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Grover 406C Rotomatic Mini 3 per Side Self Locking Machine Heads, Chrome

4.6 4.6 out of 5 stars 570 ratings

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Grover

Purchase options and add-ons

  • World's finest machine heads
  • Locks Automatically
  • Quick String Change
  • 18:1 Gear Ratio for Precise Tuning

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Grover 406C Rotomatic Mini 3 per Side Self Locking Machine Heads, Chrome
Grover 406C Rotomatic Mini 3 per Side Self Locking Machine Heads, Chrome
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Price$66.99$42.59$44.59$67.06$98.88$41.90
Delivery
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it Mar 27 - 29
Get it as soon as Wednesday, Mar 27
Get it Mar 27 - 29
Customer Ratings
Easy to install
4.8
4.6
4.9
Stability
4.8
4.5
4.8
Lock Feature
4.8
4.3
5.0
Value for money
4.7
4.5
4.8
Sold By
VirVentures
Dopro Musical Parts
Kaish Music
musical distributor
Hua Mei
AmplifiedParts

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Grover

Grover 406C Rotomatic Mini 3 per Side Self Locking Machine Heads, Chrome


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Product Description

Grover Rotomatic 406C locking guitar tuning machine heads give you easy tuning and positive string locking. With a gear ratio of 18:1, these locking tuners serve up all the goodness of standard Rotomatics - plus Grover's internal cam post. Stick the string through the string hole, hand pull to tension, and begin tuning. As you start to tune, only the locking cam inside the string post turns. The string post itself starts turning once the string is locked. In under one revolution of the string post, you'll be in tune - and you'll stay that way! Upgrade your axe with Grover's Rotomatic 406C locking guitar tuning machines.

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Customer reviews

4.6 out of 5 stars
4.6 out of 5
570 global ratings

Customers say

Customers like the quality, fit, and ease of installation of the tuners. For example, they mention that they're well built, and a direct replacement for the original tuners, making installation a convenient process. Customers are also impresseded with the tuning quality, saying that they keep their guitar in tune better. They say that the tuner makes string changes fast and easy, and that they come with instructions.

AI-generated from the text of customer reviews

91 customers mention81 positive10 negative

Customers like the quality of the guitar. They say it's well built, has a nice locking mechanism, and is reliable. Some customers also mention that the strings have already mostly stabilized.

"...Instalation was a breeze... they were a perfect fit, and yes they work beautifully!..." Read more

"...They work really well in fact. They are also probably the most precise tuners I've ever used...." Read more

"...But I was able to get it strung and they are working nicely. The thickness of the headstock on this guitar is 5/8th in...." Read more

"I love these tuners!! This guitar is nearly perfect from factory...." Read more

83 customers mention73 positive10 negative

Customers like the fit of the tuners. For example, they say they're a perfect fit for the tuning peg hole and screw placement, and a direct replacement for the original tuners, with no problems at all fitting heavier strings. They also mention that the tuner screws in fine and straight, and stays in tune.

"...The 18.1 gear ratio makes tuning quick and smooth. These locking tuners are a wise option that takes the time and frustration out of changing your..." Read more

"...gear ratio is just wonderful and they're very easy to tune and they stay in tune." Read more

"Easy installation. Literally a plug in play install. Exact fit for my electromatic jet g5000 seres...." Read more

"...They are an exact fit, just remove the old ones and pop these in. Only takes a few minutes to get them swapped out...." Read more

67 customers mention62 positive5 negative

Customers find the installation of the locking rotomatics to be easy. They mention that the locking tuners are a convenient process, and the installation is simple. They also appreciate the instructions that come with the product. Customers also mention that no reaming or drilling is required, and they are an easy upgrade for a Breedlove Discovery.

"...Instalation was a breeze... they were a perfect fit, and yes they work beautifully!..." Read more

"...The 18 to 1 gear ratio is just wonderful and they're very easy to tune and they stay in tune." Read more

"Easy installation. Literally a plug in play install. Exact fit for my electromatic jet g5000 seres...." Read more

"...help tuning stability, and especially, make string changes very, very easy...." Read more

56 customers mention52 positive4 negative

Customers are satisfied with the tuning quality of the guitar parts. They mention that the tuners are great, easy to install, and keep their guitar in tune better than the stock tuners. The tuning is extremely stable, and the guitar stays in tune well enough to finish a song. The tuners also seem much more accurate, and stringing is quick and easy. Overall, customers are happy with the performance of the tuning machines.

