18" BTL with "ufo" style motor question

[btl_Co 0]

What are some specs on the ufo style btl 18"? As i cant ind them on the fi site. It was built in 2009,fully loaded dual 1 ohm,got it from a guy that never used it,still in the crate..my main question is what is the xmax on this style btl and are these still in production?? Any input is greatly appreciated..thanks!!

[Sencheezy 689]

No, they are not still in production. I believe xmax was in lower 30s.

[Duran 387]

31 mm.

[btl_Co 0]

Ok thanks for the response..and also were the ufo btl's available with a daily or spl option?