid body electric guitar model introduced by Ibanez in 2000. It is part of the entry-level GIO line. It was also sold as part of the GRX40J, IJX40 and IJS40Jumpstart packages which also contain a practice amp and various accessories.
The GRX40 features a solid body mated to a maple neck with a 22-fret rosewood fingerboard with dot inlays. Components include Ibanez pickups in and HSS configuration and a six-screw synchronized tremolo bridge.
In mid-2017 a new fretboard material, treated New Zealand pine, replaced rosewood.
It was produced simultaneously in China and in Indonesia; as such, multiple versions of this guitar exist for the different markets. For example, guitars sold in Asia since 2015 are equipped with the FAT-6 tremolo while those sold in other markets have the "standard tremolo". Starting in 2018 the GRX40 sold in the US market has a T106 tremolo. For 2019 the T106 tremolo was used in GRX40s sold worldwide.
This same model is also known as the GRX40A in Japan and the GRX40Z in the USA.