The later Harley-Davidson models come with a TPMS (Tire Pressure Monitoring System) built into the wheels. This TPMS bracket fits the existing valve stem inside your custom wheels. It allows a bolt-on installation of the OEM 42300118 / 42300119 TPMS sensor to retain full TPMS functionality. Complete with bracket and required hardware. Weighs approximately 0.05 pounds. Note: Does not include the TPMS sensor or valve stem. We recommend this installation be done by an experienced motorcycle mechanic.