Magura Shiftmix 4 Handlebar Clamp – Shimano I-Spec EV Left.Magura’s Shiftmix 4 adapters are their MatchMaker line of adapters. This is specifically for use with a I-Spec EV compatible dropper on your left Magura brake.Compatible with Magura MT8, MT7, MT5, MT4, MT Thirty, MT Sport, MT eSTOP, MT Trail Sport, MT C5, MC, and more Magura brakes.NOT COMPATIBLE WITH GUSTAV PRO BRAKES.To adapt your MatchMaker compatible dropper lever to a Magura brake, use Shiftmix 3 adapters.