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CL6121 (G-133 – SILVER) CL3806 (G-133B – BLACK) TACOMA / TUNDRA


The GCI G-133 Tacoma/Tundra truck cap/lid clamp is a 2" aluminum cam lid mounting clamp that comes assembled with a silver or black finish and mounts fiberglass or aluminum truck caps or tonneau covers.

GCI Mounting Clamp G-133 is specific for Toyota Tacoma/Tundra caps and is for tops w/toolbox use bolt & slug only.

  • This style of clamp installs easily. Usually, can be installed without disassembling the clamp.
  • Do not overtighten your clamp. Maximum Torque not to exceed. 80-inch pounds of torque, 6.67-foot pounds of torque.
  • Recommended to tighten all clamps monthly, and that at least 4 clamps be utilized on short bed installations and at least 6 clamps be utilized on long bed installations.


Specifications from the figure above

A: (Clamping Range) 1 1/4” to 1 3/4”

B: (Clamp Major Reach) 2"