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Old 05-29-2015, 01:53 PM   #1
Mudflap   Mudflap is offline
 
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Tao Tao ATA250-D rear sprocket

I picked up a slightly used 2007 Tao Tao ATA250-D sport-utility quad that is geared too high. Who really wants to go 50 mph on a little quad? I swapped out the OEM 15 tooth front sprocket with a 12 tooth (JTF 259.12) which made a huge difference but I'd like to lower it even more with a larger rear sprocket. Stock rear is 40 tooth so I'd like to find about a 45 tooth. Anyone know of a JT sprocket that will fit, or any source for a rear sprocket? Surely it's a copy of a common rear axle and flange but which model?


 
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Old 05-30-2015, 12:36 AM   #2
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Can you remove the sprocket for measuring? We might be able to find one with accurate dimensions.
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Old 05-30-2015, 02:59 PM   #3
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Center hole is 36mm. 6 bolt attachment on 56mm diameter circle. 428 chain size.


 
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Old 05-31-2015, 12:10 PM   #4
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Wow, that's a tough one. I haven't seen a 6-bolt sprocket with an ID that small. I took the time to look at several bikes / atv's on the JT site, but I didn't find a single 428 like that.
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Old 05-31-2015, 03:32 PM   #5
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Thanks for looking around Weldangrind. I've decided the stock rear sprocket is fine for now and new stock ones are available when it wears out.

Q


 
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Old 06-11-2015, 09:00 PM   #6
FLASHLIGHTBOY   FLASHLIGHTBOY is offline
 
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sprocket

check multinational parts or there is a lot of others
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Old 06-12-2015, 09:43 AM   #7
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I ordered a stock one to have on hand when the original wears out. Here are the measurements. Gearing is low enough with a 12 tooth front sprocket.



 
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Old 06-12-2015, 11:08 AM   #8
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Where did you find it?
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Old 06-12-2015, 01:29 PM   #9
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Ebay, $22.95 with free shipping. Also ordered a spare CDI from the same seller for $4.95 with free shipping. Thought the spare CDI I carry on the Zongshen 200 would work, same plugs, but the Zong uses a DC unit and the Quad uses AC.


 
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Old 06-13-2015, 10:46 AM   #10
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Do you have a link for the sprocket? It might help others. What did you search for?
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Old 06-13-2015, 08:49 PM   #11
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It just arrived today and looks to be correct. It was ebay item number 270906634498 from seller atv_parts_outlet who has an ebay store named Kidsatvparts. Can't remember what I searched for exactly but it was something like Taotao 250 sprocket. It says more than 10 more are available.


 
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Old 06-14-2015, 11:32 AM   #12
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Thanks for providing that info.
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Old 06-23-2015, 09:30 PM   #13
ChinaATVMods   ChinaATVMods is offline
 
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Whygostock sells the different size front sprocket and they can custom make rear sprocket for you as well.


 
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Old 06-24-2015, 06:45 AM   #14
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Front sprockets from 12 tooth on up are available from many sources, JTF259. Custom rears are always made of aluminum which doesn't hold up well. Does Whygostock make hardened steel ones?

13/40 is a good all round ratio for my use. 15/40 is stock.


 
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Old 06-30-2015, 10:08 AM   #15
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Here is a great link for sprockets.

http://www.outsidedistributing.com/category_s/489.htm


 
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