BMX Products Inc.(1975–1985)

The company the started Many Brands, Mongoose, DeCoster & more.

Since the individual brands are SO iconic, we have them listed separately.

Ammaco

Blue Max = Iron cross on gusset 

Jag, or Jox/Jag = Solid gusset

https://bmxmuseum.com/bikes/jag_bmx/

Mongoose = Round hole

Moto Trac = Ton gusset

Racer's X = Super early model

Roger Decoster = Oval gusset

Check out this site for more!

http://www.vintagemongoose.com/frame/gussets.php