The ROADLOK XRA-108R Revision 3 features a proprietary internal relief design developed by ROADLOK to provide compatibility with a wider range of 108mm brake calipers, including various Tokico applications. This unique design enhancement forms an integral part of the ROADLOK design and delivers optimal fitment, security, and ease of use. Its distinctive geometry and recognizable ROADLOK appearance reflect the innovative character of this original design.