Fully Aluminum alloy CNC machined lightweight colourful derailleur, fixture and tensioner arm. For ACE Line frame, You do need a 3party rear wheel with multi-cogs compatibility to take over 4 speed cogs, not included. Compatible upto 28T cog (original max 18T on P/T Line) Titanium Tensioner Spring. Smooth surface treatment with multiple colours to match your style. Limited colour might only be available in 1st batch production. Listing only for one Parallelogram derailleur set (Spring activated main body, 2 Jocky wheels, fixture for ACE Line and extended tensioner arm included). Cogs, thumb shifter, shifting cable and 3rd party upgrade wheelset are optional. Tested 11-28t / 7 speed. Ideal combo with our X4 Unibody Cog Set (11-13-17-21t) to reuse original 2/6 speed rear wheel.
