The particular 15F engine was especially modified in order to fit inside the X-2 engine compartment. Initially the oil pan was removed and an oil pump was installed up on the front engine cover. It supplies oil via a Dry Sump configuration. SE expertise fabricated the oil pump, oil tank, exhaust pipe, oil catch tank the fuel tank and the engine bottom cover. They also modified the exhaust header though they kept stock X-2 waterbox. The craft features stock, throttle body, ECU and waterbox. According to Toru Tanaka of Jetwave He made a machine of the Kawasaki quality to let Kawasaki make it.
