I need to replace the top triple tree. Being 43 mm is very unusual for Harley aftermarket. If anyone has any insight On this, it is very much appreciated thank you

 

My 1981 YZ 465H's had 43mm tree trunks up front. Held almost a gallon of fork oil between the pair. Probably not what you're looking for but thanks for letting me reminisce for a moment.

Just think if your bike had a foot of travel....

 

 

It would probably be easier to have a new top tree milled up.
Than it is to find another one.
But I am still interested in who the manufacturer of this is

 

It would help to give us more details about your bike, also some more photos. Those forks are very distinctive, but there may be other clues on your bike that will help identify them. Is the frame a stock Harley one or custom, is the engine stock Harley or aftermarket?

 

It's all after market

 

It'll be cheaper to replace the whole front end.

 

When OCC had their show on tv they used a screw in top tree like that on nearly every build. You might want to give them a call IF they are still in business. Arlen Ness would also be a place to ask.

 

Here's the way I'd see it if it were mine.

The first one broke and you lived to tell about it. I wouldn't look for anything made by the same company. Unless it was my old ladies bike and I was tired of her.

I'd CL or Ebay the stock fork tubes and triple trees for pennies on the dollar.