The GRX90, also known as the GRX90A, is an RX series solid body electric guitar model introduced by Ibanez in 2000. It is part of the entry-level GIO line.
The GRX90 features a basswood body with a decorative top mated to a maple neck with a 22-fret rosewood fingerboard with dot inlays. Components include Ibanez pickups in an HSH configuration and a synchronized tremolo bridge.
The GRX90 is sold only in Asia. In Japan it comes packaged with a beginner's kit including a strap, tuner, cleaning cloth, picks and small accessory pouch.