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Discussion Starter · #1 ·
I tried looking in the workshop manual as well as this forum and was unsuccessful in finding the diameter for the front drive shaft nut. I'm trying to change out sprockets and chain today. Any help is greatly appreciated as I need to go buy the socket. Calipers are telling me 1.425 inches ~ 36.195mm.
 

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I seem to recall using a 36mm socket with the rattle gun on it.
 

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Discussion Starter · #3 ·
36mm did the trick. Now for the next dilemma.

I purchased Renthal rear sprocket for an '03 Suzuki GSXR (520, 47T). It fits great. The reduction in width (525 > 520) is taken from the outside.

For the front, I purchased a Renthal for a '98 Kawi ZX-6R (520, 15T). On the box is shows it fits:
(ZX 600 G1-A1P ZX-6R '98 to '02)
(ZX 636 B1H ZX-6R '03 to '05)
(ZX 600 E11 ZX-6RR '03 to '05)
Where as the OEM teeth are centered on the sprocket, the teeth on the Renthal sit way in the back (or flipped, way in the front). The offset is off by approx ~4mm.

Will it work without causing premature chain wear? I've considered a spacer, but it would push the front washer off the splines which would allow it to twist with the nut rendering it ineffective.

Advice?
 

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is the old sprocket the original? I think if it is they were built with rubber dampers that made it extremely wide compared to aftermarket parts.

just looked at mine and the teeth are 3/16ish of an inch from the outside edge of sprocket, the toothed lock washer just clears the bevel on the end of the splined teeth on the output shaft. can't tell if it has same offset on back though.

just for info mine are JT sprockets for a 2000 GSXR600.

hope this helps alittle.
 

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Discussion Starter · #5 ·
yes, original. rubber dampners don't effect width.

http://www.jtsprockets.com/fileadmin/Code/images/large/jtf1182.jpg

Notice in the picture the position/offset of the teeth on the sprocket.

The '98 kawi zx-6r is NOT the same offset. The teeth are flush with an outer edge.

The ~30 sum posts on this forum recommending a '98 are incorrect. They should be recommending '95-'97 zx-6r for the front.

Live and learn.
 

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The ~30 sum posts on this forum recommending a '98 are incorrect. They should be recommending '95-'97 zx-6r for the front.

Live and learn.
Do you know if the parts interchangeable sticky thread mentions '98 instead of '95-'97? If you know where it does, it would be helpful to quote that and correct it for future reference.:)
 

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Do you know if the parts interchangeable sticky thread mentions '98 instead of '95-'97? If you know where it does, it would be helpful to quote that and correct it for future reference.:)
Yes, it probably does, and I'm the person who has been propagating the information. I bought one back when, and it fit fine. The package said it was for a '98 through '02, but who knows. If it's correct to use a '95 to '97 instead, then I stand corrected.
 

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I feel betrayed! Will's memory is not supposed to blur; I sense a conspiracy...:p
 

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Discussion Starter · #9 ·
I could stick the front sprocket on there, but it and the chain would wear prematurely and it would probably make a bit of clicking noise. It would be ~4-5mm off center.

As a kicker, Renthal has decided to stop producing the front sprocket for the S4 and '97 zx-6r (part number R363U-520-15). They still make it in the 525. When I spoke to Brad @ Renthal, I asked who would ever want to run a 525 on a 600cc? He didn't have an answer.

So currently, I'm sitting on a rear renthal sprocket for the '03 Gsxr and a GXW chain that I purchased at motosport. I was able to find old stock of the front sprocket at kneedraggers (and of course at a premium). $25 mistake.

From this point on, if you're in the market for aftermarket 520 sprockets, I would take Renthal off the list of manufacturers.
 

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Discussion Starter · #10 ·
On the parts swap page it shows '96-'98. On many many posts throughout this forum, it states both '96-'98 and '98-'02. I figured if someone remembered '98 twice, it must be right :rolleyes:.

The zx-6r years with correct offset are '95-'97.

Per the JT Sprockets page (ignore the part numbers, just look at the dimensions.)

S4
http://www.jtsprockets.com/fileadmin/Code/images/large/jtf1182.jpg

1998 ZX-6R
http://www.jtsprockets.com/fileadmin/Code/images/large/jtf1535.jpg

1997 ZX-6R
http://www.jtsprockets.com/fileadmin/Code/images/large/jtf1515.jpg
 

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Discussion Starter · #11 ·
Part of the problem is that when I ordered through motosport, they could not look up my manufacturer part number. I relied on the year/make/model.


