DRZ 400S 16 Tooth Front Sprocket??

[LeeU]

I have a 2001 DRZ 400S, with the standard 15/44 configuration. I had 14, 15 & 16 tooth front sprockets for both of my KLR 650's. I mainly switched to the 16 tooth front to lower RPM's on highway sections of my trips.

Does anyone make a 16 tooth front for a DRZ 400S? I'm planning on a 650 mile run to Moab on the slab and would like to lower the RPM's.

Any info appreciated!!

Lee Ullmann

Casa Grande,AZ:ride:

[cadams7346]

i looked when i got my 15 tooth and i could not find one the 15 tooth is a tight fit i dont think you could go any bigger than that it was a world of difference from the 13

[William1]

Driven Racing makes one that fits. It is tight, but it will work. Do a search using the key words "Driven+16".

[RiD3HaRD]

I got my 16 sprocket from

Forest. Wheelingcyclesupply.com

Like William1 said, you have to

Do a little modification to it to fit properly but it works.

[LeeU]

Thanks for the information!! I'll geet on it!!

It slows the engine down about 500RPM at highway speeds.

LeeU:banana:

[randomhero400]

just installed a 38 tooth rear sprocket with a fifteen on front what a big diffrence i would do this first before the sixteen ive seen them cut into the swingarm

[Craigo]

http://www.aviciouscycle.ca/drzsprockets.html

[IgorVigor]

I would prefer to fit a 41 rear to be honest....

Then offroad, a 14 front coupled to the 41 rear is basically equivalent to stock gearing...

I just run 14/47 on mine and have done

[cataway]

i have a 16T you could talk me out of , barely even used it . shoot me an offer

[LeeU]

Cataway,

Check your PM's.

LeeU

[William1]

BE aware, not all 16T CS are created equally. Some fit, some do not. The Driven racing sprockets are made with a slight undersize major diameter (the diameter where the tips of the teeth are) to aid fitting. They do not contact the swingarm. Thy do just touch the rubber chain slider slightly. Some of the others on the market hit metal to metal and should not be used.

[Drzclaud]

Another thing to BE AWARE of....if you allow your chain to get too loose, the chain will start eating away the case, ask me how I know. Also, my 16 Driven didn't contact the swingarm but I had to put a 1/4 inch grove on the rubber chain slider so that the gear would fit.

[William1]

A loose chain will not hit the case (esp. with a case saver on) but a worn out chain will

[Alexander Ortiz Maldonado]

On 8/20/2010 at 7:42 PM, RiD3HaRD said:

I got my 16 sprocket from

Forest. Wheelingcyclesupply.com

Like William1 said, you have to

Do a little modification to it to fit properly but it works.

What mods ?
 

[Tony Wyp]

23 minutes ago, Alexander Ortiz Maldonado said:

What mods ?
 

Buy a JTF434-16 front sprocket. Space it out 3mm with a big washer between the sprocket and the engine for the correct offset. Your case saver may hit the chain, but it will wear itself in.

 

Here is a pic of a chain derailment last week on my 16T.

Very little damage relatively speaking.

Next pic is with a new chain fitted, 24 hours later.

Edited January 21, 2021 by Tony Wyp

[Alexander Ortiz Maldonado]

29 minutes ago, Tony Wyp said:

Buy a JTF434-16 front sprocket. Space it out 3mm with a big washer between the sprocket and the engine for the correct offset. Your case saver may hit the chain, but it will wear itself in.

 

Here is a pic of a chain derailment last week on my 16T. 366.1 kB · 0 downloads

Very little damage relatively speaking. 366.1 kB · 0 downloads

Next pic is with a new chain fitted, 24 hours later.

I installed a sunstar today without knowing that it would rub, but when I rode it, it rubbed so badly with the swing arm that it made a dent. Could this have serious consequences ? 

[Tony Wyp]

3 hours ago, Alexander Ortiz Maldonado said:

I installed a sunstar today without knowing that it would rub, but when I rode it, it rubbed so badly with the swing arm that it made a dent. Could this have serious consequences ? 

You will have to provide detailed pics

Edited January 21, 2021 by Tony Wyp

[bucket list]

9 hours ago, Alexander Ortiz Maldonado said:

I installed a sunstar today without knowing that it would rub, but when I rode it, it rubbed so badly with the swing arm that it made a dent. Could this have serious consequences ? 

A dent in what?

I have run a 16 on and off for 6 years and never found the need to space out as Tony talked about. I have trimmed some of the rubber swingarm protector and ground about 2 mm off the tips of each of the 16 teeth, also totally eliminated the sprocket cover and case saver. My theory is that with a good modern o-ring  chain, rivet master, maintained well, your more likely to get struck by lightning then break your chain.

[ptgarcia]

How fast do you guys need to go that a 16-tooth front sprocket is needed? My street gearing is 15/41 and I can go faster than comfortable on a DRZ. Cruising at 70 mph is no problem. The bike is all over the place, but the engine is turning at a happy RPM.

[Tony Wyp]

1 hour ago, bucket list said:

A dent in what?

I have run a 16 on and off for 6 years and never found the need to space out as Tony talked about. I have trimmed some of the rubber swingarm protector and ground about 2 mm off the tips of each of the 16 teeth, also totally eliminated the sprocket cover and case saver. My theory is that with a good modern o-ring  chain, rivet master, maintained well, your more likely to get struck by lightning then break your chain.

Yeah i used to think that until a week ago too. (Note the destroyed case saver hanging down in previous pic)

The 16T I used ground the chain through my case 14 years ago, which spewed oil, because I had ditched the guard.. The 16T has a narrower boss than a factory sprocket and runs closer to the engine.

Having learnt my lesson, I have used a spacer and the case saver ever since. ?

I do like your idea of trimming the teeth ??

Edited January 21, 2021 by Tony Wyp