Cheapest/easiest way would be to just swap on a trekking/butterfly bar. You could use all the other stock components,and you'd get plenty of hand positions plus be able to get aero. You'd just need the bar and some tape or grips.
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C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Brompton S6L/S2E-X/M6L-X/S12 T Line
