Hitch extension source?

You can find an 18" long 2" extension from online vendors lie Tweet'y, Curt, Reese, etc. The 2 1/2" extensions start at 24" and go up from there, so your choices are restricted unless you make something yourself.

What a problem to build one?
In California I had ACE Hardware Truck Accessories supply that had good selection of receiver tubing. Than you buy solid bar at fabrication shop and weld it.
Lot of such stuff on amazon.

If this supplier doesn’t have what you’re looking for.....it probably isn’t available.
https://www.etrailer.com

I got a 48” extension from Etrailer. Works great with towing my bass boat behind my TC

I know you want a solid 2-1/2" 18" extension. I've towed our 7,500 lb carhauler trailer many 10's of thousands of miles on a 2-1/2" X .25" wall 22" extension. Just something to consider.

http://allmetalsinc.com/hs2500.html

the 2.5" extensions fit into your truck receiver, but use 2" receivers on the trailer end.

I run a curt at either 36" or 48" depending on what I am towing.
With any tong weight I really recommend Weight Distribution hitch.
because my weight distribution receive is longer than my normal drop receivers I can can run my extension at 36" instead of 48. And the weight distribution really makes a difference. I had a set of 600lb bars laying around. I think the camper rides better with my 7x14 V nose behind it with Weight Distribution hitch then the truck does without the camper.

I just measure This ball mount that I bought last year.
From hole to hole it is 10.5". It is good cast mount, although rattling more than I like (Chinese sizes are always smaller).
So could you make it working?
Once you go above 2" sizing - things are getting expensive very fast, when choices gets limited.

YEAH YEAH YEAH. I want a SOLID 18 inch 2 1/2" extension. I don't want no stinking 2" tube or an adapter. I know it will work but....
Apparently a business opportunity for somebody.

TxGearhead wrote:
YEAH YEAH YEAH. I want a SOLID 18 inch 2 1/2" extension. I don't want no stinking 2" tube or an adapter. I know it will work but....
Apparently a business opportunity for somebody.

Just curious , how are you going to attach a ball mount to that solid extension ? Or are you talking about an 18" long ball mount ?

TxGearhead wrote:
YEAH YEAH YEAH. I want a SOLID 18 inch 2 1/2" extension. I don't want no stinking 2" tube or an adapter. I know it will work but....
Apparently a business opportunity for somebody.

Yuppp.... send an email to China.
That is where my Reese 2.5" ball mount was made.
You want it in 18,000 lb rating, or is 14 k going to be good enough?