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Old 03-26-2010, 10:59 AM   #1 (permalink)
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Default Need help w/ picking out sprocket and chain kit for 2001 zx7r

Hi everyone I am new at this whole thing. I have a 2001 ZX7R. I need a new chain and will need new sprockets soon. I was wondering if anyone has any input on what I should be looking for.

One of my buddies told me to buy this conversion kit online
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http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=220575538538&viewitem=&sspagename=STRK%3AMEWAX%3AIT
The sprockets are 15 teeth in front and 45 teeth in back. These are Vortex sprockets. The chain is a GB520XSO X-ring chain.
This set runs for $160 shipped.

I was wondering if this set is good or something else would be better for the money. I am also interested in a drive ratio of something that wont kill me on gas but will also give a little better acceleration than the stock.
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Old 03-26-2010, 11:54 AM   #2 (permalink)
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I believe there are tons of threads about the gear ratio....search is your friend lol...I remember hearing something about Vortex sprockets not holding up well. When it comes to chains/sprockets I would make sure I get a good set, you dont want a chain going out on you and slipping sprockets are not fun either. Hope that helps
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Old 03-26-2010, 12:15 PM   #3 (permalink)
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Personally, I would stay away from an Aluminum rear sprocket. They wear out fast. Stick with steel and it will last a LOT longer... and for the 520 conversion... unless you are hitting a LOT of track days, and riding at the expert/advanced level, you will NEVER notice the performance difference...

Gear it down some yes, thats a big difference. Drop a tooth on the front.

If you stay with a 525 chain, I have a rear sprocket (steel) posted in the for sale section. Brand new $30 picked up $40 shipped.

on my 97 ZX-7R I went down one front and up 2 or 3 in rear (cant remember). It killed my top end, and the rear Renthal was Shot in one summer. It was something like a 48 tooth, and had about 17 teeth left. Which also kills the chain... It was a true waste of money.
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Old 03-26-2010, 06:45 PM   #4 (permalink)
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I personally like leaving the front sprocket alone...go +2 rear and it will spunk up plenty.

I'd also stick to a 525 for a 750 or larger bike. And in that I'd also stick to a steel rear sprocket...just cause they are generally cheaper.

Aluminum rear sprockets last fine if you car for them...most people lueb they chain far too infrequently. The hard coated ones are better still...but I have a hard time paying 70 for one.

With some careful ebaying you can score sprockets cheap... I've landed more than one new rear aluminum sprocket for $20 shipped.

I'm a fan of DID chain over all else. Regina and EK next. Parts Unlimited has their own line of o-ring and x-ring chains that are suitable for the budget pinched buyer.
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Old 03-26-2010, 08:48 PM   #5 (permalink)
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What is the stock sprocket sizes for my zx7r?

So I need a 525 chain. I was told that the x-ring would be better fit for my bike. Also where could I find some good deals on a chain and good quality steel sprockets? I ebay a lot but I don't always trust myself at picking them out cuz I am not sure which ones are good trusted brands.

But if I would go with a Vortex Aluminum sprocket for the back and lube it once a week how long would that last?
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Old 03-26-2010, 09:01 PM   #6 (permalink)
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i just threw a vortex vhain/sprocket kit on my shit a month or so ago and am happy so far with it..bitch wheelies very nicely now, whereas it wouldn't with the 16/45 (and being STUPID low..)

when it wheelies a lowered bike with a clutch-up, it's a drastic change.

i try to stay away from aluminum sprockets, but this one is iok so far.

my shtios a 520 chain.. you don't need a 525 unless you just want to retain that size. you'll see such minimal shit from X ring to o ring .. the only benefit is the lube stays around te pins and sideplates a bit longer.. it's more longevity than performance. that was someone lying to you.

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Old 03-27-2010, 01:01 PM   #7 (permalink)
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So you are telling me to go with the 15/45 Vortex Sprocket kit and the GB520XSO X-ring chain for $160? How much will that effect my mpg?
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Old 03-27-2010, 03:07 PM   #8 (permalink)
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Quote:
Originally Posted by csaba1589 View Post
So you are telling me to go with the 15/45 Vortex Sprocket kit and the GB520XSO X-ring chain for $160? How much will that effect my mpg?

Don't really ride these things for MPG! It's more SMILES per gallon!

But, going from a 16/44 to 15/45 and keeping the revs low I went from a steady 48 mpg to around 42.

With 16/45 I net 45+ with an L model with kit cams, factory jet kit and full Ti Muzzy exhaust in all the scenarios.

Josh
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Old 03-27-2010, 07:57 PM   #9 (permalink)
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16/43 is stock.

JT, Sprocket Specialist, Sunstar, Vortex, AFAM, Renthal...the list goes on.
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Old 03-28-2010, 01:13 AM   #10 (permalink)
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i think my set is 15/43. other than easier wheelies, haven't really noticed a difference in mpg..
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