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SKU:BBA-101-CR-1R
PRODUCT DESCRIPTION
Upgrade your electric bass with precise locking tuning machines. These CNC-machined bass locking tuners feature aerospace aluminum alloy construction, a 1:22 gear ratio, and multiple layout options for compatible bass headstocks.
Key Features
- Locking tuner design: Helps secure the string for easier string changes and a more stable tuning setup.
- CNC-machined aluminum alloy construction: Made from aerospace aluminum alloy for precise structure and reliable hardware performance.
- 1:22 gear ratio: Provides smooth and accurate tuning adjustment for electric bass applications.
- Dopamine color finish options: Available in aluminum anodized finishes for custom bass builds and hardware upgrades.
- Multiple layout options: Choose from 1R, 1L, 4R, 4L, or 2R+2L to match your bass headstock configuration.
- Fitment reminder: Please confirm the Ø15.7 mm minimum headstock hole requirement, Ø12.7 mm string post diameter, and mounting screw position before ordering.
Technical Specifications
| SKU / Model | BBA-101 |
| Product Type | Bass Locking Tuners |
| Suitable For | Electric Bass |
| Layout Options | 1R, 1L, 4R, 4L, 2R+2L |
| Color / Finish Options | Aluminum Anodized Chrome, Aluminum Anodized Black, Aluminum Anodized Gold, Aluminum Anodized Green, Aluminum Anodized Red |
| Material | Aerospace Aluminum Alloy |
| Manufacturing Process | CNC Machined |
| Gear Ratio | 1:22 |
| Weight | About 78 g / piece |
| Overall Length | 77.95 mm |
| Overall Height | 42.4 mm |
| Housing Length | 19.3 mm |
| Housing Height | 30.7 mm |
| Mounting Base Width | 13 mm |
| Button Size | 40.2 mm |
| Minimum Headstock Hole Size Required | Ø15.7 mm |
| String Post Diameter | Ø12.7 mm |
| Package Includes | Varies by selected layout option |
Compatibility Notes
Important: Please confirm your bass tuner layout, peg hole diameter, post dimensions, and mounting screw position before installation. Bass headstock layouts may vary by model, production year, and factory.
Package Includes
- Package quantity varies depending on the selected layout option.
- 1R option: 1 x 1R with matching bushing, ferrule, and mounting screw
- 1L option: 1 x 1L with matching bushing, ferrule, and mounting screw
- 4R option: 4 x 1R with matching bushings, ferrules, and mounting screws
- 4L option: 4 x 1L with matching bushings, ferrules, and mounting screws
- 2R+2L option: 2 x 1R and 2 x 1L with matching bushings, ferrules, and mounting screws
Installation Note
Before installation: Compare the peg hole requirement, string post diameter, mounting screw position, tuner orientation, and headstock clearance with your original bass tuners to confirm compatibility.
Size Reference

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FAQS
Do you class a reverse headstock guitar as a left hand guitar?
How do I determine the right size/fit for a specific accessory?
Can you provide more details about the materials used in your products?
At Guyker, we prioritize the use of high-quality materials to ensure the durability and performance of our products. While the specific materials used may vary depending on the accessory, we commonly utilize materials such as:
■ Metals: We often use materials like stainless steel, aluminum, and brass for hardware, bridges, and other metal components.
■ Plastics: Certain accessories may incorporate durable and impact-resistant plastics such as ABS or polycarbonate for knobs, pickguards, and other components.
■ Woods: Some accessories, like guitar knobs or picks, may be made from various types of wood, including rosewood, ebony, or maple.
For more detailed information about the materials used in a specific product, we recommend reviewing the product descriptions or reaching out to our customer support team at [support@guyker.com] for further clarification.
Do you offer international shipping?
Yes, we offer international shipping to customers worldwide. When placing your order, please ensure that you provide accurate international shipping information, including your complete address and contact details.
Please note that international shipping may be subject to customs duties, taxes, and additional fees imposed by the destination country. These charges are the responsibility of the recipient and may vary depending on the country's customs policies.
What is your process for returning or exchanging a product?
To initiate a return or exchange, please follow these steps:
■ Contact our customer support team at [support@guyker.com] or visit our website's Returns/Exchanges page.
■ Provide your order details and the reason for the return or exchange.
■ Our customer support team will guide you through the process and provide you with a return/exchange authorization if applicable.
■ Follow the instructions provided, including packaging the product securely and attaching the necessary labels or documentation.
■ Ship the product back to us using a traceable and insured shipping method.
■ Once we receive the returned product and verify its condition, we will process the return or exchange accordingly.
Can I return or exchange a product if it's been used?
In most cases, products that have been used or show signs of wear may not be eligible for return or exchange unless there is a defect or error on our part. We recommend reviewing our specific return/exchange policy or contacting our customer support team at [support@guyker.com] to determine the eligibility of your particular product.
Do I need to cover the return shipping costs?
The responsibility for return shipping costs may vary depending on the reason for the return or exchange. In some cases, such as if the product is defective or if we made an error, we will provide a prepaid shipping label or reimburse your return shipping costs. However, if the return or exchange is due to a change of mind or a non-defective product, you may be responsible for the return shipping costs. We recommend reviewing our return/exchange policy or contacting our customer support team at [support@guyker.com] for specific details regarding return shipping costs.

Guyker BBA-101 Dopamine Color Bass Locking Machine Heads Tuner for Electric Bass
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