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SM gearing

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06 DRZ400 SM

Well i do almost all my riding on the pavement. It is geared to low for my tastes when it comes to highway use. Has anyone tried or even found a 16 tooth sprocket for the front? I havent been able to find one but i know where i can have one made, will it fit?

Likewise i cant find anything smaller then a 41T for the rear. So basicly i have come to the conclusion that im pretty much screwed as far as gearing goes.

I bought a tach so i can see what kind of RPM's im cranking when im doing 70mph but it hasnt came in yet so does anyone know then answer to that question by any chance?

Thanks guys

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You 'can' make a 16 fit in the front, but you need to remove the case shield that is designed to protect the motor cases if the chain comes off. Which most would not recommend doing.

You can however find at least a 39 for the rear. Someone will chime in where they bought theirs from shortly I'm sure.

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The thread I've been waiting for for the last 48 hrs... bling is my middle name...

And make sure to keep BOTH your hands on the keyboard :thumbsup:

DRZ_09.jpg

http://www.sprocketspecialists.com/

Sprocket Specialist Titan Tough Ultra Lite Alloy 38 tooth rear sprocket

http://motosport.com/

DID ERV2 Xring Gold Chain

Tag Metals 13 and 14 tooth front sprockets

http://www.dual-star.com/index2/Brand/Suzuki/For%20Suzuki%20DRs.htm

Dual Star Axle nut

http://www.wheelingcyclesupply.com/index.shtml

Zeta chain guard

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Yep, got the sprocket specialist 38 tooth on my SM. Love it. Tried to go back to the stock 41 and that lasted for about 10 miles. With the 38 tooth I never shift into 5th unless I'm going at the very least 50mph. The effect on wheelie ability was minimal. With this gearing cruising at 65 to 70 is, in my opinion, the DRZ motor's "sweet spot". Plenty of passing power/throttle left and not buzzing like a mosquito.

WGW

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will it be the same part number as the S model? oh yeah and did you have to cut a link out of your chain?

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I didn't have to cut the chain, but it is extended about as far as I would want to go. I bought some axle blocks on ebay that helped a little, but if I had to do it again, I'd skip the axle blocks and just cut out a few links. The part number should be 452-38 for the plain jane aluminum one. Since now (after 1500 miles with this gearing) I know this is the gearing for me, I'll probably go ahead and buy a chain tool and cut out a couple of links.

WGW

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Part number 452-XX -where XX is the number of teeth. Mine is 452-38...

They work on all DRZ 400's (E / S / SM). Same 520 chain size and same spacing for the hub bolts.

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I have a 38 on mine as well and I think it is perfect for highway use. Now for the FCR and Muzzy. My wheelie ability was lowered...

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i have the 16t front sprocket on my 06 sm and the case saver fits fine just had to grind it down some checked it after 2 weeks no sign of rubbing.

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I have been following this thread and I think I would go with Sprocket Specialists 16 tooth.

Less wear on the chain if you go with a larger sprocket up front, chain does less flexing from what I understand.

TT store doesn't sell the 16 tooth from what I can see, am I looking in the wrong place?

Ron W.

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I am running 15/36 and it works great for hiway cruising but I lost some accelleration. If I had the FCR and a big bore kit, it would probably be perfect for overall street riding. I was thinking of going to a 13 counter for some fun backroad riding but could you imagine the chain stress on that setup 13/36? Would be curious to see how long that would last.

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Just got my SM and ordered a 38t vortex yesterday. Will report back on how the bike responds to the change with the motor bone stock.

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I just put a Sprocket Specialist Aluminum 39 tooth on my '06 SM. I didn't want to go to a 38 thinking I would loose a bit too much pull in 4th. The end result for me - at least it feels that way - is a much more useable 4th gear in the twisties. I also replaced the stock chain with a Regina ZR (520ZRH/120), removing six link.

Side benefit is the new sproket is way lighter, it's black and looks rad on the black SM and the gold chain looks sweet.

pixs at http://www.dwulet.com/bikes/400sm

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did any of you see an increase in gas mileage? Or otherwise?

i ordered a 16 tooth the other day, cant wait, however they told me that they stopped recommending them for the SM's because they were having problems with them hitting the swingarm. i told them to send it anyways and we would see. Can anyone confirm that? i know i will probably have to do some grinding on the case saver, thats acceptable.

Also im curious whether ppl have lost gas mileage after a jet kit and 3x3 mod? What about after a full system install? Just curious b/c i would love more power but i would like to know what kind of gas mileage increase or decrease i will see out of the mentioned mods.

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did any of you see an increase in gas mileage? Or otherwise?

i ordered a 16 tooth the other day, cant wait, however they told me that they stopped recommending them for the SM's because they were having problems with them hitting the swingarm. i told them to send it anyways and we would see. Can anyone confirm that? i know i will probably have to do some grinding on the case saver, thats acceptable.

Also im curious whether ppl have lost gas mileage after a jet kit and 3x3 mod? What about after a full system install? Just curious b/c i would love more power but i would like to know what kind of gas mileage increase or decrease i will see out of the mentioned mods.

after jet kit and 3x3 mod you'll lose fuel milage(i believe about 10mpg)with a fcr you get about 42mpg

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.....

Also im curious whether ppl have lost gas mileage after a jet kit and 3x3 mod? What about after a full system install? Just curious b/c i would love more power but i would like to know what kind of gas mileage increase or decrease i will see out of the mentioned mods.

SM,FCR-MX,YOSH FULL TI. (TEC-SB insert) 3X3.stock gearing gives me around 52 mpg commuting and 58ish on the open road. I don't think this is right, I didn't read it somewhere. It is what I get. Now the odo may have an error, but it is the same one that showed 60ish mpg with the stock carb (dynojet kit stg 2).

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I also have basically the same setup as Motor-N and last time I calculated it I was getting 59mpg. I am also looking to change my gearing and would rather go the 16t countershaft route instead of the rear for now. Once my cams and big bore are installed I'll likely keep the 16t and drop to 38t or 39t in the rear.

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I bought a 16T for my 06 SM and I SWEAR I couldn't get it to fit, it it possible it won't with the stock chain?

Any suggestions on a jet kit?

Anyone just try a jet/airbox without the pipe? I just love riding mine crazily pass cops who never look up because it sounds like a sewing machine stock.

Thanks!

Ben

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Not from personal experience, but, it is said that the 16t will fit if the case saver is modified. That seems risky to me. The air-box/ jetting mods are a step, usable on the way to full-blown high end exhaust add on, carb, cams and wallet limited mods. Eddie has shown, for example, slip-ons, and anything but the proper large header exhaust systems, get you mostly an increase in noise levels, and small if any performance gains, with the attendant weight reduction.

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i bought the 16t counter sprocket and it might fit on a S model with the case saver modified but it wouldnt fit on MY SM withouting grinding down on the swingarm as welll..... so im waitingb for my 38T rear to come in.

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