sf gearing

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Nov 22, 2009 | 06:14 PM

bikeboyben14

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Joined: Aug 2009

Posts: 7

sf gearing

ok i know the sf is geared 14/39 can what can i change it to get a lil more bottom end

Nov 22, 2009 | 08:42 PM

MaverickAus

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13/39 would be the cheapest

Nov 23, 2009 | 04:35 PM

bikeboyben14

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Joined: Aug 2009

Posts: 7

how much will it throw the rpm off at highway speeds

Nov 23, 2009 | 05:27 PM

punkenduro09

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Joined: Jul 2008

Posts: 1,439

From: Murrieta, Ca

anyone got a link to a gearing calcultor?

Nov 23, 2009 | 07:42 PM

BigGreenBastard

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http://www.gearingcommander.com/

Nov 23, 2009 | 08:04 PM

cmott426

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Posts: 840

From: Sandpoint Idaho

1st Gear Member

7.6% is the gear ratio difference.

Nov 24, 2009 | 05:53 AM

MaverickAus

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It will add approx 600 rpm at 100 kph / 60 mph so instead of 6k rpm it will be around 6.6k rpm

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