The 5-valve Yamaha 450 is a reliable motor, but water pump failures seem to be relatively common. After being black-flagged and kicked off track during a race due to a leaking weep hole that became more than a startup-only problem, Kettering Formula SAE is considering having a batch of water pump shafts 5GR-12458-00-00 hard chromed and ground to the proper size. This part is common for all WR, YFZ, and YZ 400, 426, and 450's except for the new YFZ450X/R. Would anyone be interested in buying a lifetime water pump shaft if we were to offer them for sale? If you put lots of miles on your bike and ride far from camp/home the extra insurance this piece can offer could be well worth the investment. If you race under a sanctioning body that mandates water-only cooling (like FSAE where two teams have failed 2011 WR450f water pump seals in less than a season of development) or one that is sensitive to fluids being leaked on the track, this piece can make the difference between a test day lost due to seal and shaft replacement or a race DNF and success.