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2015 Ibanez GRGM21
GRGM21 Black Night and White (more images) Red copyright sprite

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.[1] 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.[2] It was also sold as part of a Jampack kit including a 10 watt amp, cable, tuner, gig bag, strap and plectrums as the IJM21RU.[3]

Similar models and special editions[]

Mikro size comparison

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:

Specifications[]

Related content: GIO series | miKro series | RG series | Models-icon
Specifications for GRGM21 / GRGM21GB / IJM21 / IJM21RU
Model name: GRGM21 / GRGM21GB / IJM21 / IJM21RU
Year(s) offered: 2006–2024
Sold in: Worldwide
Made in: China
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
2022–2024: Poplar
Neck joint:
AANJ
Bridge:
2006–2017: Fixed bridge
2018–2024: F106 fixed (10.5mm string spacing)
Pickguard:
Black
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
2019–2024: Jatoba
Fingerboard inlays:
Sharktooth
Frets:
24 / medium nickel silver
Nut:
Black plastic (41mm)
Machine heads:
2006–2008: Ibanez covered
2008–2024: Ibanez die-cast
Electronics/ Strings
Pickup configuration:
HH
Bridge pickup:
2006–2016: Ibanez Standard/PSND2 (H)
2017–2024: Ibanez Infinity R (H) passive / ceramic
Neck pickup:
2006–2016: Ibanez Standard/PSND1 (H)
2017–2024: Ibanez Infinity R neck (H) passive/ ceramic
Controls:
2006–2018: Master volume / master tone / 3-way lever pickup selector
2019–2024: Master volume / master tone / 5-way lever pickup selector
Output jack:
2006–2023: ¼" mono (side mounted w/ metal plate)
2024: ¼" mono-unit w/ integrated metal plate
String gauge (factory):
.010/.013/.017/.026/.036/.046
Factory tuning:
1E,2B,3G,4D,5A,6E (E Std.)

Images[]

Other available finishes
GRGM21 BKN
Black Night
GRGM21 BMB
Beam Blue
GRGM21 CA
Candy Apple
GRGM21 JB
Jewel Blue
GRGM21 WH
White
GRGM21 YL
Yellow
GRGM21 VOR
Vivid Orange
Additional details
HH 3-way toggle
Pickup switching diagram (2006–2018)
Controls VT3L
Controls layout (2006–2018)
HH 5-way single-split
Pickup switching diagram (2019–2024)
Controls VT5
Controls layout (2019–2024)

Catalogs[]

Sources[]

  1. GRGM21 product page, Ibanez USA, archived December 2017
  2. GRGM21GB product page, Ibanez Asia, archived December 2017
  3. 2015 Europe price list/ catalog (p. 15)
  • 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, 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
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