Aggressive yet Timeless. The classic “4R” icon shift knob cap features a white logo on a black background with TRD red stitching around the cap. The TrailMade shift knobs actually started because we printed this 4R logo on a set of shift knobs and had an overwhelming request for more. Well, here it is. The official Trail4Runner.com “4R” Icon. This cap comes with every transmission shift knob by default. With the TrailMade ecosystem of shift knob cap designs, you can run any design you want, and change them on the fly. This design is the first of its kind and is built for the mod-driven 4Runner owner in all of us. *Shifter Not Included. Please see your specific make and model page to purchase Transmission or T-Case shift knobs.