Originally Posted by
randomwon
For those wondering how to place dual drive shifters on dropbars. The solution is very simple. All you need is an accessory bar with a 31.8 mm clamp such as the evo spacebar pictured here. This allows you to slide the 27 speed grip shifter over the bar with plenty of space to spare with your handlebars. Ive had no problems with the shifter using this setup
The DualDrive works with mostly every triple shifter. You can use brifters, triggers or whatever you like. My Dahon Mu P27 for example, comes with X7 triggers, and the Speed Pro TT uses conventional road brifters.