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Changing 8 speed cassette to 10 speed

Old 03-18-17, 09:01 PM
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Luvsnacks
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Changing 8 speed cassette to 10 speed

Need advice please.
I own a 2005 a trek 4500. My crank seems worn.
Would like to know if it's possible to change my 8 speed Shimano cassette to 10 speed, plus the crank. Original Deore derailler.
How would I go about it and what shimano shifters would I need?
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Old 03-19-17, 01:36 AM
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Nope.
But you definatly could run 9speed. Freehub is different and derailleur is different
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Old 03-19-17, 03:56 AM
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A 10 speed cassette WILL fit the hub. 8-10 speed are the same. Your rear derailleur may or may not have the range to work, it's hard to say. You would need 10 speed shifters, obviously.
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Old 03-19-17, 08:14 AM
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Originally Posted by Lazyass View Post
A 10 speed cassette WILL fit the hub. 8-10 speed are the same. Your rear derailleur may or may not have the range to work, it's hard to say. You would need 10 speed shifters, obviously.
Shimano 10speed mountain uses different cable pulls than road.
You'll need a new shifter, derailleur, cassette at the minimum.
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Old 03-20-17, 11:24 AM
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Take it to your LBS - they have tools to measure wear and will be able to help you if parts are worn.

I would recommend shifter, derailleur, chain, cassette and chain rings.

Last edited by grubetown; 03-21-17 at 02:36 AM.
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Old 03-20-17, 11:26 AM
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Originally Posted by Lazyass View Post
A 10 speed cassette WILL fit the hub. 8-10 speed are the same. Your rear derailleur may or may not have the range to work, it's hard to say. You would need 10 speed shifters, obviously.
And a 10-speed chain.
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Old 03-25-17, 03:06 PM
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Originally Posted by Luvsnacks View Post
Need advice please.
I own a 2005 a trek 4500. My crank seems worn.
There is a good chance a lot more than the crank is worn with a bike that old. Considering it was a mid-range bike to start with, I would recommend putting it to one side and buying a new bike. The money you spend will be well worth it if you are a dedicated rider.

I know what it's like to keep an old clunker well beyond it's lifespan, you get attached to a bike that has given you so much pleasure but at the end of the day it's just a machine that needs replacing. Of course doing a full restore on an old bike for the love of it is another matter. I have done that too but I always have another bike I can use for my regular exercise.

2005 Trek 4500 - BikePedia
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