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SKU:RTS-Guitar Tuners-GK-55GSP-IV-6R
PRODUCT DESCRIPTION
Upgrade your ST or TL style guitar with a stable 6R locking tuner set. These locking tuning machines feature a 1:15 gear ratio and are designed for compatible 9 mm tuner peg holes.
Key Features
- Locking tuner design: Helps improve string changing efficiency and tuning stability for compatible electric guitars.
- 6R layout: Designed as a 6-in-line right-side tuner set for standard right-handed ST / TL style guitars.
- 1:15 gear ratio: Provides smooth and controlled tuning adjustment.
- 9 mm peg hole fit: Made for guitars with compatible 9 mm tuner mounting holes.
- Fitment reminder: Please confirm your guitar’s peg hole diameter, post height, and mounting screw position before installation.
Technical Specifications
| SKU / Model | GK-55SP-IV |
| Product Type | Locking Guitar Tuners |
| Suitable For | ST / TL style electric guitars |
| Layout | 6R |
| Gear Ratio | 1:15 |
| Peg Hole Requirement | 9 mm |
| String Post Diameter | 6 mm |
| Bushing Outer Diameter | 6.2 mm |
| Max String Gauge | 1.8 mm |
| String Thru Hole Center Height | 22.5 mm |
| Cap / Post Top Height | 15 mm |
| Housing Length | 29.2 mm |
| Housing Width | 16.6 mm |
| Button Length | 17.5 mm |
| Button Width | 13.6 mm |
| Bushing Type | Screw-in head |
| Weight | Approx. 35 g per piece / 216 g per set |
| Color / Finish Options | Gold, Nickel |
| Package Quantity | 6-piece tuner set |
Compatibility Notes
Important: Please check the measurements of your guitar before ordering. Minor modification may be required depending on the guitar model, production year, or existing hardware.
Tuner fitment reminder: Please confirm your guitar’s peg hole diameter, post height, and mounting screw position before installation.
Package Includes
- Package includes one complete 6R tuner set.
- 6 x locking guitar machine heads
- Complete mounting hardware
Installation Note
Before installation: Compare the tuner dimensions, peg hole requirement, post height, and mounting screw position with your original tuners to confirm compatibility.
Size Reference
VIDEO
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.

Ready to Ship (US) | GK-55NSP-IV Lock String Tuners Machine Heads For ST TL Guitar
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