I'm not sure what you are hoping for. The shutter is not in the lens, but rather in the camera. A lens can't increase the maximum shutter speed of the camera itself unless it had it's own independent shutter. I'm not aware of any such lenses.
Speed Boosting adapters are not used to increase the maximum shutter speed of the camera, but rather to focus more of the light gathered by a full frame lens on to a crop sensor, thus allowing a faster supported shutter speed to be used. For example, perhaps rather than needing 1/60th second for an exposure, the same exposure can be accomplished in 1/120 seconds.