Graph Tech PRL-8421 Ratio Locking Guitar Tuners, 4x2

Looking to upgrade your Sterling by Music Man axe? These simple-to-install locking tuners are made to fit 4x2 headstock designs. A half turn is a semitone!

The PRL-8421 is a right handed set of locking Ratio tuned machine heads for a Music Man, Sterling by Music Man, or other 4x2 style headstock. It has mini contemporary buttons, and a two-pin casing.

Four 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. Premium sets of plates in chrome and gold are available separately.

Ratio - tuned machine heads incorporate different string gauges into the tuning equation. From Low E to High E 39:1, 24:1, 20:1, 39:1, 20:1, 12:1. GraphTech 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.

Dimensions and Weight in Packaging
Shipping Weight: 4 lbs
Shipping Dimensions: 5 x 3 x 2 in
Manufacturer Part Number (MPN): PRL-8421-C0
Shipping Weight: 0.75 lbs
Shipping Dimensions: 5 x 3 x 2 in
Manufacturer Part Number (MPN): PRL-8421-G0

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


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