3D-printed adapter that converts the stock half-twist throttle on the Revv1 DRT and FS to a full-twist. Slides under the throttle tube and changes the range of motion internally — no external hardware, no cutting. Revv1 DRT and FS only - not confirmed on any other model. Do not order for other bikes. Glue required, not included - apply to the mating surface and allow full cure before installing the grip. Rushing the cure is the most common install failure. ODI grip compatible - designed to fit with an ODI grip slid over the top after install. Other grip brands may vary. Visible layer lines - printed part, not injection-molded. Surface texture is normal for the material. Snap-back caveat - if the throttle doesn't return cleanly after install, check bar alignment and confirm the bars aren't bent before assuming a part defect. What's in the box:1x full-twist throttle adapter (3D-printed, made in the US)