Magura Gustav Handlebar Clamp Shiftmix Mixing That Shift Up The Magura Gustav Handlebar Clamp Shiftmix adapters allow a shifter to clamp directly to a Magura brake lever, expanding setup possibilities. You can combine either Shimano I-Spec EV or SRAM Matchmaker shifting levers and Magura Gustav Pro brake levers on just one clamp for a tidy look. The adapter can be screwed onto the existing clamp of the Gustav Pro. Features Options for Shimano I-Spec EV or SRAM Matchmaker Compatible with the Magura Gustav Pro The adapter can be screwed onto the existing clamp of the Gustav Pro | Magura | Gustav Handlebar Clamp Shitfmix I-Spec Ev Ig. 4 Right