The illustrated oil pump belongs to the STX-15F engine that was heavily modified from SE in Japan in order to accommodate a dry sump oil system and shave space from the 15F crankcases. Note the superior craftsmanship and fine quality of the machining process. The particular modification was done in order to place the 15F, four-cylinder engine inside the SX-R engine compartment. The job was done successfully. Take a look at the additional pictures that have added to the story published under the section Features.
