IAx Advanced | 105 Di2 (Astral) - Athletes
IAx Advanced | 105 Di2 (Astral) - Athletes
SKU:FB95024007-51
Set a new standard for your speed and performance. The IAx with 105 Di2 brings you into the fast lane. PRs and podiums await.
- Currently available to VIC athletes only.
- Early-adopters get FREE bike build.
- Once full payment received, all bikes must be collected from Felt Australia (Dandenong South), or arrange to collect from Iron Ryan HQ. Bikes cannot be shipped direct to residential addresses.
- Bike fit not included. We highly recommend booking with your local expert bike fitter.

Size Guide: IAx Advanced | 105 Di2 (Astral) - Athletes
| 47 | 48 | 51 | 54 | 56 | 58 | |
|---|---|---|---|---|---|---|
| Rider Height | 152.4 - 167.6 cm | 152.4 - 167.6 cm | 167.6 - 172.7 cm | 172.7 - 180.3 cm | 180.3 - 187.9 cm | 187.9 - 195.5 cm |
| Rider Inseam | 70.8 - 74.4 cm | 70.8 - 74.4 cm | 74.4 - 77.9 cm | 77.9 - 83.0 cm | 83.0 - 85.8 cm | 85.8 - 88.9 cm |
Get out and go
We have updated the IA to become the IAx. By eliminating the frame/fork nose cone and outgoing one-piece front end we provide more fit options across a wider range of athlete levels. Still a race-ready set-up, the IAx now offers 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.
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New electronic shifting
The IAx complete with Shimano's updated 105 Di2 groupset. Quick electronic shifts across the 12-speed range and powerful brakes ensure optimal performance for all levels of rider.
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Roll for the win
Attack your competitive goals with the aero advantage of the custom Reynolds AR58/62 DB wheelset and Continental Grand Prix SL tyres combination. With great handling characteristics and a wind-cheating set-up, you'll see your PRs rack up.
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A fitter's friend
Dial-in your riding position with an easy-to-adjust set up on your front end. The aluminium stem, base bar, and extensions offer individual adjustments to get your best riding position.
Collapsible content
SPECIFICATIONS
Frameset
Frame
Felt IAx 1.0, UHC Advanced
Fork
Felt IAx 1.0, UHC Advanced
Brakes & Drivetrain
Front Brake
TRP HD-T910, 2-piston, Hydraulic disc brake
Front Brake Rotor
TRP TR25, 140 mm, Center lock
Rear Brake
TRP HD-T910, 2-piston, Hydraulic disc brake
Rear Brake Rotor
TRP TR25, 140 mm, Center lock
Rear Derailleur
Shimano 105 Di2, RD-R7150, 24-S
Front Derailleur
Shimano 105 Di2, FD-R7150
Cassette
Shimano 105 CS-R7100, 11-34 T
Chain
Shimano CN-M7100
Crankset
Shimano 105, FC-R7100, 50/34 T
Shift Lever
TRP HD-T910D
Wheels
Wheelset
Reynolds AR58/62 DB Custom, Tubeless ready
Tyre
Continental Grand Prix SL, 700x25
Cockpit
Handlebar
Basebar: Devox Bayonet 3.1 | SuperLite aluminum / Extensions: Devox Ergomod | aluminum
Saddle
ISM PS1.0, Satin Steel
Seat Post
Felt Aero TRI IL 1.0 VM
Additional Information
Permissible Total Weight
129 kg
Trailer Approval
No trailer approval
GEOMETRY
| 48 | 51 | 54 | 56 | 58 | |
|---|---|---|---|---|---|
| (A) Top Tube Length | 467 mm | 490 mm | 510 mm | 538 mm | 567 mm |
| (B) Seat Tube Length | 489 mm | 512 mm | 538 mm | 563 mm | 586 mm |
| (C) Seat Tube Angle | 79.5° | 79° | 78.5° | 78° | 77.5° |
| (D) Head Tube Length | 63 mm | 86 mm | 109 mm | 134 mm | 157 mm |
| (E) Steering Angle | 71.5° | 71.5° | 72° | 72° | 72° |
| (G) Wheel Base | 958 mm | 980 mm | 990 mm | 1016 mm | 1042 mm |
| (I) BB-Drop | 72 mm | 72 mm | 72 mm | 72 mm | 72 mm |
| (K) Fork Offset | 50 mm | 50 mm | 45 mm | 45 mm | 45 mm |
| (L) Stack | 473 mm | 495 mm | 520 mm | 544 mm | 566 mm |
| (M) Reach | 378 mm | 392 mm | 404 mm | 421 mm | 440 mm |
| (O) Crank Length | 165 mm | 165 mm | 170 mm | 170 mm | 172.5 mm |
SIZE GUIDE
| 47 | 48 | 51 | 54 | 56 | 58 | |
|---|---|---|---|---|---|---|
| Rider Height | 152.4 - 167.6 cm | 152.4 - 167.6 cm | 167.6 - 172.7 cm | 172.7 - 180.3 cm | 180.3 - 187.9 cm | 187.9 - 195.5 cm |
| Rider Inseam | 70.8 - 74.4 cm | 70.8 - 74.4 cm | 74.4 - 77.9 cm | 77.9 - 83.0 cm | 83.0 - 85.8 cm | 85.8 - 88.9 cm |