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Does yours hit the swingarm when you lift it up? I put the 13T on mine, and adjusted it to ~30mm. Anything higher and it seems to hit the swingarm when I lift it up, feels a bit too loose. So aimed for 25-30mm.
When I push up on the underside, below the rear edge of the chain slider, it just touches the slider at the rear edge. I set the free play to 1.250" (aprox. 32 mm) when the bike was new, and then re-set it to the same spec when I installed the 13T at 2500 miles. Now 9000+ miles on the bike and I haven't had to re-adjust it at all. I run the chain free play on my XR's to the larger side of the spec as well... seems to result in longer chain & sprocket life.
 

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I run the chain free play on my XR's to the larger side of the spec as well... seems to result in longer chain & sprocket life.
Ah okay. I re-set mine, about 25-26mm on tightest spot, around 30mm on loosest spot. Seems all right. :)
 

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Switched to 13t on front too. Really worth trying. I'll leave mine like that. Much more fun to ride. Set freeplay like with stock sprocket. Wish I would've switched earlier.
Thanks you guys for telling us what sprockets are available and can be used. Found mine on eBay for 13€.
 

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Are there any street benefits to going with an aftermarket chain? If so, what are the benefits and which chains are most highly regarded?
 

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Are there any street benefits to going with an aftermarket chain? If so, what are the benefits and which chains are most highly regarded?
Only if you go with a Non Oring for an extra half a Hp.
I noticed the difference big time with less rolling resistance.

Was an RK 520, only costs $50-$75

Just dont buy Chinese ANYTHING.
 
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Alright, thanks Aufitt. What do you think about D.I.D.'s claims for their "X-Ring"?
Everyone loves them, less rolling resistance I'm told.

But looking at your bike (pic of your gearshift rod), clean and well maintained...
If an owner knows how to lube a chain with chain wax every 500km and doesn't go off the tarmac or neglect it and treat it Indian style,
a non O ring will last ages on 23hp.

Back in the old days that all we had and they lasted 30-40,000km.

What I don't like about the cbr 250 chain is its so stiff and its size is overkill for a 250, its gotta rob power.
But if ppl would stop overtightening, it would outlast the bike lol.
 
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I got mine on Webike Japan.

I like it. I like the results on low rpm. It makes the bike vibrate more but still manageable, just had to get along with it and shift more than the usual stock settings.

 

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Just found out the sprocket I ordered is the wrong size (Renthal Steel Front Sprocket - 13T - 292-520-13GP).

Having trouble finding ones from Renthal on eBay. Can I get an update on sourcing one of these? Taking it down to 13t and just wanted something high quality for the added stress.

Thanks.
 
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