Converts Sun E350 Electric Trike models to 7-speed gearing for improved performance and ease of useIncludes all necessary parts for the conversionKit includes:SunRace M30 7-speed twist shifterSunRace M40 7-speed direct-mount derailleurSunRace M3 7-speed freewheel (13-15-18-21-24-28-34T) with 15mm trike axle adapterHigh density black foam grips, 92mm left side / 130mm right side36T x 1/2` x 3/32` chainring with alloy crank armsK.M.C. Z51 1/2` x 3/32` chainKit only compatible with Sun E350 Electric Trikes with 3-piece cranks7 Speed ConversionFits E350 Electric TrikeUPC/EAN/GTIN: 888571076576