Graph Tech PRL-8341-B0 Ratio Locking Tuners

Install these 3x3 locking tuners on any applicable guitar as a replacement or as an upgrade for superior tuning stability and smooth mechanical function.

The PRL-8311, 8322, 8331, 8341, and 8351 are right-handed sets of locking RATIO calibrated machine heads for electric guitars that use 3x3 tuners, such as Gibson style and PRS style guitars. A great upgrade over single-gear machine heads, such as Grover, Schaller, Sperzel, Kluson, etc.

It has a two-pin casing that can be used as is, or with Graph Tech's Patented InvisoMatch Mounting Plates. Four different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.


- RATIO patented gear technology
- RATIO Calibrated Machine Heads incorporate different string gauges into the tuning equation.
- From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1.
- Balanced gear ratios for each string simplifying the tuning process.
- With RATIO, a half-turn is a semi-tone!
- Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

-Gear ratio: unique for each string position - one turn-one tone
-Peg holes diameter required: 13/32" (10mm)
-String post diameter: 0.236" (6mm)
-String post length to string hole: 0.910" (23mm)
-Weight per single machine head: 0.083lbs (38g)
-Weight per set of six: 0.496lbs (225g)
-String diameter: up to 72 gauge
-Includes:6 machine heads, mounting screws, bushings, and complimentary 4 sets of aluminum mounting plates
Dimensions and Weight in Packaging
Shipping Weight: 0.82 lbs
Shipping Dimensions: 5 x 3 x 2 in
Manufacturer Part Number (MPN): PRL-8341-B0

For support or warranty questions, please contact the manufacturer:
Phone: 800-388-7011


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