Trek 7.2fx. Is it possible to upgrade from 8 to 10speed?
03-12-12, 04:45 PM
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Trek 7.2fx. Is it possible to upgrade from 8 to 10speed?
<warning!>Real newbie question ahead...
Is it possible to upgrade my 8-speed Trek 7.2fx to a 9 or 10-speed cassette?
Thanks.
Is it possible to upgrade my 8-speed Trek 7.2fx to a 9 or 10-speed cassette?
Thanks.
03-12-12, 05:09 PM
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Yes, but you'll need a minimum of a new chain, cassette, crankset and rear shifter. You may need a new front and rear derailleur (some stuff is 8/9 speed compatible and some is 9 speed specific.) You will definitely need a front&rear derailleur for a 10 speed setup. If you go from a triple to a double then you can add front shifter to the list of possibly needing replacement which means replacing pretty much everything in the drivetrain.
Last edited by Dunbar; 03-12-12 at 05:27 PM.
03-13-12, 06:23 AM
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03-13-12, 06:34 AM
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Is it possible, sure, as others have noted all the parts that need swapping, but what are you hoping to gain from the change?
If buying a new, it's a no brainer to go for the latest parts, but when upgrading, there are still plenty of 8 speed cassettes and chains out there, and the ratios are similar to what you get with 10 speed.
If buying a new, it's a no brainer to go for the latest parts, but when upgrading, there are still plenty of 8 speed cassettes and chains out there, and the ratios are similar to what you get with 10 speed.
03-13-12, 12:50 PM
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the biggest difference in 8 speed is that you'll have larger jumps between gears and likely less total gear, although sometimes you do see a 8spd hybrid with more than 28T on the largest cog.
if you want to go faster, I would look at buying a used road drivetrain as long as you're either sure that you can get flatbar shifters for it, or that you want to convert to drop bars.
a 2x10 road drivetrain will be light and fast. used sram apex shouldn't cost all that much.
if you want to go faster, I would look at buying a used road drivetrain as long as you're either sure that you can get flatbar shifters for it, or that you want to convert to drop bars.
a 2x10 road drivetrain will be light and fast. used sram apex shouldn't cost all that much.
03-13-12, 05:37 PM
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Yes, but you'll need a minimum of a new chain, cassette, crankset and rear shifter. You may need a new front and rear derailleur (some stuff is 8/9 speed compatible and some is 9 speed specific.) You will definitely need a front&rear derailleur for a 10 speed setup. If you go from a triple to a double then you can add front shifter to the list of possibly needing replacement which means replacing pretty much everything in the drivetrain.
