FYI I don't know if it's been posted here or not but the JT part number is JTF434.16. I've googled this part number and found it for sale at various websites. I will try them if my local shop can't get it.
http://www.jtsprockets.com/52.0.html...el_uid=1581&p=

I gave up trying to order one online. I've been trying since June. I ordered one from my local shop for 18 bucks and it should be here by wednesday.

The local shop said it is on back order with the distributor until sometime in October! If anyone knows where that actually have these in stock let me know.

ORDERING INFO!
 

BadBob started a new thread in the Mod's section stating that the JT 16T sprocket is discontinued and that Sprocket Specialists did have some. I did a little legwork on that and found out a bit more. Here is a copy of my reply in that thread for those of you who may be interested:

My Suzuki dealer's wholesalers couldn't find a 16T. I found the Sprocket Specialist's phone number on their website (www.sprocketspecialist.com) - 1-800-782-8200. They do have TWO left in stock, but they said they are getting more in next week. Their part number is: 528-16 Front Steel Sprocket (C/S)/Std/16 Teeth/For 520 Chain. Price: $21.99 + $6.26 S&H. They are currently out of chains (BadBob must have gotten the last one!). They don't stock the rear sprockets, but they cut them to order when you ask for one. The part number on the rear sprocket is #461 and the cost is $52.99 plus shipping.

I hope this helped. Thanks for the head's up BadBob!
-Bob
:tup:

correct url:
http://www.sprocketspecialists.com/

Mea Culpa!
 

:oops:
Darn those plurals!
-Bob

I've installed mine today and it's better than expected. 1st gear is no more useless and 4th is quite useful in highway, getting up to 78 mph. I've reached the same top speed than before at the same road; 81 mph.

Jaime, maybe you can do better than I did trying to explain how different it is. All I can say is that it's a different bike and I don't ever want to go back to a 16T sprocket. Congrats!!

Mike, do you mean you wouldnt go bact to the 15T or dont you like the 16T?

I've understood "going back to 15T"... Anyway, I think that my English is a bit limited to express my feelings about a sprocket. :oops:

The bike is simply smoother and not less powerful, but keep in mind that I've recarburated it, giving more fuel and air.
Also, the three first gears of the GZ250 are so short that they can be extended without any problems, only getting advantages. On the other hand, the change in 4th and 5th gear final ratios could be critical in some of your bikes.

I'm posting the Suzuki OEM part number for the 16T here too, in case anyone needs it:

#27511-37200