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  1. I had 2019 defy advanced and I generally liked. The real downside is it had the ” Giant Conduct brakes” which is a mixture of mechanical shifters, a junction box on the handlebar that turns it into hydraulic hose and then hydraulic calipers. So it’s not a full hydraulic system. When it worked well it was great but no mechanic ever wanted to work on it. Even the giant shop in town suggested I just replace the system with all mechanical when I wanted them to work on a brakes because they were getting weak.

    I’m pretty positive this year also used that braking system. I had the bike a couple years ago so I’m sure it’s just gotten worse as far as mechanics who would want to work on it.

    To replace it you can either buy new hydraulic brifters or replace the calipers with mechanical versions. I ended up going all mechanical, but the mechanic who did it put on soso mechanical calipers. Calipers. He said the ones I preferred to put on wouldn’t actually fit because of the positioning. I’m not positive if that was true, but I’ve read online about people converting it to all mechanical that there are issues.

    Switching it to all hydraulic I think is pretty expensive.

    I would see what condition the brakes are in. If they’re at all weak and You would like to make them better. You probably want to factor in a fair amount for either having them fixed or replacing them with some other system. Of course, since it’s a 2017, there’s also a possibility someone’s already dealt with this and removed the Conduct system. If that was the case, this bike would be much more appealing

    But besides the braking system, I actually really liked the bike. And like I said the original system when it worked was fine. The one I had at a 105 group set and the one listed here has tiagra I think which is a lower tier. But I’ve also had Tiagra rom that era and it was pretty good.

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