This is a frame rubber designed for the inside of the frame rail. It's the OTK Rear Bumper Internal Frame Rubber. The outside frame diameter sizes are available in 28mm (0066.A0), 30mm (0066.00), and 32mm (0066.B0). It offers a reliable solution for your kart's rear bumper frame.

Using this rubber is easy. Just place it inside the frame rail of your kart's rear bumper. Make sure it fits snugly. When handling it, avoid sharp objects that could cut or damage the rubber. For maintenance, clean it regularly with a mild soap and water solution. Store it in a cool, dry place when not in use to prevent it from drying out or cracking.