GRGM21

GRGM21 Black Night and White (more images)

The GRGM21 is a compact RG-style solid body electric guitar model introduced by Ibanez for 2006. It is the initial entrant in the miKro series guitar line, which features slightly downsized instruments aimed at smaller players. It is produced in China as part of the entry-level GIO line.

The GRGM21 features a solid wood body (see specs for specific species) bolted to a maple neck with a 24-fret fingerboard with sharktooth position markers. Components include dual Ibanez humbucking pickups and a fixed bridge.

In mid-2017 a new fretboard material, treated New Zealand pine, replaced rosewood. For 2018 the bridge was identified as the F106. For 2019 the fretboard material was changed to Jatoba, the body was once again basswood and the 3-way lever pickup selector was replaced with a 5-way. For 2022 the body material was switched back to poplar. For 2024 the output jack was changed to a new mono-unit jack with integrated metal plate.

The GRGM21 was also sold in some markets as a set with a special gigbag as the GRGM21GB. It was also sold as part of a Jam Pack kit including a 10 watt amp, cable, tuner, gig bag, strap and plectrums as the IJM21RU.

In its review of the GRGM21 in 2021 British magazine Total Guitar called it a "great little guitar" and awarded it 4½ (out of 5) stars.

Similar models and special editions

Size comparison of the Mikro and the "full-size" RG.

The GRGM21L is a left-handed version. The GRGM21M is a similar model with a maple fingerboard with dot inlays. The GRGM22QA is a similar model with a gravure quilted maple top. The GRGM21N is a very similar model.

Several GRGM21 limited edition models have been produced, including:

• GRGM08LTD1 (Seventies Sunburst)
• GRGM08LTD2 (Eighties Pink)
• GRGM08LTD3 (Nineties Silver)
• GRGM09LTD1 (lime green neon graphic)
• GRGM09LTD2 (multi-pattern magenta check)
• GRGM21CT1 (red, orange and yellow)
• GRGM21CT2 (blue and pink)

Specifications

Related content: GIO series | miKro series | RG series |

Specifications for GRGM21 / GRGM21GB / IJM21 / IJM21RU

Model name: GRGM21 / GRGM21GB / IJM21 / IJM21RU Year(s) offered: 2006–2025 Sold in: Americas & Oceania / Asia & Africa / Europe / USA 2006–2020 / USA & Canada 2021–2025 Made in: China Price: MSRP: US$199.99 (2011) / US$214.47 (2021) / US$242.84 (2022–2025) / €239 (2024–2025) / US$285.70 (2026) • SMAP: US$149.99 (2021) / US$169.99 (2022–2025) / €202.50 incl. tax (2025) / US$199.99 (2026) Finish(es): Black Night (BKN) / Beam Blue (BMB) 2006–2010 [EU only] / Candy Apple (CA) 2007–2008 / Jewel Blue (JB) 2006–2009, 2012–2016 / White (WH) 2006–2016, 2018–2022 / Yellow (YL) 2011–2013 / Vivid Orange (VOR) 2013
Body Body type: Solid body Body material: 2006–2008: Nato 2009–2011: Poplar 2011–2012 [US only]: Basswood 2012 [EU only]: Mahogany 2013–2018: Poplar 2019–2021: Basswood 2022–2025: Poplar Neck joint: AANJ Bridge: 2006–2017: Fixed bridge 2018–2025: F106 fixed (10.5mm string spacing) Pickguard: Black Strap buttons: 16mm metal button w/ black felt washer Knob style: Plastic top hat (black) Hardware color: Chrome	Neck Neck type: GRGM Neck material: 1-piece maple Scale length: 564mm/ 22.2" Fingerboard material: 2006–2017: Rosewood 2017–2018: Treated New Zealand pine 2019–2025: Jatoba Fingerboard inlays: Sharktooth Frets: 24 / medium nickel silver Nut: Black plastic (41mm) Machine heads: 2006–2008: Ibanez covered 2008–2025: Ibanez die-cast String gauge (factory): .010/.013/.017/.026/.036/.046 Factory tuning: 1E,2B,3G,4D,5A,6E (E Std.)	Electronics/ case Pickup configuration: HH Bridge pickup: 2006–2016: Ibanez Standard/PSND2 (H) 2017–2025: Ibanez Infinity R (H) passive / ceramic Neck pickup: 2006–2016: Ibanez Standard/PSND1 (H) 2017–2025: Ibanez Infinity R neck (H) passive/ ceramic Controls: 2006–2018: Master volume / master tone / 3-way lever pickup selector 2019–2025: Master volume / master tone / 5-way lever pickup selector Output jack: 2006–2023: ¼" mono (side mounted w/ metal plate) 2024–2025: ¼" mono-unit w/ integrated metal plate Recommended gig bag: IGBMIKRO/ GBMIKRO

About this table

Images

Other available finishes

Black Night

Beam Blue

Candy Apple

Jewel Blue

White

Yellow

Vivid Orange

Additional details

Pickup switching diagram (2006–2018)

Controls layout (2006–2018)

Pickup switching diagram (2019–2025)

Controls layout (2019–2025)

Catalogs

• 2006 USA catalog
• 2006 EU catalog
• 2007 Asia & South America catalog
• 2008 North America catalog
• 2008 EU catalog
• 2009 USA catalog
• 2009 EU catalog
• 2010 EU catalog
• 2011 USA catalog
• 2011 EU catalog
• 2012 USA catalog
• 2012 EU catalog
• 2013 USA catalog
• 2013 North America catalog
• 2013 EU catalog
• 2014 USA catalog
• 2014 North America catalog
• 2014 EU catalog
• 2015 USA catalog

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Sources

• GRGM21-WH (5A-02) parts list, Ibanez parts catalog, archived March 2025
• 2014 USA catalog (p. 23)
• GRGM21 product page, Ibanez USA, archived March 2016
• 2018 Europe catalog (p. 37)
• GRGM21 product page, Ibanez USA, archived January 2018
• GRGM21 product page, Ibanez Asia & Africa, archived January 2019
• GRGM21 product page, Ibanez Europe, archived January 2020
• GRGM21 product page, Ibanez USA & Canada, archived January 2021
• GRGM21 product page, Ibanez Americas & Oceania, archived May 2022
• GRGM21 product page, Ibanez Asia & Africa, archived January 2023
• GRGM21 product page, Ibanez Europe, archived January 2024
• GRGM21 product page, Ibanez USA & Canada, archived March 2025