For the extra bit of style and performance, add a Kartboy Shift Knob to your Kartboy Shift Lever (works with the stock lever as well.) This computer designed and CNC turned Aluminum knob fits the hand with comfort, but allows a firm grip for crucial shifts.  No set screws or cheezy adapter sleeves to add, it is internally threaded.  To top it all off, a tasteful Kartboy Shift Pattern Emblem is included in 2 Colors.