front sproket
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Tourer
Joined: Sep 2012
Posts: 336
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From: Queen Creek, AZ
front sproket
The highways run at a pretty quick pace here in Arizona I have an 04 EG, and would like to raise the gear ratio. Is it possible to get a larger front sprocket?
If so, what size is stock? I would like to go up 1 tooth, so I can keep the stock belt
If so, what size is stock? I would like to go up 1 tooth, so I can keep the stock belt
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
A change of just one tooth isn't worth the cost and there is no certainty you won't need a longer belt. Stock pulley is 32T. A 33T will lower rpms from 3,094 to 3,000.
Your cheapest solution is to wear ear plugs! The engine will be fine. You already have tall gearing courtesy EPA and raising it really isn't a good idea IMHO.
Your cheapest solution is to wear ear plugs! The engine will be fine. You already have tall gearing courtesy EPA and raising it really isn't a good idea IMHO.
Last edited by grbrown; May 18, 2013 at 09:25 AM. Reason: Corrected error!
Road Warrior
Joined: Oct 2006
Posts: 1,350
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bigger in front, smaller in the rear will lower rpm & will make it less zippy (for a better word). I dropped 4 teeth in the rear which would be more like doing 2 teeth on the front, with a rear pulley change from a 2007 1" belt & stayed stock with the front & used a belt that fit the 2007 136T. But with doing a cam change & putting true duals on I think my bike runs better than before. I think the 04's had F 32T & R70T 139T belt 1 1/8" wide belt. As for the pullies http://www.phatperformanceparts.com/...PULLEY&CartID=
I think 1 tooth on the front will drop your cruise rpms about 120 rpms. So if your rpms are 3K @ 80mph it would drop it to 2780.
If you look at the belt adjuster & see how much room you have for adjustment, might give you a better idea if you can run the belt you have now, if there is not much room to move it forward you will more than likely need a different belt.
I think 1 tooth on the front will drop your cruise rpms about 120 rpms. So if your rpms are 3K @ 80mph it would drop it to 2780.
If you look at the belt adjuster & see how much room you have for adjustment, might give you a better idea if you can run the belt you have now, if there is not much room to move it forward you will more than likely need a different belt.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
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