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Short question on AIS removal.

5 posts in this topic

Hello,

I am about to start working on a KeihinFCR off of a 2004 wr450f. I have been reading up on the ais removal mod, but the kits offered here in the TT store only specify for the 2005+ years. Will this kit work on an '04 carb, or do I need to look into the GTRY (?) kit from Yamaha. Thanks for any help.

http://shop.thumpertalk.com/product_p/int_thumpertalk_aissrk.htm

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I'm not up on the '04' but I don't think it has a AIS.

If I'm wrong, someone please correct me.

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You should call the TT store. I understand that they are very helpful.

I bought the GYTR kit (TT store please forgive me) and it appears from the description that pre-2005 may be different:

GYT-5TJ93-69-00 - Yamaha GYTR™ AIS Removal Kit Fits ''05~''06 WR450F @ $31.96ea. at

www.yamahasportsplaza.com

33003 Pacific Highway South

Federal Way, WA 98003

253-838-3290

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The AIS only applies to '05 and up. The '04 does not have it and is not green-stickered. Furthermore, the AIS is not part of the carb, though the kit includes some goodies for it. BTW, what are you doing with the carb?...SC

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Thanks everyone for all the fast responses. If there is no AIS, thats one less thing I have to deal with. Hopefully all I need to change is the throttle stop screw, and deal with the jetting.

I will be attempting to use this carb on a Suzuki vinson 4x4 atv. It is modified, and the stock vacuum style carb (keihin cvk) is proving to be difficult to keep it working good with all the mods. I think the cv carbs are good for epa emissions compliance, and fine for a stock bike, but not the best choice if your looking for best performance.

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