Ratio Electric Locking Machine Heads 3+3 (please select finish and button style) - Graph Tech Guitar Labs Ltd.
Ratio Electric Locking Machine Heads 3+3 (please select finish and button style) - Graph Tech Guitar Labs Ltd.
Ratio Electric Locking Machine Heads 3+3 (please select finish and button style) - Graph Tech Guitar Labs Ltd.
Ratio Electric Locking Machine Heads 3+3 (please select finish and button style) - Graph Tech Guitar Labs Ltd.
Ratio Electric Locking Machine Heads 3+3 (please select finish and button style) - Graph Tech Guitar Labs Ltd.
Ratio Electric Locking Machine Heads 3+3 (please select finish and button style) - Graph Tech Guitar Labs Ltd.
Ratio Electric Locking Machine Heads 3+3 (please select finish and button style) - Graph Tech Guitar Labs Ltd.
Ratio Electric Locking Machine Heads 3+3 (please select finish and button style) - Graph Tech Guitar Labs Ltd.
Ratio Electric Locking Machine Heads 3+3 (please select finish and button style) - Graph Tech Guitar Labs Ltd.
3+3 Ratio Electric Locking Machine Heads (PRL-8311, 8322, 8331, 8341, Select Finish and Button Style) - Graph Tech Guitar Labs
Ratio Electric Locking Machine Heads 3+3 (please select finish and button style) - Graph Tech Guitar Labs Ltd.

3+3 Ratio Electric Locking Machine Heads (PRL-8311, 8322, 8331, 8341, Select Finish and Button Style)

PRL-8311-C0
4.7
Rated 4.7 stars
3 Reviews

Select Finish
Select Button Style

SCIENCE BEHIND RATIO:

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.

We balanced the gear ratios to 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.

RATIO Machine Heads explanation video

 

Description:

The PRL-8311, 8322, 8331, 8341 are a right-handed sets of Locking RATIO® Calibrated Machine Heads for electric guitar that use 3 x 3 tuners, such as Gibson style and PRS style guitars.

A great upgrade over a 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 our Patented InvisoMatch Mounting Plates [opens in new tab].

4 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 Tuned Machine Heads: The New Standard In Tuning Technology

 

Specification:

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 and bushings
Includes complimentary 4 sets of aluminum mounting plates

GUIDES:

Staggered Ratio Measurements.pdfRatio Installation Guide.pdfRatio Installation Guide Video

REVIEWS:


 

4.7
Rated 4.7 stars
Based on 3 reviews
Total 5 star reviews: 2 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
3 reviews
  • JA
    Joe A.
    Verified Buyer
    I recommend this product
    Rated 5 stars
    Yesterday
    Ratio tuners

    BEST tuners on the planet. I now have 5 sets :-)

    Joe

  • TK
    Tom K.
    Verified Buyer
    I recommend this product
    Rated 4 stars
    3 months ago
    3+3 Ratio Electric Locking Machine Heads PRL-8341-CO

    I had a bit of trouble screwing them together on the guitar.I put a drop of oil on the threads and made sure not to over tighten.Never seen this before with Ratio tuners.They felt rough enough that I couldn’t screw them together by hand.Had to carefully use a 10 mil.wrench to finish it.

  • AF
    Alan F.
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 5 stars
    5 months ago
    I put them on all of my guitars.

    This is the way all guitars should ship from the factory.

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