K-Edge Ki2 Kit Converts Di2 to Mountain Bike Group



K-Edge’s Ki2 Electronic Shifting kit combines a collection of their CNC’d pieces with the Shimano Di2 drivetrain parts. It’s available as either the full group with the battery, derailleurs and shifters and XTR cranks and brakes. Or, you can get just the electronic Di2 bits or send in your own Di2 parts and they retrofit it as necessary. Prices are posted after the break along with detail pix and more info…



The shift button pods are machined to fit the climber’s remote shift buttons and mount inline with Shimano’s brake lever clamps just like their mechanical shifters would. The button package includes the pods, buttons and electronics/wire harness. Currently, the auxiliary shift buttons are designed to plug into the regular shifters, so K-Edge hard solders the wires into the front wire harness. Word is the new Ultegra Di2 system will provide an appropriate click-connect solution. Along those lines, K-Edge will be working on an Ultegra Di2 kit, too.


The only thing required up front us their standard braze-on direct mount adapter clamp. It positions the front derailleur about 4mm more outboard than it would be on a road bike to compensate for the different chain line on mountain bikes. They’re working on an adapter for frames with direct mount front derailleurs. It’s best that you check with them before ordering to make sure it’ll work with your frame.

In the rear, they increased the spring tension at the B and P springs to mimic the chain tension that a standard XTR rear mech would provide.


It’s available in their five standard ano colors (black, gun metal, blue, red & gold). This orange is actually a custom color done up for this Niner to show off the system.


19 thoughts on “K-Edge Ki2 Kit Converts Di2 to Mountain Bike Group

  1. Here is the conversation that just took place:
    Coworker: “why?”
    Me: “because its sick”
    Coworker: “ya, but why?”
    Me: “….so sick”
    Coworker: “why?”
    Me: “SICK!”

  2. Innovative and very cool but the price is insane!

    Don’t get me wrong, I fully understand the complexities
    and time required to design and produce these but wow…

    I’ll keep my cable driven drivetrain (works for everyone)
    and buy like 3 Niner frames instead.

    Good on ya if you can budget these on to your bike.

  3. Prices are absurd, horizontal button layout is undesirable. This can be done better and cheaper.

    $475 for a cage and pulleys? Ridiculous.

  4. For adaptive riders or people like me who have bad thumbs and it makes shifting hard (I’ve been using grip shift but the sheer diameter of that thing is another issue for my small hands) – this is cool. But the price, yikes!!! This could extend my riding career though — I’m going to hope for cheaper/better solutions by the time I’m totally dead in the water.

  5. sequential wouldn’t be innovative either. It’s been done with Di2.

    The shifter layout seems obvious, the left button moves the chain left across the gears, right button moves it right. Ergonomics may be off but I’d have to put my hands on it and actually feel it. My thumb happens to articulate at the knuckle, so I can move it left and right.

  6. i think we need to wait like two years untill it’ll be affordable.. new things will come out to the market.. no need to waste tons of money on these gadgets..

  7. Does anyone in the industry know if Shimano will come out w/ their own electrical groupo for mountain bikes?

  8. 1190 FOR A REAR DER!!!! My riding has gotten cut down to 2-3 times a week, but I am on my 3rd rear der this season…..I need to get a better job.

  9. this fixes a problem that never existed in the first place. what a waste of engineering….K Edge is going to need to do better if they actually want to stay in business. this stuff is way too expensive…..and if you are a pro, you probably get it for free.

  10. The slant on the rear parallelogram is sub-optimal for any cog size greater than 28 teeth. This is an issue with any rear road derailleur REGARDLESS of cage length. Front derailleur performance will suffer on a triple crank and is also sub-optimal in radius (chainring size). Anywho, I am sure it “works”…just not at a very high standard.

Leave a Reply