KOTM Feb 2009 Mat0302

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Old 04-15-2010, 08:50 AM   #1
Chicken Strip
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Location: 860, CT
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Default Taller sprockets?

Hi, I'm fairly new. 1999 GSX-600

So I've put about 1500 miles on the katana already this year after buying it in february and so far I love the bike. My only gripes are that I think the gearing a little too short and that my speedometer is off by about 10mph. The reason for this sprocket question is that I'll be doing mostly long (30-40m) highway commutes. I get 45mpg puting around town (which is awesome) and a little more with highway riding mixed in.

) What are the OEM Sprocket sizes?
) What size sprockets will make my RPM's drop from ~7k at ~70mph?
) How can I fix my speedometer problem? (EX: 80mph = ~70 actual)

Thank you for any help gurus!

Last edited by RyanR; 04-15-2010 at 08:55 AM..
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Old 04-15-2010, 08:58 AM   #2
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KOTM Nov 2007


15/47 is stock for a post 600...750's run a 45 rear...which would drop your rpm a bit on the 600, and get a little bit more top end, but may be sacrificial on the bottom end a little.

oh, chain pitch is a 530, btw....

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Old 04-15-2010, 09:22 AM   #3
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The speedo being off by like 10% is normal.
If it really bothers you, you can install a speedo-healer.
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