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Alpha X Compatibility

Steerer Tubes

The Alpha X is compatible with nearly any bike that has a standard fork steerer tube of 1-1/8" (or can be used on 1" steerers with use of a shim). Alpha X uses a wedge clamp to grip the steerer tube, and has no pinch bolts behind the stem, resulting in a smooth back surface. This also allows for a wide range of compatibility even with bikes that have a tight clearance envelope behind the stem, such as the Fuji Norcom Straight, Scott Plasma 3, or Specialized Shiv TT.


The Alpha X can accept any aerobar extensions with the industry standard 22.2mm outer diameter. It can be purchased with our own Gamma extensions which allow a variety of different positions to be achieved. However, it can also be purchased without any extensions so that you can use your own. Any standard 22.2mm-OD extension may be used.

Some older extensions use a 22.0mm diameter instead of the more common 22.2mm standard. These undersized extensions may be difficult to tighten down, and we cannot guarantee fit. However, we have successfully tested some 22.0mm extensions in the bar, and they fit well. So if you have a favorite extension in the 22.0mm standard, it should fit just fine work in the Alpha X.

Center Pull Brakes

The Alpha X has an internal cable stop allowing for ultra-clean setups. Housing is run from the brake lever to the cable stop. This is all run inside of the base bar, so you get no drag penalty. You then run bare cable from the cable stop at the center of the base bar to the front brake. This type of routing is ideal for the Omega X and other centerpull brakes.

Hydraulic Brakes

The Alpha X's internal cable stop can be removed so that your front hydraulic line can exit the base bar at the center of the head tube. This results in less drag than sending the hydraulic line out the back or side of the base bar. The Alpha X is fully compatible with the Magura brake.

Other Brakes

For other brakes that require housing all the way from the lever to the front brake (Such as V-brakes, side pull brakes, dual pivot brakes, etc.), you can remove the internal cable stop and route the front brake housing out of the base bar at the center of the head tube. This generally results in less drag than routing the cable out the back or side of the base bar.

BTA Bottles and Cages

The Alpha X comes with an integrated BTA mount that is compatible with standard bottle cages. Any retail BTA solution that attaches to a standard cage mount (Speedfil A2, Profile Design HC Bottle) should be compatible with the Alpha X. The mount may be removed to make room for non-standard BTA solutions like the TorHans AeroZ and others.