Thread: question st6600 shifters
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Old 07-22-09 | 09:46 AM
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HillRider
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Joined: Aug 2005
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From: Pittsburgh, PA

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

If you have a double crank the 6600 brifters will work fine. If you have a triple crank you need 6603 brifters. Remember, all 105 10-speed STI's are both double and triple compatible while the Ultegra brifters are specific to one or the other.
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