My ol buddy JC sent me this video about SRAM’s new mountain bike drivetrain called XX1.  In the past mountain bikers have relied on 3 front chainrings to provide a wide enough gear range to climb steep technical climbs to bomb down high speed road descents.  Improvements in drivetrain technology have rendered the triple crank obsolete as a 2×10 can provide just as wide range of gears with only two front chainrings.  Now SRAM is doing one better, 1×11.

I really like seeing this because if you think about it drivetrains have only seen small incremental changes and improvements for 40 years.  a triple crank touring setup from 1976 isn’t all that different from a triple crank setup now.  Its time to start thinking outside the box and SRAM’s huge 42 tooth cassette does just that.

Of course I won’t be able to afford a 1×11 for years when they eventually trickle down the parts to lower end groups.  I won’t be surprised if the POWERDOME 42-11 cassette costs more then my bike.


About Matt Gholson

Cycling, school teaching, husband.
This entry was posted in Bikes and components and tagged , , , , , , . Bookmark the permalink.

2 Responses to SRAM XX1

  1. Bill Chance says:

    That is something else. I wonder if that would be an advantage for a recreational cyclist. I actually shift my front chainrings as much as my back – going up and down hills.

    Beautiful technology though.

    Thanks for sharing.

  2. Matt Gholson says:

    I don’t see this as any advantage to a recreational cyclist. The advantage comes from a smoother cleaner drivetrain and a front chain ring that can be made to hold the chain instead of letting in go up or down. It should drop maybe 200-400 grams of weight , with the loss of the front shifter, cables, derailuer and chainring,

    None of these things would benefit a rec cyclist though. What would benefit them is a chainless drivetrain ran by a belt with an internal geared hub. Did you hear that SHIMANO!

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