ØK&N JET KIT. Ø ØK & N\'s ATV Jet kits are a premier carburetor recalibration kit. Ø ØDesigned to fit the most popular ATV vehicles. Ø The ATV Jet kits incorporate the latest technology in carburetor jet kit art, delivering a superior level of performance found only in expensive racing ATVs. Ø The Jet kit will improve throttle response, yet maintain optimum fuel economy. Ø ØEach ATV Jet kit contains all you need: Complete recalibration jet kit, including jets, needle, spring, shims and detailed instructions.