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Grover Accordion Accessory (502C)

4.8 4.8 out of 5 stars 540 ratings

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Grover

Purchase options and add-ons

Color Chrome
Brand Grover
Model Name 502C
Item Dimensions LxWxH 4.4 x 0.8 x 8.7 inches
Item Weight 6.4 ounces

About this item

  • Insert the string through the post hole, wrap around once, then lock by tightening with the thumb screw.
  • Locking machine heads utilize the famous 18:1 Rotomatic design with a "thumb screw" mechanism.
  • Perfect replacement for the most standard machine heads. Chrome, 3 Per Side.
  • Includes all mounting hardware.
  • Insert the string through the post hole, wrap around once, then lock by tightening with the thumb screw.
  • Insert the string through the post hole, wrap around once, then lock by tightening with the thumb screw.
  • Locking machine heads utilize the famous 18:1 Rotomatic design with a "thumb screw" mechanism.

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$84.79
Get it as soon as Monday, Apr 1
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Sold by Instrument Alley and ships from Amazon Fulfillment.
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$17.41
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Grover

Grover Accordion Accessory (502C)


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What's in the box

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  • Product Description

    The newest addition to the Grover family, these locking machine heads utilize the famous 18:1 Rotomatic design with a “thumb screw” mechanism which locks the string into place. Insert the string through the post hole, wrap around once, then lock by tightening with the thumb screw. Perfect replacement for the most standard machine heads. Includes all mounting hardware.

    Looking for specific info?

    Customer reviews

    4.8 out of 5 stars
    4.8 out of 5
    540 global ratings

    Customers say

    Customers like the quality, ease of installation, and appearance of the tuners. For example, they say it's a quality product, holds in tune, and is easy to install. Customers are also impresseded with the modern-looking design and locking mechanism. That said, opinions are mixed on fit and value.

    AI-generated from the text of customer reviews

    87 customers mention84 positive3 negative

    Customers are satisfied with the quality of the tuners. They mention that they look great, perform excellent, and are manufactured well. Some say that the tuner is an amazing replacement for the horrible stock tuners, and that it works great without any drilling. Overall, most are happy with their purchase and recommend them to others.

    "...PROS- Quality product- 18 to 1 tuning ratio vs. 14:1 on original rotomatic-..." Read more

    "...These are fantastic and very high quality.Some tips for installing......" Read more

    "...A simple screw driver and a rachet is all you need. Pretty and works well.GREAT TUNING STABILITY." Read more

    "...Work great too!" Read more

    80 customers mention77 positive3 negative

    Customers are satisfied with the tuning of the musical instruments. They mention that the tuners are rock solid, hold in tune, and feel like precision instruments. The tuning stability seems improved, and the changes are a breeze. They also appreciate the gradual tuning, and say that the finish is flawless.

    "This is a good tuner, but just a little misleading that they describe it as "using the rotomatic design", and a "perfect replacement"..." Read more

    "...The look, the fit, and the feel are absolutely outstanding. These are fantastic and very high quality.Some tips for installing......" Read more

    "...Pretty and works well.GREAT TUNING STABILITY." Read more

    "...on the Grovers works like a charm and of course they feel like precision instruments...." Read more

    43 customers mention43 positive0 negative

    Customers find the locking machines for musical instruments easy to install. They mention that there's no drilling or filing needed, and the machines drop right in with no hassle. Customers also say that the strings stay in tune and are much easier to restring.

    "Simple to install. A simple screw driver and a rachet is all you need. Pretty and works well.GREAT TUNING STABILITY." Read more

    "No drilling, reaming, sanding, etc...." Read more

    "...Anyway, nice locking machines, pretty darn easy to install...." Read more

    "...These dropped right in with no hassle. The only drawback is that I had to drill pilot holes for the little screws into the back of the head stock...." Read more

    23 customers mention23 positive0 negative

    Customers are satisfied with the appearance of the musical instruments. They mention that it looks great, has a beautiful chrome finish, and is modern-looking. They are also happy with the look and feel of the tuners, which are well-made and have a flawless finish. Some say that the tuner is a nice drop-in for Kluson style instruments, and that it matches nickel hardware reasonably well.

