IAx Advanced Rival eTap AXS
Felt
Triathlon
IAx Advanced Rival eTap AXS is a triathlon road bike (2024), by Felt, from the Iax lineup. This model is best for performance-focused riders who want an aggressive position, with a setup that gives you an aggressive, race-leaning riding position, with a surface profile that is best matched to paved roads. Metric-wise, it stands out for a clearly aero-focused setup for faster road riding and strong speed potential on smoother terrain. The trade-off to keep in mind is a firmer ride feel than comfort-first options and a value score that depends more on priorities than pure price efficiency. If this looks close to what you want, compare this bike on MatchBikes.com against similar models.
Rating

Score Summary
Performance
Built for speed and efficiency
Fit
Dialed-in Fit & Comfort
Value
Specifications
General
Frame
Drivetrain
Wheels
Brakes
Cockpit
Seat
Geometry
| Measurement | 48cm | 51cm | 54cm | 56cm | 58cm |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.251 mm | 1.263 mm | 1.287 mm | 1.292 mm | 1.286 mm |
| Bottom Bracket Height | 264 mm | 264 mm | 264 mm | 264 mm | 264 mm |
| Stack | 473 mm | 495 mm | 520 mm | 544 mm | 566 mm |
| Reach | 378 mm | 392 mm | 404 mm | 421 mm | 440 mm |
| Top Tube Length | 467 mm | 490 mm | 510 mm | 538 mm | 567 mm |
| Seat Tube Angle | 79.5 ° | 79 ° | 78.5 ° | 78 ° | 77.5 ° |
| Seat Tube Length | 489 mm | 512 mm | 538 mm | 563 mm | 586 mm |
| Head Tube Angle | 71.5 ° | 71.5 ° | 72 ° | 72 ° | 72 ° |
| Head Tube Length | 63 mm | 86 mm | 109 mm | 134 mm | 157 mm |
| Wheelbase | 958 mm | 980 mm | 990 mm | 1016 mm | 1042 mm |
| Bottom Bracket Drop | 72 mm | 72 mm | 72 mm | 72 mm | 72 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 |
| Rider Min Height | 152 cm | 166 cm | 171 cm | 179 cm | 186 cm |
| Rider Max Height | 169 cm | 174 cm | 182 cm | 189 cm | 195 cm |




























































