DR.PARTS TUNE KEY (BMH7105 BK)
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The Dr. Parts BMH7105 BK is a set of premium 4-in-line bass guitar tuning machines built for players who demand rock-solid tuning stability under heavy playing conditions. Featuring a high-torque 22:1 gear ratio and a fully sealed die-cast housing, these precision-engineered machine heads deliver smooth, accurate pitch control while resisting moisture, dust, and everyday wear — making them an ideal factory replacement or direct drop-in upgrade for most standard 4-string bass guitars, including SX BG204 series and J-bass/P-bass style headstocks.
SKU: 002167
Description
DR.PARTS TUNE KEY (BMH7105 BK)
22:1 High-Precision Gear Ratio — Ultra-fine pitch adjustment with zero gear slippage; built to handle the heavy string tension of bass guitars during aggressive slapping, popping, or hard picking
Fully Sealed Die-Cast Housing — Permanently locks out moisture, sweat acidity, and stage dust to prevent internal rust and premature gear wear
Heavy-Duty Zinc Alloy Build — Robust metal alloy body paired with hardened steel shafts for long-term mechanical durability under consistent use
Ergonomic Y-Style Tuning Buttons — Comfortably contoured pegs for a firm, confident grip during quick on-stage retuning
4-In-Line (R4) Configuration — All four tuners mount on a single side of the headstock; fits standard 4-string inline bass headstocks seamlessly
Drop-In Compatibility — Direct replacement for SX BG204 series and most modern J-bass or P-bass style basses — no modification needed
Sleek Matte Black Finish — Clean, professional aesthetic that complements both vintage and modern bass designs
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