2011 momsen bikes sl929 29er carbon fiber mountain bike

When we posted Momsen’s Bat Wing extra bottle cage mount, he reached out to show us what he’s been working on lately…a totally bad ass, full carbon 29er hardtail called the Momsen SL929.

The complete bike will be available in April and, built up with full XTR 2×10, FSA/Easton carbon cockpit, Fizik Tundra carbon-railed saddle, Rockshox Reba RTL, Stan’s NoTubes ZTR Race wheelset and Kenda tires, it comes in at just 9.05kg (19.95lbs) for a 17″ frame size.

The styling on the bike is like a mix of Orbea’s dropout design with Specialized’s swooping top tube to seatstays curve. Then it throws in solid features like rear brake mounts inside the rear triangle, tapered headtube and internal cable routing.

Video and lots more pics and specs after the break (UPDATED with U.S. pricing at bottom)…

Momsen has designed and spec’d bikes for more than a decade for Raleigh South Africa and others, then decided to start his own component line. Now, he has several bikes including an alloy 29er, the latest being this full carbon 29er. For 2012, he says he’ll have a full suspension 29er and Reynolds steel hardtail 29er joining the lineup.

The SL929 uses a high modulus carbon fiber weave for the frame with a UD outer layer for looks. It’s available in small, medium and large sizes with effective top tube lengths of 600, 620 and 640mm respectively.

2011 momsen bikes sl929 29er carbon fiber mountain bike

The SL929 will also be available as a frame only or frameset to include the Reba fork, headset, frame and seat clamp. Frameset USD retail should be around $1,795, complete bike as shown here around $5,495.

Momsen, based out of South Africa, is big on 29ers, which he says are huge there. He’s sponsoring Ray Chaplin in a quest to circumnavigate the poles on a bike…a Momsen 29er, to be exact. Get the details on that little adventure at shova360.com.


  1. JS – Thanks for the comment, there’s no way we can check or know of every single frame out there. It does look to us like there are some differences, in particular the thickness of the seatstays, the seatstay/seattube junction and the locations of the internal cable ports and cable mounts, among others, but we’ve alerted Momsen of the comment, too, and invited him to comment.

  2. Apparently there use the same mould and provider that Avanti Bikes and Focus. It defrauds one these manufacturers, I prefer building my own bike and not giving my money to these guys.

  3. @ JS You have to be kidding that this is an axman frame right? Anyway, looking at one this morning and might be buying proudly South African.

What do you think?