Alpha X + Felt IA Compatibility
images by Nick Salazar
Nov 10, 2015  hits 65,261

There's actually a pretty good aero match to the IA's integrated storage box.
There's actually a pretty good aero match to the IA's integrated storage box.

IA10 (IAx frames) » Here we show that the Alpha X and Sigma X are perfectly compatible with the new IAx frames. We are even using the aero-matched dust cap included with the bike, although you could use the Alpha X's included ultra-low dust cap to save another 5mm of stack height. And yes, this is a pre-cut fork, as delivered with complete bikes. No need to get an uncut fork.

We are waiting on delivery of a lovely Felt IA10 which we plan to build up and review. In the mean time, we've gotten some questions about the compatibility of the new IA and the original IA with our own Alpha X aerobars. So, this article will lay that question to rest. In short, the Alpha X (and upcoming Sigma X) is perfectly compatible with both the new IAx and the original IA! That's right, the Alpha X can even replace the original equipment of the integrated flavors of IA. And in an amazing coincidence, the very short length of the pre-trimmed IA forks happened to be the perfect length for the Alpha X - we just slammed the bars, and no spacers were needed. The steerer tube was the perfect length, as you'll see in the pictures below. Big thanks to TriBella Women's Multisport for inviting us to check out the compatibility on their bikes.



Tags » aerobars,  felt,  frames,  iabike

IA10 (IAx frames) 

Here we show that the Alpha X and Sigma X are perfectly compatible with the new IAx frames. We are even using the aero-matched dust cap included with the bike, although you could use the Alpha X's included ultra-low dust cap to save another 5mm of stack height. And yes, this is a pre-cut fork, as delivered with complete bikes. No need to get an uncut fork.

  • There's actually a pretty good aero match to the IA's integrated storage box.
  • The steerer  height turned out to be perfect on the IA10's pre-trimmed fork.
  • The Alpha X cable port has plenty of clearance to run housing down to the Omega X brake.
  • IA10 (IAx frames)
  • IA10 (IAx frames)
  • IA10 (IAx frames)
  • IA10 (IAx frames)
  • IA10 (IAx frames)

Original IA (integrated bike) 

This shows the compatibility of the Alpha X and Sigma X on the original IA - yep, the Alpha X can be swapped out for the original bars. Here, we took off the integrated IA stem, and simply swapped it out for a dust cover. We used an FSA cover, because we didn't have the Alpha X dust cover on hand, but it would work either way.

  • Original IA (integrated bike)
  • Just like on the IA10, the pre-cut steerer tube happened to be the perfect length.
  • Just like on the IA10, the pre-cut steerer tube happened to be the perfect length.
  • Pretty good match with the IA's brake cover. But we can make it a *perfect* match if we use the Alpha X's included ultra-low dust cover, and shave off the screw tabs on the brake cover.
  • Original IA (integrated bike)
  • Original IA (integrated bike)

Both bikes 

They just look so lovely together. We at TriRig are really looking forward to an in-depth review. Thanks for looking!

  • Both bikes
  • Both bikes
  • Both bikes

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