Acros Hydraulic Shifting System and 29er Wheels

29er Components Wheels

Christophe, the engineer from Acros, shows us the new hydraulic shifting system at Bike Press Camp.
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Acros Hydraulic Shifting System

  • Hydraulic operated
  • “Push Push” system – no spring for downshifting in front and rear derailleur
  • All shifting done with thumb
  • Have all the force of shifting hand in both directions
  • No friction inside so not much force needed from you
  • Complete set weighs 175 grams less than an exterior set
  • 10 speed conversion set available
  • Hydraulic pipes contain Mineral oil inside
  • No oil comes out and no dirt can go in – maintenance free
  • Free of temperature or altitude influence
  • $2,000 US
  • 10 year warranty

Marius, the general manager at Acros, shows us the new 29er wheels.
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Acros 29er Wheels

  • 29-inch wheelset
  • Rim made of 7,000 aluminum shotpeened surface
  • Special profile hump to securely tighten tire in fit
  • Weighs 1,580 grams
  • $799 US
  • $850 US for RTR “Ready to Ride” – Wheelset comes with tire, tube and wheelbag

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About the author: Gregg Kato

Gregg Kato studied journalism and broadcasting in college while working many different jobs including deejaying, driving a forklift and building web sites (not all at the same time). Kato has been the Site Manager of Mtbr.com for over 12 years and enjoys riding local Santa Cruz trails. Besides being an avid mountain biker, he is also a motorcycle fanatic. Two wheels, one Passion.


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  • jc says:

    Too pricy for a derailleur that will get torn up cool tech though. Also wouldn’t a “ready to ride” wheel have a disc brake rotor? I wouldn’t want to ride anywhere without brakes.

  • Yevgen says:

    Looks good but shifting process is terrible — “pushing in a slightly different position” IMO isn’t suitable for intensive races.

  • y0bailey says:

    Why not? Don’t you just “push in a slightly different position” with your thumb on every SRAM setup?

  • The Dude says:

    no, you push an entirely different lever with sram
    agree with yevgen, that is a terrible method for differentiating between up/down shifts…with speed and banging around it looks like it will be very finnicky

  • whrdr says:

    SRAM road shifters are only one lever and that hasn’t hurt them. I don’t think it’s that big of an issue. While this is pretty cool, I do wonder how this hold upi over the long haul or if the product will sell. A ten year warranty does not mean a thing if the company is out of existence. Remember all those “American” made deraileurs back in the mid 90s that were supposed to be so great? Thanks but I’ll save my resource allocation for lower tiered parts to have some money left over for other toys – $2k could by a full XT group and a pair of skis or a nice set of wheels and still have mone left over for the groceries.

  • Varaxis says:

    Wish they’d spent their development time on a non-derailleur based shifting solution. Gearbox type shifting like Hammerschmidt, Rohloff, Alfine, etc. is what I want to see brought to mtb.

  • TB in NJ says:

    I draw the line are hydraulic shifting. Technology is getting stoopid in my opinion.

  • drcuzo says:

    Thank God for innovators !!!!

    Thanks for pushing the boundaries so we all benefit in the future. Producing new products must be horrendously expensive. Thank you Christophe.

  • Cody says:

    Wow! Good job Acros, I’m glad to see a company thinking outside the box and trying something new. This product has a lot of great potential and I’m looking forward to what is next. All those haters need to stop and think for a moment and realize what it takes for a company to design/engineer and test a product like this. It’s going to be expensive (at least for a while) but nobody is required to buy or use it. I for one would be happy to buy a product like this and give it the opportunity to excel and improve. Keep it up Christophe and Acros.

  • cmonkep says:

    “Complete set weighs 175 grams less than an exterior set”

    I know he has an accent, but I’m pretty sure he said “XTR”

    Pretty sweet tech. For those complaining about positional shifting, why not try it before saying it’s unsuitable for use.

  • norcom says:

    Few years ago when I was first getting my carbon frame, A LOT of people on these forums were against carbon frames and thought they would never make it mainstream. Now it seems like every other thread is people wanting a carbon frame. I on the other hand am over the carbon frames.

    I really don’t want the hydro shifters and I’m seriously hoping that I wont have to bleed my brakes in the future. As much as I love my adjustable seatpost, I wouldn’t want the hydro version of that either. You just don’t need that much power for certain things.

  • norcom says:

    Err I mean “bleed my derailleurs in the future”

  • Adrinln says:

    It’s not about the power its about the shifter being in the same position every time you hit the lever. It will not be affected by dirt or worn out springs. I was just thinking about this type of set up last month. 2K is still a little steep for me. I will just have to wait.

  • ginsu says:

    Just ridiculous, I couldn’t imagine spending $2000 for shifters and having the hanging out all over the bike just ready to be ripped off in any crash. The fluid comes out and you can’t even shift home.

    The only way I would pay that much for hydraulic shifting is in a SEALED-GEARBOX!!!

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