    "Simple to install. A simple screw driver and a rachet is all you need. Pretty and works well.GREAT TUNING STABILITY." Read more

    "...Nice drop in for Kluson style (you will be left with an extra hole)...just need to enlarge the hole to 10mm...." Read more

    "...They feel better (smoother) while tuning and they look better than the originals, IMO. They even came with 12 screws (only need six)...." Read more

    "...Totally sweet. Use tape as a depth reference (see pic)..." Read more

    20 customers mention20 positive0 negative

    Customers find the locking tuners on the musical instruments easy to use. They say the tuners stay in tune and change strings in less than five minutes. Some mention that the locks make restringing a breeze.

    "...So much easier for stringing up the guitar (straight in and lock), and they hold in tune, in my opinion, better than the standard tuners..." Read more

    "...My mod shop Fender Strat came with locking tuners which make string changing so easy, I bought these for my Gibson SG Supreme...." Read more

    "...Drop in installation, with no drilling required. String changes are a breeze and tuning stability seems improved." Read more

    "...and makes changing strings on stage a breeze, literally seconds...." Read more

    18 customers mention18 positive0 negative

    Customers like the locking mechanism of the musical instruments. They say it works well, makes string changes a breeze, and stays in tune fine. Some mention that the locking tuners are great for bigsby guitars.

    "...Locking mechanism for fast string changes, also great for bigsby guitars.CONS-..." Read more

    "...And he is pleasant and quite knowledgeable. Anyway, nice locking machines, pretty darn easy to install...." Read more

    "...The machined gears are smooth and stable, and the locks work great." Read more

    "...The locking tuners stay in tune fine." Read more

    47 customers mention31 positive16 negative

    Customers are mixed about the fit of the tuners. Some mention that they fit perfectly for their Les Paul Studio Deluxe II and Gretsch Streamliner Guitar with no drilling. However, others say that the physical dimensions are different than the original design, and the tuner won't fit a Les Paul headstock. The wheel seems too loose and doesn't have that snug feel they're used to with locking tuners, and they'll be a bit short on the string peg side.

    "Perfect in every way! They are a drop-in replacement with a perfect fit...." Read more

    "...one thing that I love the most about these things is they make the strings feel tighter...." Read more

    "...The physical dimensions are different than the original design both in the footprint, the stem length, and the stem housing length that extends into..." Read more

    "Drop it perfect fit for my Gibson Les Paul" Read more

    9 customers mention6 positive3 negative

    Customers are mixed about the value of the musical instruments. Some mention it has a great price, while others say it's a bit pricey.

    "...They're less expensive to use and have never failed me...." Read more

    "Top of the line tuners at a great price , saved $35 from what the music store wanted for them !" Read more

    "...maybe just one or two, nothing major, it works, and #2, they're a bit pricey, I think normal ones are $49 and theses were $79, I'm willing to pay..." Read more

    "Great tuners great price arrived within 5 days fits perfect on my les paul. much more efficient tuners, 18:1 works so much better..." Read more

    Grover 502C
    4 Stars
    Grover 502C
    They are not direct replacement for Epiphone Les Paul Ultra 3. 592C is smaller than the stock tuner.
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    Top reviews from the United States

    Reviewed in the United States on December 20, 2012
    Style: GroverVerified Purchase
    60 people found this helpful
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    Reviewed in the United States on April 7, 2018
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    Reviewed in the United States on December 15, 2022
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    Reviewed in the United States on February 20, 2017
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    Reviewed in the United States on January 30, 2024
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    Top reviews from other countries

    Translate all reviews to English
    Chris mcphee
    5.0 out of 5 stars Works great
    Reviewed in Canada on July 31, 2023
    Style: GroverVerified Purchase
    Pedro Ortiz
    5.0 out of 5 stars MANTIENE EXCELENTE LA AFINACIÓN
    Reviewed in Mexico on January 25, 2021
    Style: GroverVerified Purchase
    Customer image
    Pedro Ortiz
    5.0 out of 5 stars MANTIENE EXCELENTE LA AFINACIÓN
    Reviewed in Mexico on January 25, 2021
    El mejor upgrade que le he hecho a mi guitarra. Mantienen muy bien la afinación.
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    Geek
    4.0 out of 5 stars Gut aber sehr teuer
    Reviewed in Germany on April 5, 2021
    Style: GroverVerified Purchase
    Luis DA SILVA RIBEIRO
    5.0 out of 5 stars Excelente!
    Reviewed in France on November 20, 2020
    Style: GroverVerified Purchase
    Moosepig
    5.0 out of 5 stars Expensive but worth it
    Reviewed in the United Kingdom on January 13, 2020
    Style: GroverVerified Purchase
    One person found this helpful
    Report