"...Really need roller style bridge but this will help immensely with tuning issues for the bigsby." Read more

"...They definitely add an element of tuning stability over the stock tuners, particularly when using the whammy bar, though having a well-cut, lubed..." Read more

"Perfect drop-in replacement for the original 13:1 tuners on my Harley Benton CST-24 (PRS SE 24 copy). Easy install, precise tuning. Silky smooth." Read more

"Grover tuning machines are outstanding. This is why companies like Gibson and D’Angelico use them as standard...." Read more

27 customers mention24 positive3 negative

Customers like the ease of use of the instrument parts and accessories. They say the gears make changing strings fast and easy, and the auto locking tuners make string changes quick and easy. Some mention that the locking mechanism is easy to use and makes it easy to restring the guitar.

"...the fact that they help tuning stability, and especially, make string changes very, very easy...." Read more

"...The Grovers make changing strings WAY easier when dealing with the Bigsby trem pins...." Read more

"...stock tuners you have on your guitar now, and the convenience of changing strings so quickly is just awesome.BUT......" Read more

"...Finally the ease of tuning was awesome!..." Read more

22 customers mention19 positive3 negative

Customers like the value of the tuners. They say it's an upgrade from the cheap stock tuners that came on an AXL guitar.

"...They're moderately priced and I couldn't imagine a better choice.The 18.1 gear ratio makes tuning quick and smooth...." Read more

"...Since the price is probably cheaper than what you could get a set of PRS SE factory tuners(or probably any brand name) for, I just don't understand..." Read more

"...the coolest string locking design on the market... all at a very nice price point...." Read more

"Great Value, Easy to Install, makes the guitar sound better and makes it easy restring the guitar!" Read more

20 customers mention20 positive0 negative

Customers like the appearance of the guitar parts and accessories. They mention that it looks good, is easy to install, and is really cool. Some say that the grovers are groovy and amazing. They also mention that the machine heads keep their instrument in tune.

"...These Grovers are groovy!" Read more

"I put these on my Epiphone Les Paul Jr special edition. They are just fantastic it did require boring out the holes to just the right diameter so it..." Read more

"These are great pegs, work great, just wind them one or two turns after locked ....now, on to Traveler guitas and these tuners..." Read more

"They are beautiful, they keep your guitar in tune better than whatever stock tuners you have on your guitar now, and the convenience of changing..." Read more

18 customers mention14 positive4 negative

Customers generally like the lock of the tuner. They say it's a very nice touch, works well, and is easy to use. Customers also say the locking heads improve restringing speed and are the coolest string locking design on the market.

"Overall, the locking mechanism works, and the strings can be installed without many wraps around the post...." Read more

"...have already mostly stabilized and I'm getting pretty decent performance from the locking action - not as good as Floyd Rose, mind you, but even..." Read more

"...they are far superior to the stock PRS SE tuners, and the locking mechanism is so simple and easy to use, I now wish they were all that way, and the..." Read more

"...Only takes a few minutes to get them swapped out. The locking mechanism is really unique though and I wasn't sure how they would work...." Read more

Hole is too close to the base of the post, but otherwise they work.
4 Stars
Hole is too close to the base of the post, but otherwise they work.
Overall, the locking mechanism works, and the strings can be installed without many wraps around the post.I ultimately decided to return these tuners because the A and E strings were difficult to feed through the posts because there wasn't enough clearance between the bottom of the hole and the nut. I installed these on a Les Paul copy from Monoprice. It's possible that my guitar's headstock is thicker than a standard guitar, so these might work better on another instrument. Both of these strings had to be meticulously worked through the hole in the post, and then the windings scraped along the nut as they were pulled all the way through the post.I didn't really know what "mini" referred to when I placed my order. For clarification, it is the size of the head of the tuning peg. It doesn't look that bad when the full set is installed, but side-by-side with the original tuners, it is jarring how much smaller these tuning heads are.
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Top reviews from the United States

Reviewed in the United States on December 28, 2023
Style: GroverVerified Purchase
One person found this helpful
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Reviewed in the United States on October 28, 2023
Style: GroverVerified Purchase
Reviewed in the United States on March 15, 2024
Style: GroverVerified Purchase
Reviewed in the United States on September 8, 2023
Style: GroverVerified Purchase
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CJ
5.0 out of 5 stars Fixed my stability problems
Reviewed in the United States on September 8, 2023
I bought these for my Blackstar Carry-On since it came with very unreliable tuning stability. It couldn't hold tune through an entire song.

