I recently got a 14t front sproked for my 400ex. I have tightened the adjuster all the way and the chain is in spec, but when i go ride for a lil bit it gets really loose. is that normal? I was also looking at the chain and i noticed some o rings missing and a few cracked ones. My question is what is a good chain to buy? Also with the 14t sprocket will i need to get a smaller chain than stock? (94) Is my adjustment all the way out just b/c my chain is so stretched out? Also will there be a noticable amount of power out of a new chain? Thanks for taking the time to read....

 

Well first if you just got a new sprocket for the front and are using the old chain and old rear sprocket you will ruin the front new sprocket your just got because it sounds like your chain is shot...if the teeth on the rear sprocket are pointed or are almost pointed I would recommend getting a new rear sprocket and chain...did you make sure you tightened the rear carrier back up after making the adjustments because if not the carrier will turn while riding and loosen up the chain...I would get the same length chain that you have now but just tighten it up using the carrier and here are 2 names for chaines (Regina and D.I.D)...Make sure you have the tools to take the old chain off and put the new one on you could just cut the old one off or get the chain breaker, get the special pliers for putting on the master link and make sure you clean the new chain off alot and keep it lubed up...any ?'s let me know

 

Yeah i tightned the carrier back up its in the same spot. When the chain cools its back to where it should be but when im riding it gets loose. But im def. gettin a new chain, also have u heard anything about RK chains? the rear sprocket looks ok. Thanks for the help!

 

Yea I have one on my ds 650 it seems like a good chain but I have a 530 o ring chain which is alot bigger but you will need a 520 and whatever the length is I am not sure what the length is for your bike but it seems good any of those 3 I would go with

here are a few sites
Rockymountainatv.com
Denniskirk.com
Bikebandit.com

 

It's a good idea to replace your chain fairly often and your sprockets now and then anyway, so I say just replace it all and start with a clean slate!

I like the DID X-ring chain and Renthanl sprockets. Just go to the Rocky Mountain catalog, and they have chain and sprocket guides for all the models. I would stick with the stock length if you can, so if you don't like the 14 then you can change it. And, it's a great help to get a set of chain tools, so you can get a chain that is to long and custom cut it to whatever length you like.

Also, if you can't keep the chain in adjustment, that is a sign that your rear bearings are shot, so keep that in mind if you keep having adjustment problems!

 

Ok thanks for the help. What i was saying about the adjustment is that when the chain is cool it has the correct slack, but after riding the slack increases (because the chain is shot?) then when the chain cools again it is back to the correct slack....

Also is it hard to change the rear sprocket? All this is pretty new to me, but Id much rather do the work/maintence myself and not taking it to a shop.