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02-03 R1 Mechanical Help Mechnical and Critical Issues for the 02-03 R1

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Old 09-01-2007, 11:10 PM   #1
trevin00
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Sprocket size

I have a 2002 R1. I am getting ready to change the sprockets and chain out. What is the best, go up one or two teeth size on the rear sprocket?
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Old 09-02-2007, 12:11 AM   #2
nanjingldv
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I have a 2003 and I went -1 on the front and +2 on the rear (15/45) gave me better acceleration but the speedo is WAYYYYY off though
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Old 09-05-2007, 09:47 AM   #3
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Quote:
Originally Posted by trevin00 View Post
I have a 2002 R1. I am getting ready to change the sprockets and chain out. What is the best, go up one or two teeth size on the rear sprocket?
I like stock gearing, 16/43.

Clem
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Old 09-05-2007, 10:13 AM   #4
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-1 in the front +2 in the rear work best on the 02/03 R1 pulls like there is no tomorrow and you wont hardly lose any top end.

PS: Just remember to get yourself a Speedohealer because your speedo will be off by about 15 to 20% due to the sprocket change.
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Old 09-05-2007, 10:18 AM   #5
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I'm not 100% on this but I heard that you loose 5mph off your top speed for every tooth you go up so if you like top end I'd only go -1 +2 sounds about right to me.
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Old 08-30-2013, 12:45 PM   #6
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According to this the stock ratio is 15/45 final drive
http://www.aperaceparts.com/tech/YZFR1.html
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Old 08-30-2013, 09:22 PM   #7
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According to this the stock ratio is 15/45 final drive
http://www.aperaceparts.com/tech/YZFR1.html
Wrong. Stock is 16/43.

Mark
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Old 08-30-2013, 09:33 PM   #8
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Originally Posted by trevin00 View Post
I have a 2002 R1. I am getting ready to change the sprockets and chain out. What is the best, go up one or two teeth size on the rear sprocket?
Get yourself a 15T and see how you like it. It's what I've been running on my 99 for the last 10 years and I'm happy. If you like it, order new chain and rear sprocket and you're good to go. I'm betting you'll be happy with the 15T though.

Mark

ps It's not going to hurt running a few miles with new sprocket, old chain.
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Old 09-05-2013, 05:06 AM   #9
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Thought I was just -1 in the front. Looks like I'm -2/+2 then. It's beastly, just requires a bit of throttle control. I only do back roads and track occasionally (no highway at all) so this is perfect for me.


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