Recommendation for Chain and Sprockets?

[evil jose]

I'm going to need to replace mine soon and I'm wondering what you guys recommend and where to buy (would prefer locally if possible but have no problems ordering online). Also, what are the size of my sprockets? I'd like to start looking tonight but I'm not sure what size they are. I'm also -1 on the front. Thanks.

[stephen4785]

I think both of mine were renthal and a did chain(520 conversion) but I dont remember. I had Greg install all of the stuff and he got the parts.

[the spindoctor]

the size should be stamped on the rear and you can just count the front.

http://www.sumofallparts.net/ has pretty good deals on chain/sprocket sets and anything vortex. i still think the best sprockets out there are made by http://www.supersprox.com/stealth i had that on my old 750 for 10k+ miles and tons of passes at the dragstrip and i couldn't notice any wear at all. if you go with aluminum, just keep an eye on tension and keep it lubed up. i got lucky with this one. :eek:

[evil jose]

Thanks for the info. Any idea how hard this would be to do? Any special tools needed?

[the spindoctor]

its pretty easy.

-break front sprocket bolt loose (impact wrench comes in handy here)
-break rear sprocket bolts loose
-take off rear wheel
-cut off old chain with hacksaw
-put new stuff back on

the stock chain is riveted on, but it cuts pretty easy with a hacksaw. the new one will probably come with a clip style link like a bicycle. you can get the rivet link if you want, but make sure its put on right. they sell a tool to flair the pin so the side plate can't come off, but some people like to just use pliers or something like that. i'm not a big fan of doing it that way. the clip link is fine as long as its facing the right direction, and put some rtv on it so it can't work loose. its a good idea to order an extra clip just in case you lose or mangle it and nobody has one in stock. they're like $2.

[jyro]

Tsubaki omega oring and sprocket specalities aluminum rear and steel front. The absolutely toughest combo we ever found.

http://tsubakimoto.com/products/chain/drive_chain/motorcycle_chain.html

http://www.sprocketspecialists.com/

[evil jose]

Damn, not sure if I want to tackle that by myself :eek:

Thanks for the opinions everybody. I'm going to keep researching. Does $250 sound reasonable for replacing the chain and sprokets? That's parts and labor.

[sonicblue]

my YZ250 had a Masterlink from the factory. It's easy to do. Just make sure you get the bolts back on tight, and use a little locktight, It's ugly when they come loose!

[Super Coupe]

It's not to bad just get someone there who has done it before and you will knock it out in no time.

[Stangs 4 life]

$250 is way too much to change chain and sprocket. Shouldnt take more than 30 minutes, so find out the minimum shop labor charge. M/C shops live for folks who dont know what is actually involved with changing chain and sprocket.

Dont use a hacksaw, grind any one of the links outside plate smooth and pop the outer link plate with a screwdriver. After that, the rest of the link can be pushed out easily. Worst case scenario is that you might have to use a punch on the pin passing through the plate to break it loose.

It's a good idea to have at least 1 extra master link at all times, so stash one on your bike, the tools that came with your bike are sufficient to replace the master link in a pinch.

Last, watch out for aftermarket conversions to use a less expensive/different size chain. Stick with OE on the driven sprocket and do what you want on the rear. If an OE sprocket screws up your output shaft, you can at least talk to the dealer about it. They will have no sympathy whatsoever if your aftermarket sprocket ruins your engine.