Well I have found both for a good price. The yfz are cheaper and all stock. Where the works are set to me and refinished . There is only about $70 dollars diffrent in price. But would I ever feel the diffrence ? I only trail ride and not real fast . I know some of you are like why even buy shocks if your not going fast. Cause these stock ones beat the sh*t out of you even going slow. The 450s ill have to mod one of the mounts to make them fit with out lifting the quad the works just bolt in. What to do what to do???? What would you buy.