please help what size sprocket

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please help what size sprocket

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please help what size sprocket - 5/7/2006 10:02:50 PM

cope1313

Posts: 12
Joined: 4/29/2006
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hey i just bought my cbr1000rr this week great bike but not much low end power. but i will say after it hits 3000rpm its crazy fast. im tryin to improve on that i was just thinkin bout changing the rear sprocket. i was wondering if anyone had any input on what size... i heard 42 in the rear would be a good choice... or should i just get a 520 conversion,

Post #: 1

RE: please help what size sprocket - 5/7/2006 11:18:34 PM

Repsol_Thom

Posts: 91
Joined: 10/7/2005
From: Greensboro, NC.
Status: offline

I haven't done any gearing changes to my bike but I have seen some threads about going to a 42 or 43 rear, but if you are looking for stand up off of idle low-end power, go down 1 on the countershaft sprocket. I think that the comparison is, if I remember correctly, going down one tooth on the counter is like going up four points on the rear. Typically, at least from my motocrosser and go-karting experiences, going down one on the front will give you killer acceleration. All depends what you are looking for. You say that you like how it pulls from 3k on so you may not want to give that up. Let's see if anyone else puts their two cents in.

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RE: please help what size sprocket - 5/7/2006 11:29:00 PM

jcf1977

Posts: 187
Joined: 8/17/2005
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Went with a 43 on the rear and can't say why I didn't do it sooner......I love the diff it makes, it's huge! Pulls like a BIOTCH!!!!!!

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Post #: 3

RE: please help what size sprocket - 5/8/2006 8:09:12 AM

Anubis

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Joined: 6/27/2005
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16T Front (Standard) with 42T Rear for the Street, and 46T Rear for the Track.

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RE: please help what size sprocket - 5/9/2006 12:56:38 PM

cope1313

Posts: 12
Joined: 4/29/2006
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hey guys thanks for the input... i decided to get a 42 and see how i like it..... i should be getttin it this thrusday.

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Post #: 5

RE: please help what size sprocket - 5/9/2006 4:45:45 PM

Anubis

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Good choice

the good thingabout that also is you don`t have to add or loose any links from the chain

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RE: please help what size sprocket - 5/9/2006 4:53:50 PM

geepaks

Posts: 57
Joined: 9/7/2005
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If you do express way riding I would recommend a 42 rear (stock is 41). I changed to a 42 and am happy with it - allow the bile to run at approx 5K RPM at 80-ish.

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RE: please help what size sprocket - 5/9/2006 8:31:02 PM

cope1313

Posts: 12
Joined: 4/29/2006
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i thought stock was 40.. or at least thats what the store i bought it from said.... also wont i need to get a speed healer... and if so where and what brand would be a good one...... i will say i rode a 01zx9r last year and never again.. cbr now on..

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Post #: 8

RE: please help what size sprocket - 5/10/2006 4:35:05 AM

fisherman

Posts: 117
Joined: 3/26/2006
From: Johannesburg, South Africa
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Yep, you'll need a Speedohealer, not so much for the speedo but rather the odo that will be over stating your mileage. Find your nearest dealer at www.speedohealer.com or click on the link on the banner that pops up in these forums

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RE: please help what size sprocket - 5/10/2006 11:33:36 AM

shoeman

Posts: 121
Joined: 2/7/2006
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i went down one in front and did the speed healer 15.00 usd for the sprocket from dealer and started using qmi in the fuel WOOOOOW

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Post #: 10

RE: please help what size sprocket - 5/13/2006 12:20:13 PM

repsol rob

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Joined: 4/16/2006
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i picked to go one down in the front and 2 up in the back.....which made my bike extremely fast off the line but that was it. For south florida professional riders this is garbage!!!! it revs out way to fast and you will get left on 95. it comes up in 1st, 2nd and 3rd if your nice. i went back to the standard 16 in the front and 1 up in the back. It like it a lot better it revs more acceptablely, i can crusie in 1st at 6500-7000 rpms in stead of the 8k that the 15 front did. If you like your top end and can get there and stay up there i wouldn't go any more than one up in the back LEAVE THE FRONT ALONE. until you have a enough power to go one up. if you need a little help on the wheelies in 2nd i would get one up in the back it will also stand right up in first.

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Post #: 11

RE: please help what size sprocket - 5/14/2006 5:40:48 AM

Anubis

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Stock here is 40 T Rear, I believe the US got 41 T rear as stock. Don`t know why? ? but your rear sprocket has the number of teeth stamped on, easiest way to find out.

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Post #: 12