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Old 07-08-2011, 02:28 AM   #1
DR91LX
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Question Replacing sprockets on 06 GSX-R 600

Wanted to change the factory sprockets. Maybe one up in the front. What does everyone generally do on a 600? Will mpg drop sugnificantly? Bike is ridden on the street and some track days. Thanks for any input guys.
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Old 07-08-2011, 02:47 AM   #2
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-1 on the front will improve acceleration at the expense of 3-4 less mph on top and about 2-3 mpg. It's a pretty common change.
Some will recommend also going +2 in the rear in addition to the -1 in the front but imo for street use it's too extreme.
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Old 07-08-2011, 06:18 AM   #3
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^^^ That right there. Patrick's folks at Motorcycles Unlimited did this to my '06 GSXR600 and his specs are pretty much dead on.

Just make sure you're specific about +1 or -1.
Patrick is referring to front sprocket DOWN 1, not UP 1 as you stated in the OP.
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Old 07-08-2011, 07:27 AM   #4
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what patrick mentioned is exactly what i had done on mine as well. -1 up front and the rear was factory. it made a of a difference all by itself.
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Old 07-10-2011, 03:24 PM   #5
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Old 07-10-2011, 09:35 PM   #6
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-1 in front does not make that big of a difference IMO. I prefer -1+1 or -1+2. At -1+2 you will run 8k on the freeway though.
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Old 07-10-2011, 10:19 PM   #7
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Old 07-11-2011, 11:34 AM   #8
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Quote:
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-1 in front does not make that big of a difference IMO. I prefer -1+1 or -1+2. At -1+2 you will run 8k on the freeway though.
yea i did the 520 conversion -1+2......cant freaking stand it 7k at 80 mph
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Old 07-11-2011, 07:39 PM   #9
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Thats some great input guys. Yeah i just need a little more acceleration in 1st. i think -1 in front is excactly what im looking for. Hey thanks again. Oh btw anyone locally sell the -1 front sproket?
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Old 07-11-2011, 07:43 PM   #10
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I'd go +2 on the rear instead of the -1 on the front. Why? because it is less of a pain to change out + if I remember correctly a smaller front sprocket will wear you chain out faster.
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Old 07-11-2011, 07:59 PM   #11
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Quote:
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I'd go +2 on the rear instead of the -1 on the front. Why? because it is less of a pain to change out + if I remember correctly a smaller front sprocket will wear you chain out faster.
I was about to ask if it would be easier to just up the rear. Thanks I may try this.
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Old 07-11-2011, 08:31 PM   #12
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Its easier to do the rear for sure. Especially if you dont have an impact
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Old 07-13-2011, 04:55 PM   #13
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I wonder if the stock chain would still fit with +2 in the rear?
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Old 07-13-2011, 06:41 PM   #14
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just do -1 in the front and you wont have to worry about your chain being too short. If you go +2, on the rear, you'll shorten your wheelbase and it wont handle as well. For a street / track bike, -1 is perfect. Anything else is overkill for the streets. Every street bike I have owned has been simply -1.
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Old 07-13-2011, 06:56 PM   #15
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cool CDDILL35. Will do.
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Old 07-13-2011, 08:37 PM   #16
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Quote:
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just do -1 in the front and you wont have to worry about your chain being too short. If you go +2, on the rear, you'll shorten your wheelbase and it wont handle as well. For a street / track bike, -1 is perfect. Anything else is overkill for the streets. Every street bike I have owned has been simply -1.
A shorter wheel base is fine. IMO it will turn better but wheelie easier. If you can live with 8-9k on the freeway -1+2 will make it feel like a 1K up to 140
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Old 07-14-2011, 06:07 AM   #17
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Quote:
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A shorter wheel base is fine. IMO it will turn better but wheelie easier. If you can live with 8-9k on the freeway -1+2 will make it feel like a 1K up to 140
First off shortening the wheelbase is not always a good thing, especially on the GSXR due to it's shalllow swingarm angle.


Quote:
Originally Posted by DR91LX View Post
Thats some great input guys. Yeah i just need a little more acceleration in 1st. i think -1 in front is excactly what im looking for. Hey thanks again. Oh btw anyone locally sell the -1 front sproket?
I carry the sprockets in stock.
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Old 07-14-2011, 06:25 AM   #18
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Quote:
Originally Posted by Patrick View Post
First off shortening the wheelbase is not always a good thing, especially on the GSXR due to it's shalllow swingarm angle.
Patrick, can you elaborate?
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