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Based on price data from 4 merchants for "Graph Tech PRU-4004-BK Ratio Ukulele Rear Mount Tuning Machines". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Introducing the Graph Tech PRU-4004-BK Ratio Ukulele Rear Mount Tuning Machines - a revolution in the world of ukulele tuning. These tuners have been meticulously designed to make your ukulele feel balanced, not headstock-heavy. Forget the struggle of tuning with the zero-backlash feature, which eliminates static friction and countermovement, making tuning your ukulele an absolute breeze.
Lightweight yet incredibly strong, these world-class tuners are crafted from a composite material that guarantees a better-balanced instrument. With the uke-friendly 6:1 gear ratio, these tuning machines make sure your ukulele always sounds pitch-perfect. The Ratio signature buttons not only look sleek in black, but also provide a smooth tuning experience.
Easy to mount with two screws, these tuning machines fit most enclosed headstocks. With a tested traction capacity of up to 34 kg, these tuners are as robust as they are efficient. Each pack comes with four pieces, offering great value for your money.
Key Features:
- Ukulele-friendly 6:1 gear ratio
- Zero-backlash feature for easy tuning
- Lightweight composite material for a balanced instrument
- Fits most enclosed headstocks
- Tested traction capacity: up to 34 kg
- Easy mounting with two screws
- Ratio signature buttons
- Package includes 4 pieces
Product specs
| Intended Instrument | Ukulele |
| Configuration | 2+2. Rear Mount |
| Finish | Black |
| Gear Ratio | 6:1 |
| Peg Diameter | 0.232" (peg), 0.236" (6mm peg hole) |
FAQs
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Are the Graph Tech PRU-4004-BK Ratio Ukulele Tuning Machines easy to install on my ukulele?
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Yes, the Graph Tech PRU-4004-BK tuning machines are designed for easy installation on ukuleles with a 2+2 rear mount configuration. Ensure your ukulele has a 6mm peg hole for a proper fit.
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What is the benefit of the 6:1 gear ratio on these tuning machines?
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The 6:1 gear ratio allows for precise tuning adjustments, making it easier to achieve and maintain accurate pitch on your ukulele.
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Will the black finish on these tuning machines match my ukulele?
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The Graph Tech PRU-4004-BK tuning machines feature a sleek black finish, which complements a variety of ukulele styles and colors, adding a modern look to your instrument.
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Are these tuning machines suitable for all ukulele sizes?
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These tuning machines are generally suitable for standard ukuleles. However, it’s important to check the peg hole diameter and mount configuration on your specific ukulele for compatibility.
Reviews
PROS
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Lightweight design reduces headstock weight significantly, improving ukulele balance
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Easy installation, though may require minimal reaming
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Holds tuning well, with precise 4:1 or 6:1 ratio
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Sleek appearance with rear mount design
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Durable plastic construction less prone to moisture damage
CONS
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Some users report internal breakage and durability issues
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Requires drilling new holes and potentially filling old ones
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Not suitable for ukuleles with thin headstocks, affecting string angle
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Installation can be tricky, potentially needing woodworking skills
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Inconsistent quality control with some sets having lubrication issues
1.0 out of 5
Based on 1 Review and 1 Rating
579
Avoid at all costs!
Decided to have these installed on my Kala tenor ukulele - which was a mistake. Twice one of the pegs has broken, resulting in it turning back around and not being able to stay in tune.
I would like to get these removed and replaced with a higher quality tuner.
Genre Usage
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