These Grover locking tuners are exactly what the guitar needed. They are an exact fit, just remove the old ones and pop these in. Only takes a few minutes to get them swapped out. The locking mechanism is really unique though and I wasn't sure how they would work. Totally different than locking tuners on my other dozen guitars. Still not sure how this black magic works to lock the strings but it does indeed work. They work really well in fact. They are also probably the most precise tuners I've ever used. They beat out my locking tuners from Fender, PRS, Gotoh and Musicman. Soooo smooth and no play.
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One person found this helpful
Report
Reviewed in the United States on December 28, 2023
Style: GroverVerified Purchase
Reviewed in the United States on May 5, 2019
Style: GroverVerified Purchase
13 people found this helpful
Report
Reviewed in the United States on February 14, 2023
Style: GroverVerified Purchase
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BC
5.0 out of 5 stars Great tuning stability
Reviewed in the United States on February 14, 2023
Grover tuning machines are outstanding. This is why companies like Gibson and D’Angelico use them as standard. This is my first locking set and I am very happy with them. There is no thumb wheel like other locking tuners so they come with instructions. This also helps to reduce weight. I used the stock screws from my guitar to prevent stripping the holes with different hardware. The only thing “mini” about these are the buttons. I replaced them with an acrylic set, which also reduces weight. The 18:1 gear ratio also makes for great stability. As long as your guitar has 10mm holes and a 45° screw angle, these will drop right in without modification.
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5 people found this helpful
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Reviewed in the United States on November 22, 2023
Style: GroverVerified Purchase
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5.0 out of 5 stars My PRS SE Custom 22 Semi-Hollow is perfect once again!!!
Reviewed in the United States on November 22, 2023
I love these tuners!! This guitar is nearly perfect from factory. The only flaw is the factory tuners it comes with, which don’t hold tunning and they’re also hard to tune. My buddy recommended that I get these which are about $50 cheaper (shipping included) than the PRS SE locking tuners and I went with them and made the perfect upgrade on my guitar. When I replaced them I also switch the tuner buttons as you can see in the pictures because the buttons these come with are smaller and my guitar would’ve looked weird with them. I’ve been playing my guitar for days now and it’s amazing how good these locking tuners hold tunning. The difference is day and night!!! Amazing product!!
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Top reviews from other countries

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Amazon Customer
5.0 out of 5 stars Good stuff
Reviewed in Canada on February 4, 2024
Style: GroverVerified Purchase
Max
5.0 out of 5 stars Perfette
Reviewed in Italy on February 7, 2024
Style: GroverVerified Purchase
Mr. S. Moulster
5.0 out of 5 stars Perfect replacement for PRS SE.
Reviewed in the United Kingdom on September 24, 2023
Style: GroverVerified Purchase
Steve G
4.0 out of 5 stars El empaque no estaba sellado, espero no sean usados
Reviewed in Mexico on February 24, 2021
Style: GroverVerified Purchase
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Steve G
4.0 out of 5 stars El empaque no estaba sellado, espero no sean usados
Reviewed in Mexico on February 24, 2021
El producto llego muy rápido. El empaque estaba algo sucio y definitivamente había sido abierto previamente, todos los tuners tenían marcas visibles de huellas dactilares y estaban también algo sucios. Me queda la preocupación de que hayan sido usados. Los instalaré y actualizaré nuevamente la reseña, si funcionan bien podría subir a 4 o 5 estrellas. Actualización: los instale y funcionan bien en mi SE Custom, mejoro un poco la afinación incluso haciendo solos complejos, lo suficiente para quedarme con ellos.
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wr
5.0 out of 5 stars Perfekt für Guild 12-Saiten-Gitarre
Reviewed in Germany on October 24, 2022
Style: GroverVerified Purchase