Yfz 450 shocks ???

They will fit the front if you have long travel a arms or some people use the lowering kit to fit them. There to long for direct fit. You can put one on the rear but it will jack it way up.
 
Make sure you purchase the correct front lowering kit, not the ones that say "not for heavy jumping" . The yfz450 front shocks are worth the $$$ off e-bay along with the 400ex rear shock, add the Ken Connor bushings, You will have a full adjustable suspension. You will think you have died and gone to heaven compared to stock Blaster shocks.