





Guyker Banjo Tuners - Firebird Tuning Key Pegs Machine Heads Replacement Part/s JBJ1000
SKU:Guitar tuner-JBJ1000-1piece
PRODUCT DESCRIPTION
Upgrade or replace your banjo tuner with a compact Firebird-style geared tuning machine. The Guyker JBJ1000 features a 1:4 gear ratio and straight-through configuration for banjo repair, replacement, and custom instrument projects.
Key Features
- 1:4 gear ratio: Provides controlled tuning adjustment for banjo setup and maintenance.
- Firebird-style straight-through design: Offers a compact tuner profile suitable for compatible banjo-style instrument applications.
- Multiple package options: Available as a single tuner or a 4-piece set depending on your replacement or build requirements.
- Detailed mounting dimensions: Includes clearly defined shaft, body, bushing, and button measurements for fitment checking.
- Fitment reminder: Please compare the tuner shaft, bushing diameter, body dimensions, and available mounting space with your instrument before ordering.
Technical Specifications
| SKU / Model | JBJ1000 |
| Product Type | Banjo Tuning Machine |
| Suitable For | Compatible Banjo, Ukulele Banjo, Tenor Banjo & Plectrum Banjo |
| Tuner Style | Firebird-Style Straight-Through |
| Gear Ratio | 1:4 |
| Button Width | 23.6 mm |
| Main Body Diameter | 17 mm |
| Upper Shaft Diameter | 9.5 mm |
| Lower Shaft Diameter | 6 mm |
| Shaft Length | 22.3 mm |
| Bushing Outer Diameter | 13.8 mm |
| Bushing Body Height | 12.6 mm |
| Bushing Overall Height | 14.8 mm |
| Hex Size | 10 mm |
| Packaging Options | 1 Piece / 4 Piece |
Compatibility Notes
Important: Tuner dimensions and peg-hole requirements may vary between instruments. Please confirm your instrument's peg hole diameter, shaft clearance, bushing dimensions, and available headstock space before installation.
Package Includes
- Package quantity varies depending on the selected option.
- 1 Piece option: 1 x JBJ1000 tuning machine with matching mounting hardware
- 4 Piece option: 4 x JBJ1000 tuning machines with matching mounting hardware
Installation Note
Before installation: Compare the tuner dimensions with your existing hardware and confirm that the shaft and bushing dimensions are suitable for your instrument. Minor modification may be required depending on the instrument construction.
Size Reference
Important: Please refer to the original size chart below and compare all dimensions with your existing tuner before ordering.

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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 Banjo Tuners - Firebird Tuning Key Pegs Machine Heads Replacement Part/s JBJ1000
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