I am trying to find the name of an 80's children?s book. It was a
series of books about a teenage dirt bike (motorcycle) gang in a
post-apocalyptic world. NOT Mad Max or Akira or anything mainstream,
more obscure. I remember one book in the series they came across a
city that was destroyed and glass was everywhere, and I think glass
might have been in the sub-title. I thought it was called "dirt bike
cowboys" or something like that, but that's not right.

Hello.

You're thinking of the "Turbo Cowboys" series by Tony Phillips.

See this description of the first book in the series:

"A teenage "Mad Max" story in post-apocalyptic America...
...Batt, Raider, Tech and J.J. are 4 post apocalyptic survivors who
were born inside a Government Relocation Camp...
...A trader of sorts, he bargains with the kids: Raider, who learned
how to be a mechanic in the Relo camp will fix the unused motor dirt
bikes in the garage of the hotel and as payment the Cowboys each get a
motor bike."
http://www.amazon.com/exec/obidos/tg/detail/-/0345351215/

As you mentioned, one of the books is about a "City of Glass"
http://www.amazon.com/exec/obidos/tg/detail/-/0345359259/

Some of the other books:

"Full Throttle"
http://www.amazon.com/exec/obidos/tg/detail/-/0345351231/

"Spark Fire"
http://www.amazon.com/exec/obidos/tg/detail/-/0345351258/

"Super Charge"
http://www.amazon.com/exec/obidos/tg/detail/-/0345351266/

---------
search strategy:
city glass cowboys
amazon.com, "turbo cowboys"

I hope this helps.

That was amazing. Exactly right and very quick. I looked for that for
weeks with no luck, and I know what I'm doing. Thank you jugglr-ga,
and thank you Google Answers. Reading this book and flashing back to
my youth will bring me great joy!

Thank you for the tip.
-juggler