Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This upgrade is NOT for the Power Pro or original Motivator...

Per the Amazon description:"Product Features100 lb. rod upgrade; 2-50lb rods, attachmentsBoost your total resistance to 410 poundsFor Ultimate/Ultimate 2, Motivator, Xtreme/Xtreme 2, Sport, Blaze and Power Pro Bowflex Fitness Machines310 pound upgrade required before upgrading to 410 poundsNo-Time-Limit Power Rod warranty"This kit will NOT fit the original Power Pro or Power Pro XTL. The power rod box on the original Power Pro has a different v-shaped groove pattern from the square pattern that the bracket of this 410 lb upgrade kit. According to Bowflex, the 410lb upgrade kit for the Power Pro is no longer available. If you need 100lbs of resistance rods, though, for $73 this is still the least expensive way to get them. It appears that there may be some aftermarket solutions for upgrading higher than 310 lbs on the original Power Pro now, but you still need to buy the rods.