Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Can I install the "410 lbs" upgrade without installing the "310 lbs" upgrade? Same rods, right?
Document: This is a must have for anyone who works out on a regular schedule. Of course your going to need the 310 lbs. upgrade first. Fit right on the back of my rod box of my PR3000, if you have the groves on the back of your rod box and your rod box isn't covered by your frame you can upgrade to 410 lbs. Couldn't get an answer from Bowflex about upgrading to 410 lbs, guess they want you to buy the extreme 2 SE gym.
Great upgrade for bowflex ultimate, that only had 310 lbs of somewhat worn out rods.With these extra rods, I wont max it out anytime soon.It was easy to install and i reccomend this product.
It is fairly easy to install them, but directions would have been nice. The Extreme 2 installation instructions don't mention anything about installing extra rods either.I have found in working out that I rarely ever go with all the rods. I am no giant, but I am no small guy either. So your call on if you need to buy these. My advice would be to buy the 310 lb upgrade and see if you ever need more.
I specifically bought this as a 410# upgrade to my 210# system because of the reviews I read for the 310# upgrade being difficult to install. Upon receiving these rods with the slide on bracket I discovered that the bracket was slightly different than what I needed (it had two large slots that did not line up with my existing bracket), it did not fit.
I bought this upgrade to my 210# system because the 310# upgrades were sold out and I wanted the extra mounting bracket for a possible future upgrade to 410# for my old Power Pro XTL with lat pull down. I intended to install these new rods in the open spots the 310# upgrade rods would have gone in.
Bought both the 310 and 410 pound upgrades for my Bowflex Blaze, and was not disappointed. I had read other reviews that said these were not as stiff as the ones on their machine but I found the opposite to be true. These are very stiff rods and really take a good beating without losing shape or becoming bowed. Make sure you tie the bows after use with the velcro strap that comes with your Bowflex and these will last. Quality product built to last.
I ordered these earlier this year. The rods were extremely bent.I thought they would straighten out but haven't. They were an upgrade to the 310 lbs upgrade. I'll see if I can get a replacement, otherwise Bowflex is great.
Its not advertised to fit, but this fit on my bowflex pr3000 with no issues. I'd venture to guess this would fit any bowflex with the groves on the back of the bow rod box. Im now at 410# resistance. Could be a little cheaper. I mean its just some plastic rods. Easy to install as previous review mentioned. Just slide in groves and screw down. Not like 310 set where bow rod box had to be removed.
Note: If you are thinking about buying these, you need these first:Bowflex 310 lb. Rod Upgrade.Installation of the 410 lb upgrade is a lot eaiser than the 310 lb upgrade as these slip right on the back of your existing rod block and lock in place. The 310 lb upgrade requires you to remove your rod block and pop off the caps and screw them into the rod block from the bottom of the block.
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.
Answer: yes