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Introducing the TriRig Sigma Stem   Bookmark and Share
images by Nick Salazar   •   Sep 28, 2012   •   hits 46,184

A window on the top of the stem cover is built to allow access to control box buttons. Positioning the control box is up to the user - the Sigma is meant to be flexible enough to allow a variety of options, but it's up to the user to dial that in.
 
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The Sigma stem is currently in development, and will soon be available at this link in the TriRig Store.

The TriRig Sigma is the first production stem built to provide superlative aerdynamics, elegant cable management, and integrated centerpull cable routing for aero brakes like our own Omega. This is TriRig's next production project, and it's going to significantly clean up the traditional front end to a degree previously achieved only in the realm of the so-called 'superbikes.'



This image should give you a good idea of what the Sigma is all about. But the best part about it is, this is a PHOTOGRAPH, not a computer-generated graphic. This image is true to scale, and shows the rather striking difference in frontal area between the Sigma and a traditional stem.

Here's the Sigma installed on a bike. You can see how the cables are managed quite neatly to keep them out of the wind. But that stem cover can be removed at any time for easy access to the stem cavity or the cables themselves.

A window on the top of the stem cover is built to allow access to control box buttons. Positioning the control box is up to the user - the Sigma is meant to be flexible enough to allow a variety of options, but it's up to the user to dial that in.

Integrated centerpull cable routing sets the Sigma apart as the ideal choice for using with brakes like the Omega.

From the front, the side, or the rear, the Sigma is clean and elegant.

The cables tuck into the stem and route out the rear. The removeable cover makes everything dead simple to set up.

The closeup of the rear half shows how the stem cover helps to manage the cables in a very simple, effective way. There's also a large cavity inside the stem to house electronic control boxes for bikes with Shimano Di2 or Campagnolo EPS.

Another angle on the Sigma

Believe it or not, this bike was built up from an open mold frameset that cost $400. But with the simple upgrades of the Omega brake and Sigma stem, it looks absolutely stunning. The bike in this photo is fully cabled and working, it's just that none of the cables are visible to the wind!

Here's a profile shot of that bike, showing you how the Sigma helps manage the bike's cables and keep them out of sight and invisible to the wind.

The TriRig Sigma stem, coming soon.

Sigma and Omega - a dynamic duo.

This is the prototype computer mount, which is being refined and finalized. It attaches with the single M4 bolt shown, and makes it simple to attach your bike computer without excessive hardware.

The tiny feature on the bottom half of the stem is where the computer mounts attach, via a single M4 bolt.

Here's the Sigma with the computer mount attached.

The mount is designed to sit within the frontal profile of the stem, staying out of the wind.

Here's how your computer might look attached with the Sigma's integrated computer mount. Slick.

The Zero Rise stem will be released first, with a 35mm version following later in 2013.


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