Per the Renthal Website (notice the part numbers):

S4
http://www.renthal.com/File/fit_my_...EED FOUR&bikedate=2006&zone=USA&biketype=Road

'98 ZX-6R the one I ended up with.
http://www.renthal.com/File/fit_my_... (ZX-6R)&bikedate=1998&zone=USA&biketype=Road

'97 ZX-6R the one I need.
http://www.renthal.com/File/fit_my_... (ZX-6R)&bikedate=1995&zone=USA&biketype=Road
 

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They are VERY similar but according to JT, not exact matches.

JTF1182.XX is Triumph specific and as you can see by the pics has a very slight offset, where the JTF1515 ZX6-R version does not. Whether or not a .4mm (we're talkin less than half a mm here!) shift is significant enough to cause any issue is highly doubtful in my mind. Also note the slight difference in the inside spline diameter. However, keep in mind these are JT's specs and not neccessarily what other manufacturers may be using, I tend to think the spline interface and tolerances are important though, and shoudl match exactly.
 

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Oh.. one more thing. The aftermarket sprockets without the rubber damper are noisier than the ones with the rubber. I installed a complete JT set - 1182 and 1792. I was getting a slight ringing sound from the front. Switched to the triumph OEM version (3x more expensive BTW) and all was quiet again. I stick with OEM for the front sprocket from now on. Thats another reason to stick with 525.

Also, best price on chains I have found are at Sprocketcenter.com - and you can buy in 108 links and don't have to worry about cutting down a 120. I just bought the RK 525XSO. I tried the DID zVM2 last time, but was not really impressed for the extra price. It did not last any longer than the stock chain and was lubed religiously.
 

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It says '96 to '98? Then maybe I'm not going completely soft in the head. Well, probably. But, Renthal isn't the only sprocket manufacturer out there. I think I had Vortex and Sprocket Specialists on my TT600 at different times. The 675 and SV have Vortex on them, and I have pretty much settled on Vortex, partly because they sponsor my track fixes and partly because I have been very happy with availability of what I want. Other manufacturers make excellent products, too, so I don't think you can go wrong as long as what you get fits.
 

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Discussion Starter · #15 ·
Confirmed!!

Renthal 363U-520-15 is the EXACT 520 replacement needed which fits the '95 to '97 ZX-6R. Hope this saves someone trouble.

Will, be the standup guy that I know you are due to the great asset you are to this forum and change your posts on this.

Yak, they ARE exact matches. Regarding JTF 1515, just because no offset is illustrated, doesn't mean it's not there. Many of their illustrations are incomplete. Regarding the spline tolerance, as long as there is enough to fit trouble free, it's a perfect fit....which it is, you don't want any more free play then necessary. Regarding the Renthal webpage, this is the recommended part number for our S4's. ...and it's natural the rubber dampner would reduce noise...it's more rotational mass that also absorbs vibration...much like a dual mass flywheel on a car vs a light weight.

Good luck all.
 

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Will, be the standup guy that I know you are due to the great asset you are to this forum and change your posts on this.
Gawd, I'd have to find every post I said it! The information came from a sprocket I had on my TT600, but I don't remember now. It's been three years since I sold the 2000 and it's been almost four since I blew up the 2001.
 

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Will, be the standup guy that I know you are due to the great asset you are to this forum and change your posts on this.
Yeah Will, and while you are at it, fetch me my slippers and make me a cup of coffee.
 

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Yeah Will, and while you are at it, fetch me my slippers and make me a cup of coffee.
With milk or black and harsh like a real person? :p
 

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Discussion Starter · #19 ·
Come on now.....don't sound hurt. The whole point of a public forum is to share information.....correct as possible. Rather than doing my own research....I went by this forum....and it cost me an extra $25 bucks.....and that's like 5 cups of coffee.


BTW, I found a post of yours from 2005 that lists the proper dates. :D

If I could change your posts for you Will, I would. At least change it on the sticky parts swap at a bare minimum.
 

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Come on now.....don't sound hurt. The whole point of a public forum is to share information.....correct as possible. Rather than doing my own research....I went by this forum....and it cost me an extra $25 bucks.....and that's like 5 cups of coffee.


BTW, I found a post of yours from 2005 that lists the proper dates. :D

If I could change your posts for you Will, I would. At least change it on the sticky parts swap at a bare minimum.
Hurt? Nah, I'm laughing. After a few years, I stop being able to remember everything, and I sure don't know why the wrong dates snuck in there. It's one of those mysteries.
 
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