Guyker BBA150SP Bass Tuning Machines - CNC-Machined Aerospace Aluminum Alloy

Upgrade your bass with tuning machines designed for precise tuning control, smooth gear operation, and reliable performance in repair, replacement, and custom build projects. Made with an aerospace aluminum alloy housing and shaped through CNC machining, these tuners help reduce unnecessary headstock weight while maintaining dependable strength for daily use. Key Features 1:22 gear ratio: Provides fine tuning adjustment for more accurate and controlled bass tuning. CNC-machined aerospace aluminum alloy housing: Made from lightweight aerospace aluminum alloy and processed with CNC machining for a clean fit and precise hardware finish. Brass gear mechanism: Built with brass gears for smooth turning feel and reliable wear resistance. Flexible bass layout options: Available in 4R, 4L, 2R+2L, 1R, and 1L configurations for full replacement sets or single tuner repair. Single-piece repair options: The 1R / 1L options are ideal when you only need to replace one damaged bass tuning machine. Clover-style bass tuner button: Offers a familiar grip and comfortable tuning feel for bass players. Finish options: Available in Chrome and Black to match different bass hardware styles. Technical Specifications SKU / Model BBA150SP Product Type Bass Tuning Machines Suitable For Bass Guitar Layout Options 4R / 4L / 2R+2L / 1R / 1L Gear Ratio 1:22 Housing Material Aerospace Aluminum Alloy Gear Material Brass Manufacturing Process CNC Machining Peg Hole Requirement 9.9 mm String Post Diameter 6 mm String Thru Hole Center Height 22.5 mm Tuner Overall Length 42 mm Housing Length 16 mm Button Width 23.8 mm Mounting Screw Hole Diameter 2.6 mm Mounting Screw Hole Offset 10.5 mm Bushing Type Screw-in Hex Head Button Style Clover-Style Bass Button Finish Options Chrome, Black Compatibility Notes Please verify your bass headstock layout, tuner orientation, 9.9 mm peg hole requirement, 6 mm string post diameter, screw hole position, and original tuner dimensions before ordering. Choose the layout option that matches your bass headstock or the tuner side you need to replace. Package Includes The package includes the corresponding bass tuning machine(s), bushing(s), and mounting screws according to the selected option. Installation Note Please check the measurements of your existing hardware before installation. Bass models may vary by production year, factory, and region, and minor modification may be required depending on the instrument.