NRG Silver Short Shift Knob Weighted Threaded - SK-450SLMETTA SHORT SHIFTER WEIGHTED While we did design this shift knob to pair well with an SSK or Short Shifter Kit, we find that it works beautifully on any shifter set up. With the perfect weight at just less than a pound, and a 3. 5" height, it's right at home in the hand. 3. 5" tall . 80 lbs Universal threaded inserts included NRG Innovations Products are designed for off road use only. Keep it on the track.