1. 1-1/8" head tube or 44mm head tube;
2, 142x12 OR 148X12 thru through dropouts;
3. external cable routing;
4. one inserted stocker seat tube and with big fat tire.
If you want to order a tandem, pls tell us the tire width, fork length, stand over, and other sizes, for example, head tube angle, such as that. The more, the better!
Contact me by Wechat: sophiatong123
or call me by 86-13186050961