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  1. #1
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    XT M740 or XT M770

    Here is the story...

    I just bought a full suspension frame and I am currently missing the following to complete my build:

    Crankset & BB (sorta)
    Rear Dérailleur
    Shifter Pods
    Cassette

    I currently have a hardtail and I am going to make it a single speed after my full suspension is build up. The hardtail currently has a set of complete XT 8spd system (M740). A friend mine suggested to buy complete new parts on my new full suspension instead of transferring my 8spd system over is it is old. I am considering if I should do that or just or buy new parts. He said I might run into problems later if I use the 8spd.

    If new parts, I am going for complete 2008 Shimano XT M770 Series. It will cost $500 tax included for crankset, bottom bracket, rear dérailleur, cassette, and shifter pods.

    Of course budget is an issue here. But $500 isn't too much and I am debating if I should go with new parts or use old parts. I also have an old RaceFace Turbine LP which I can put on my new bike. But my new XT purchase must be in bulk (including the crankset) at that price or is a no deal at all.

    What do you guys think...all new or go with old parts?

  2. #2
    use your best eye kenhill3's Avatar
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    Quote Originally Posted by achc View Post
    Here is the story...

    I just bought a full suspension frame and I am currently missing the following to complete my build:

    Crankset & BB (sorta)
    Rear Dérailleur
    Shifter Pods
    Cassette

    I currently have a hardtail and I am going to make it a single speed after my full suspension is build up. The hardtail currently has a set of complete XT 8spd system (M740). A friend mine suggested to buy complete new parts on my new full suspension instead of transferring my 8spd system over is it is old. I am considering if I should do that or just or buy new parts. He said I might run into problems later if I use the 8spd.

    If new parts, I am going for complete 2008 Shimano XT M770 Series. It will cost $500 tax included for crankset, bottom bracket, rear dérailleur, cassette, and shifter pods.

    Of course budget is an issue here. But $500 isn't too much and I am debating if I should go with new parts or use old parts. I also have an old RaceFace Turbine LP which I can put on my new bike. But my new XT purchase must be in bulk (including the crankset) at that price or is a no deal at all.

    What do you guys think...all new or go with old parts?
    I built up a new suspension frame two years ago because I had been riding the same hardtail for so long. I went for all new 9 speed XT stuff for the FS build and have not regretted it. Kind of during the same time period I had been gathering up some new, some used 8 speed stuff to redo the hardtail (I love my steel Parkpre) because I had hung on to a 7 speed system for so long and THAT was ridiculous to keep replacing stuff. I had all 8 sp stuff except I had bought a new 9sp XT crank with which I was going to use a nine speed chain with the whole works. I just got to thinking about having to try to replace the 8 sp stuff in the future- and I just said screw it. Turned the HT into a nine speed and things are right with the world again.

    Unless you just gotta have 8 speed, do what your friend said and build new 9 speed, I agree with him.
    No issues, no unavailable parts, now you have new parts, now you have what most serious MTB people have.
    "I tell you, We are here on earth to fart around, and don't let anybody tell you any different." - Kurt Vonnegut jr.

  3. #3
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    Quote Originally Posted by kenhill3 View Post
    I built up a new suspension frame two years ago because I had been riding the same hardtail for so long. I went for all new 9 speed XT stuff for the FS build and have not regretted it. Kind of during the same time period I had been gathering up some new, some used 8 speed stuff to redo the hardtail (I love my steel Parkpre) because I had hung on to a 7 speed system for so long and THAT was ridiculous to keep replacing stuff. I had all 8 sp stuff except I had bought a new 9sp XT crank with which I was going to use a nine speed chain with the whole works. I just got to thinking about having to try to replace the 8 sp stuff in the future- and I just said screw it. Turned the HT into a nine speed and things are right with the world again.

    Unless you just gotta have 8 speed, do what your friend said and build new 9 speed, I agree with him.
    No issues, no unavailable parts, now you have new parts, now you have what most serious MTB people have.
    Thanks for the advice. Its not a must that I want 8 speed. I have no problem riding 9spd with that closer gear ratio. I am going to make my hardtail a single speed so I will have my 8 spd stuff left behind hanging on the wall. In that case, I am thinking if I should buy a new 9 spd on the FS and leave the usable 8 spd on the wall or just move that 8 spd over and don't bother changing until the 8spd falls apart (which should last quite a long time). My hardtail is going to be single speed as soon as I start changing things. There is no doubt about that.

    I don't get where people is going with the 'hard to find replacement' for 8 speed system. What will you need to replace besides chain and cassette on a normal riding? Unless you crash and break your shifter pods, that is a different story. My 8 spd is XTR and that M900 has served me 4000 miles and still going strong. Current running 8 speed PC-89 chain. Those are the only two piece that can go wrong and I am sure the chain is the first one that will screw me over. You think I still have a chance finding another PC-89 around?

  4. #4
    use your best eye kenhill3's Avatar
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    Quote Originally Posted by achc View Post
    Thanks for the advice. Its not a must that I want 8 speed. I have no problem riding 9spd with that closer gear ratio. I am going to make my hardtail a single speed so I will have my 8 spd stuff left behind hanging on the wall. In that case, I am thinking if I should buy a new 9 spd on the FS and leave the usable 8 spd on the wall or just move that 8 spd over and don't bother changing until the 8spd falls apart (which should last quite a long time). My hardtail is going to be single speed as soon as I start changing things. There is no doubt about that.

    I don't get where people is going with the 'hard to find replacement' for 8 speed system. What will you need to replace besides chain and cassette on a normal riding? Unless you crash and break your shifter pods, that is a different story. My 8 spd is XTR and that M900 has served me 4000 miles and still going strong. Current running 8 speed PC-89 chain. Those are the only two piece that can go wrong and I am sure the chain is the first one that will screw me over. You think I still have a chance finding another PC-89 around?
    You really DO make an excellent point, though, it's not like 8 speed parts are totally unavailable. And yes, all it is is shifters, chain, and cassette in difference to 9 speed. Jeeze, ya know it's probably not that big of a deal, either way could work fine. Who can say that 8 speed is a mistake, just a little harder to replace.

    EDIT: Also' really not a bad idea to 'use up' the 8 speed stuff. Use it till ya just can't do anything with it anymore.
    "I tell you, We are here on earth to fart around, and don't let anybody tell you any different." - Kurt Vonnegut jr.

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