Can Step Bit be Used to Enlarge Frame Access Holes to Install Trailer Hitch on 2018 Subaru Crosstrek


what is the diameter that the 2 access holes need to be opened up to. Is it possible to use a step bit to accomplish opening the access holes? I have a step bit that can go up to 1 3/8 will that provide enough room for the block and bolt?


Expert Reply:

There isn't a specific amount that the access holes on the 2018 Subaru Crosstrek have to be enlarged to install Curt trailer hitch # C13382. But it isn't going to be much and you can use a step bit. That 1-3/8 inches is more than enough so only go as large as needed to fishwire in the blocks and bolts. I have linked the instructions and a video showing an example installation of the hitch for you.

If you plan on doing some towing I recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage bag.

If the ball mount kit does not have the right rise or drop to tow the trailer level, use the link I have included that explains how to measure to choose a ball mount to tow the trailer level.

And for trailer wiring you can use Tekonsha wiring harness # 118467 to add a 4-Way flat connector to the rear of the vehicle. I have linked a video showing how the wiring installs as well.

expert reply by:
Michael H

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