Joined: Feb 2012
Posts: 19,352
Likes: 5,469
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
"A" and "B" are generic terms not specifically bike ones. In this reference "A" might be the steerer's length and "B" might be the threaded top portion of the steerer. Really though more initial data reduces the guessing we can only do at this point. Andy
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AndrewRStewart