The Grover 135 Series Vintage Machine Heads are designed for players who want a classic look without the fragility often associated with older tuners.

Smoother Operation & Stability

Featuring traditional plastic Keystone (tulip) buttons and a warm nickel finish, these machine heads are a perfect aesthetic match for vintage-style electric and acoustic guitars. 

Unlike the stamped-metal covers of the past, these utilise a modern die-cast, two-piece housing that provides significantly more strength and internal precision.

While they look period-correct, the 135 Series benefits from a unique internal bearing surface. 

This design keeps the string post rigid, ensuring that the worm and gear stay perfectly aligned even under high string tension. 

The 14:1 gear ratio offers a familiar, responsive tuning experience that strikes a great balance between speed and accuracy. 

To ensure they last a long time, the gears are completely sealed and permanently lubricated, protecting the mechanism from the dust and corrosion that often plague vintage-style open-back or stamped tuners.

Lightweight Construction & Fitment 

At just 6.6oz for the full set, these are significantly lighter than standard all-metal Rotomatics, which can help improve the balance of guitars prone to "neck dive." 

They are designed to fit standard 25/64-inch headstock holes, making them a popular choice for modernising guitars with older, less reliable hardware. 

While they share the same main footprint as many other Grover series, it is important to note that a new top mounting hole will typically need to be drilled to secure the vintage-style housing correctly.

Grover 135 Series Vintage Machine Heads Features & Specifications

• Classic plastic Keystone (tulip) buttons for an authentic vintage look

• Durable die-cast two-piece housing for improved structural integrity

• 14:1 gear ratio provides smooth, traditional tuning control

• Sealed-in, permanently lubricated gears for maintenance-free performance

• Rigid string post design ensures consistent gear and worm alignment

• Warm nickel finish designed to age gracefully over time

• Fits standard 25/64 inch (approx. 10mm) diameter headstock holes

• Lightweight design at 6.6oz per set to maintain instrument balance

• Compatible with string gauges up to a maximum .074 gauge

• Direct replacement for Grover 102, 103, 106, 109, and 502 series (new top hole required)

• Complete 3+3 set includes all necessary nickel bushings and mounting screws