FretPrime 4R Bass Tuners — 1:26 Ratio, Open Gear, Black

Product Overview

A set of four black bass tuning machines with open gear design — combining the precise tuning control of a 1:26 gear reduction ratio with a modern black aesthetic. The open gear mechanism provides visual interest and mechanical transparency, while the black finish complements contemporary bass designs. Built for the higher tension demands of bass strings.

Craftsmanship & Materials

Heavy-gauge die-cast base plates with black electroplated finish. 1:26 precision gear reduction ratio for bass-appropriate tuning resolution. Open gear design with visible precision worm and cog mechanism. Cloverleaf knobs for comfortable, high-leverage tuning. Oversized string posts for bass string gauges. 14mm bushings included.

Compatibility & Installation

4-in-line (4R) configuration for standard bass headstocks. Requires 14mm peg holes. Compatible with most Jazz Bass, Precision Bass, and similar designs. Includes press-fit bushings and mounting screws.

Why Choose FretPrime?

Every FretPrime component is manufactured in our ISO 9001:2015 certified facility in Huizhou, China. With over 15 years of guitar parts manufacturing experience, we supply OEM and ODM clients in 35+ countries with factory-direct quality at factory-direct manufacturing support. Our rigorous 16-point QC protocol — covering raw material inspection, CNC precision machining (±0.1 mm), fretwork finishing, and final assembly — ensures every product meets professional standards. Whether you are an independent luthier, a guitar brand, or a distributor, FretPrime is your reliable partner for premium guitar components.