Skip to main content

Felt Bicycles IAx Advanced 105

Felt Bicycles IAx Advanced 105
Color: Sage White
Size: Select size
Wheel Size: 700c
Please select options Unavailable
This item is not permitted to be shipped, however it can be purchased online and picked up.



IAx provides a more affordable and straightforward option for most of the triathletes. Despite the advancements of our IA 2.0 platform, the standard IA design remains an iconic benchmark for speed and performance. This is why we drew inspiration from it while developing the new IAx. Tested to be as fast as the iconic IA, the IAx differs only in the frontal area. We opted for a simpler and conventional fork design, foregoing the well-known bolt-on aero nose cone featured on the IA and IA 2.0.

The IAx is the updated version of our famous IA. By eliminating the frame/fork nose cone and complicated one-piece front end we provide more fit options across a wider range of athlete levels. Race-ready with the advantages of a streamlined and simplified design to make bike set-up easier and to keep things simple with overall maintenance and travel to events.

The newly optimized IAx is meticulously crafted for aerodynamics. Through extensive CFD modeling, rigorous wind tunnel testing, and real-world prototype validation, we have unequivocal confidence in the IAx's speed. Whether achieving straight-line velocity or effortlessly navigating crosswinds in the aero position, the IA empowers riders to excel and deliver peak performance on race day.

The IAx introduces a conventional front fork, eschewing bolt-on nose cones and add-on aerodynamic covers. Stripping away the non-essentials, we've engineered one of the fastest triathlon bikes with the simplicity reminiscent of a standard road bike. We understand the satisfaction of having a sleek and easy-to-assemble bike, as we've all been there, appreciating the uncomplicated joy of a seamless setup.

The New IAx comes with the integrated CALpac 2.0. This storage unit positioned on the top tube offers space for all of the riding essentials with quick and easy access to gels and bars. The New IAx also includes the BTSpac set behind the seat tube. This is ideal for a flat repairs and/or on-the-go tool kit, or any other items that a rider doesn't require at-hand, all in an aero package.

Frame Size4851545658
Top Tube Length467 mm 490 mm510 mm538 mm567 mm
Seat Tube Length489 mm 512 mm538 mm563 mm586 mm
Seat Tube Angle79.5 ° 79 °78.5 °78 °77.5 °
Head Tube Length63 mm 86 mm109 mm134 mm157 mm
Steering Angle71.5 ° 71.5 °72 °72 °72 °
Wheel Base958 mm 980 mm990 mm1016 mm1042 mm
Standover Height733 mm 755 mm779 mm803 mm825 mm
BB-Drop72 mm 72 mm72 mm72 mm72 mm
Fork Offset50 mm 50 mm45 mm45 mm45 mm
Stack473 mm 495 mm520 mm544 mm566 mm
Reach378 mm 392 mm404 mm421 mm440 mm
Crank Length165 mm 165 mm170 mm170 mm172.5 mm
Frame SizeRider Height (cm)Rider Height 9in)
47152.4 - 167.6 5'0" - 5'5"
48152.4 - 167.6 5'0" - 5'5"
51167.6 - 172.7 5'5" - 5'8"
54172.7 - 180.3 5'8" - 5'11'
56180.3 - 187.9 5'11" - 6'2"
58187.9 - 195.5 6'2" - 6'5"


Pedals Sold Seperately
Fork Felt IntegratedAero Disc 1.0, UHC Advanced + TeXtreme carbon fiber
Chain Shimano CN-M7100
Frame Felt IAx 1.0, UHC Advanced
Tires Continental Grand Prix SL, 700x25 mm,
Brakes TRP HD-T910, 2-piston, Hydraulic disc brake
Rotors TRP TR25, 140 mm, Center lock
Saddle ISM PS1.0, Satin Steel
Wheels Reynolds AR58/62 DB Custom, Tubeless ready
Crankset Shimano 105, FC-R7100, 52/36 T
Seatpost Felt Aero TRI IL 1.0 VM
Shifters microSHIFT BS-A11
Handlebars Basebar: Devox Bayonet 3.1 | SuperLite aluminum
Extensions: Devox Ergomod | aluminum
Rear Derailleur Shimano 105 R7100, short cage, 24-S
Front Derailleur Shimano 105 R7100, braze-on

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Sage White / 48cm / 700c 9010654145331 9512400448 210000116302
Sage White / 58cm / 700c 9010654145201 9512400458
Sage White / 56cm / 700c 9010654145287 9512400456 210000116299
Sage White / 54cm / 700c 9010654145300 9512400454 210000116300
Sage White / 51cm / 700c 9010654145294 9512400451 210000116301