R407       *Bumper weight limit. Each set of Bumpers (including any fasteners and/or structures that attach them to the Robot) must weigh no more than 15 lbs. (~6 kg).

R403       *Bumpers shouldn’t move. Bumpers must not be articulated, relative to the Frame Perimeter.

R401       *Bumpers should protect all corners. Robots are required to use Bumpers to protect all outside corners of the Frame Perimeter. For adequate protection, at least 6 in. (~16 cm) of Bumper must be placed on each side of each outside corner (see Figure 9‑3) and must extend to within ¼ in. (~6 mm) of the Frame Perimeter corner. If a Frame Perimeter side is shorter than 12 in. (~31 cm), that entire FRAME PERIMETER side must be protected by a Bumper (see Figure 9‑4). A round or circular Frame Perimeter, or segment of the Frame Perimeter, is considered to have an infinite number of corners, therefore the entire frame or frame segment must be completely protected by Bumpers.

R405       *Bumpers indicate your alliance. Each Robot must be able to display red or blue Bumpers to reflect their Alliance color, as assigned in the Match schedule distributed at the event (as described in Section 11.1 MATCH Schedules). Bumper markings visible when installed on the Robot, other than the following, are prohibited: