Our JL Performance Yamaha Wide Band O2 Spacer Sensor directly replaces stock tail pipe section. It replaces original temperature sensor without modifying the stock exhaust pipe. No drilling, machining or welding necessary. Supplied billet tool enables easy installation and removal of Bosch O2 sensor. Stainless steel supplied for normal riding or racing use. Utilizes OEM gasket and hardware for installation. Manufactured from aluminum and anodized to prevent corrosion.