they probably and sadly dont sell any new ones anymore...
you have 5 options really...
1. find a generic/universal bumper... your best bet, as you will find many styles that you may like...
2. alittle harder to do, but get an 09 or so bumper. and adjust it as needed...like drill an extra hole, and such... it might be complicated to do if the bumper was not meant for your model (but a newer year)
3. find a bumper from another model that might fit, or modified slightly... this will be even more difficult to do..
4. make your own design, weld it yourself or get a welder to do it.. but hey... its going to be YOUR bumper tht you want... and you KNOW it will be strong...
5. not sure if its possible/aplicable in your case but the guy who welds up those sweet guru bumpers might fix you up with something...
i dont know the 450 sportsman model.. but if its the same as the older sports mans... the bumpers are for sale @
Hey! Looking for a front brush guard for your Sportsman Classic? Then Click Here! there afew afew more options... expanded metal and such... dont know if it will fit.. but its probably the most expensive variant.although it is worth every penny......