Sprockets - Who makes the OEM sprockets?

[seashepherdave]

Hi everyone,

 

Great to see forums are still alive and well on the internet and havent been completely ruined by social medias. I've found myself visiting more and more to see what you're all farkling.

 

For my first post here in this community it's a simple question: Who makes the OEM sprockets for Yamaha's T7?

 

I noticed Sunstar make the rear. Just wondering if anyone's got a old OEM front they can peel off the rubber and identify who makes the front?

 

Cheers!

[Samm]

Mine was thrown into the scrap metal bin a long time ago. Why the curiosity? Are you trying to buy OEM while avoiding the OEM price tag?

[Dougie]

Welcome @seashepherdave.
I don’t think I’ve ever put brake pads or chains/sprockets from OE on any of my bikes. Too expensive and not as good as aftermarket. Sprockets I usually go renthal, and only ever fit EBC brakes. Tyres, I think if a manufacturer has selected a tyre, it’s for good reason and not just thrown on. Cars and bikes. 
more/slightly different answer than you asked for I know. It’s Saturday.

Edited August 10 by Dougie

[Peen]

I had a look at an old one I had laying about, even peeled some of the rubber off, couldnt see any markings other than the BW3 which is the Yamaha part number prefix for the tenere 700.

 

Short answer: Dunno, probably sunstar

[seashepherdave]

20 hours ago, Samm said:

Mine was thrown into the scrap metal bin a long time ago. Why the curiosity? Are you trying to buy OEM while avoiding the OEM price tag?

Hi Samm,

 

Purely curiosity.

 

Years ago some of us were wearing out our counter-shaft splines on our Transalps/AT’s due to the aftermarket’s being a bad fit, too hard or some even suspected some galvanic exchange. Some of us elected to using OEM sprockets, others, like me, decided to weld after market sprockets to the countershaft to delay the inevitable engine split.

 

15 hours ago, Dougie said:

Welcome @seashepherdave.
I don’t think I’ve ever put brake pads or chains/sprockets from OE on any of my bikes. Too expensive and not as good as aftermarket. Sprockets I usually go renthal, and only ever fit EBC brakes. Tyres, I think if a manufacturer has selected a tyre, it’s for good reason and not just thrown on. Cars and bikes. 
more/slightly different answer than you asked for I know. It’s Saturday.

Hi Dougie, the T7 uses a Sunstar rear. Just because Yamaha decided to use Sunstar sprockets it seems an odd reason not to use them. Sunstar make excellent sprockets.

Good luck with your adventures with one tyre choice.

 

12 hours ago, Peen said:

I had a look at an old one I had laying about, even peeled some of the rubber off, couldnt see any markings other than the BW3 which is the Yamaha part number prefix for the tenere 700.

 

Short answer: Dunno, probably sunstar

Hi Peen, thanks for doing that for us. If there’s no markings under the rubber and all we have is BW3 it might actually be manufactured in-house?

[Samm]

I understand completely! The DRZ400 crowd had a similar issue. The common solution was a drop of red locktite on each spline when installing a new sprocket. Seemed to help but made the next sprocket swap a bit of a pain! 

[Peen]

I have to say, I do rate the OEM front sprockets, whoever actually makes them, I got 17,000 miles from the original chain and sprockets and I've heard of people getting more, but the JT fronts ive used since barely reach 10,000 before looking knackered.

 

Plus, for some reason, all the JT front sprockets I used were a really tight fit on the splines, to the point where they almost needed pressing on whereas the OEM are a nice sliding fit as they should be.