Re: First Build GT2-A frame [PICS INSIDE]
It's an 18" frame. Seat tube is 18" from center of crank to center of top tube, and 20" from center of crank to top of seat tube. ID of seat tube is 27.2 mm, OD is 30.8mm. Kings/Gasbike in the sidebar carry both the GT2A and GT2A-S (straight down tube) frames.