Fox 2.5 Air Bump Stops with threaded stud mounting are a great way to improve the bottoming control of your suspension. 2.5 Fox Air Bumps provide tunable damping and spring force to adjust for the needs of your vehicle. A threaded stud on the end of the Fox 2.5 Air Bumps provides a simple and elegant mounting solution which can be incorporated into the chassis. Check out our Guide to Suspension Design For Going Fast in Comfort to learn more about selection and setup of Fox 2.5 Air Bumps. Improve your bottoming comfort and save your suspension with Fox 2.5 Air Bumps from AccuTune Off-Road.