TA-25 This kit includes mounting adapters for both front and rear Transceivers on Yamaha FJR models. The adapters are designed for easy installation on existing hardware. No drilling or modification is required. Rear adapter mounts on 8mm stud of the swing arm Front adapter is a modified caliper bolt There is a 5mm stainless steel dowel pin press-fit in the adapter which is used to mount the Transceivers facing the wheel. A nominal air gap of 1/2" (12mm) or less allows the short range communication between the Transceiver and the Wheel Sensor. Each adapter includes detailed step-by-step instructions.