if you lower, you should lower front and back the same amount. getting the front lower will feel more responsive but it will also be less stable...think sportbike here. many sport bikes need a steering stabilizer because of this maneuverability. tank slappers could become an issue with the lowered front. lowering the back and not the front will slow the steering..not sluggish, but kinda sluggish. lower the bike properly, but will also reduce clearance meaning pay attention to lean angles.
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