1-1/2" motorcycle frame sidecar mount assembly with motorcycle frame shim. Zinc plated. CSC New Old Stock. I-bolt head is 1/2" thick and bolt hole is 3/8". I-bolt threads are 2-3/8" x 3/4"-16 tpi. The stud is very long, 2-3/8" on this I-bolt. It was made for the upper front sidecar mount on a Honda Goldwing 1500 frame to be able to reach thru the plastic cover on the motor. The frame shim is 3" long. The zinc plating is ruff from being in storage since 2010. Will also work on other motorcycles with a 1-1/2" frame. Can be used on sidecar frames as a adjustable sliding mount for the upper struts. This is a OEM NOS California Sidecar part # GW18.

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