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DRZ Sprocket Situation

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I am currently running a 15/44 setup on my 2005 DRZ400S. I can cruise comfortably at 60 without getting the bike to wind out too much and i can hit a top speed of about 90 ish. I would like to go with a gearing that would allow me to cruise at about 65-70 without winding out the bike because i ride a lot on the interstate. I am not worried about dirt riding because i will just swap out sprockets. However, does anyone have any experience with a 38 on the rear or any sprocket smaller than a 44 on the rear. I found that sprocket specialists make a 16 for the front. Has anyone ever ran there stuff or used a 16 on the front. Thanks.

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In order to run the 16 on the front, you need to remove the case guard. (Or at least grind a bunch of it away.) This means that if your chain ever comes off, there is a chance it will bash a hole in the your case and you don't even want to know what it would cost to fix that. I'm pretty sure there are several people around here that have switched to the 16 on the front though.

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I run 40 on the rear, for the same reasons you do.

It pulls it, even on top with no problem

next time I'll go with 39 on the rear.

You'll need to take a link out of the chain though, which means your off road gearing will require a another chain.

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I am currently running a 15/44 setup on my 2005 DRZ400S. I can cruise comfortably at 60 without getting the bike to wind out too much and i can hit a top speed of about 90 ish. I would like to go with a gearing that would allow me to cruise at about 65-70 without winding out the bike because i ride a lot on the interstate. I am not worried about dirt riding because i will just swap out sprockets. However, does anyone have any experience with a 38 on the rear or any sprocket smaller than a 44 on the rear. I found that sprocket specialists make a 16 for the front. Has anyone ever ran there stuff or used a 16 on the front. Thanks.

I found this program. http://www.501.co.za/wr/Gearingcalc.xls

Don´t know if it works but you should get the theoretic max speed and maybe an idea of cruisingspeed.

I think a 38t on the offroad wheels will be to tall, try a 40-41t sprocket..

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I have the same bike and just tried a 41T rear. It does calm the r's down quite a bit on top. I removed a link from the stock chain.

I went back to stock gearing, as I felt it was a bit too tall for off road situations. Same old story, finding a happy medium is tough. I know what you mean, the stock gearing does scream on the highway.

I have that JT 41T sprocket that I used for 2 miles before I changed it back. If you want it for $20.00 if you pay shipping. I've got the stock chain also with the link removed with 3,200 road only miles for cheap if your interested. It's in good shape.

Thanks,

Joe

email is machzoutlaw@frontiernet.net

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I found this program. http://www.501.co.za/wr/Gearingcalc.xls

Don´t know if it works but you should get the theoretic max speed and maybe an idea of cruisingspeed.

I think a 38t on the offroad wheels will be to tall, try a 40-41t sprocket..

That is a usefull chart! I have done a lot of high speed tests ( using my gps)after changing gearing and wheels, the chart is close + 2, :thumbsup: but I bet the chart didn't consider wind drag or elevation.

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It was definately better, I'd say about the same r's as stock gearing @ 55 or close. I would not go any lower than a 41 Rear from other stories on the board.

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I don't think anyone had any problems, and the bike could probably pull a 38 but they are a high reving engine by nature so they don't advise gearing them that tall in general. SM gearing is 15/41 with a 17 rear wheel for a good reference. I do know that a 16 (anything larger than the stock 15) front is out of the question. Take the cover off and you will see. The 15 alone just fits.

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I found 15/41 on my '05 S was great for the street. Steel rear sprocket $18 from RM.

It's not listed for a DRZ 400. I cross referenced it .Mid '90's DR 350.Also the SM stock rear is a 41 I believe.

(RM= Rocky Mountain MC)or of course TT store.

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