Thread: Drilling holes for thru frame brake fittings

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Originally Posted by 32highboy54

What size hole do you drill for thru frame fittings ?

It would depend on WHICH fittings you plan on using.

I believe I would get out the micrometer and measure the diameter of the fitting and then drill slightly larger

Originally Posted by Deuce

It would depend on WHICH fittings you plan on using.

I believe I would get out the micrometer and measure the diameter of the fitting and then drill slightly larger

I agree with this - mine are 1/32" larger then my fittings which are Billet Specialties. Cances are that you can't drill the hole straight and this allows a bit of slop. I also put a SS flat washer under each side for just a bit more bearing area and so it wouldn't dig up the paint, now powder coat. You can just barely see that washer on my front end photo above.