3+3. 

The 136 Series features a die-cast, two-piece housing for additional strength and precision. The unique bearing surface in the housing ensures string post stability, enhancing the alignment of the gear and worm. Designed with a classic rounded button made popular in the 1950’s.

• Sealed-in, lubricated gears

• Die-cast housing

• 14:1 gear ratio

• 25/64” post hole

• Post length to hole: 23.6mm

• Overall post length: 28.9mm

• Weight per pc/per set: 1.1oz/6.6oz

• Max. string gauge: .074”

• Hardware included (bushings, screws)

• Drop-in replacement for:
*Note: New top mounting hole will need to be drilled

102-18 Series

102V Series

103 Series

106 Series

109 Series

109-18 Series

502 Series

509 Series


For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.