IAx Advanced Rival eTap AXS
Felt
Triathlon
IAx Advanced Rival eTap AXS is a triathlon road bike (2023), by Felt, part of the Iax family. 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. Relative to category specialists, the trade-off is a firmer ride feel than comfort-first options and a value score that depends more on priorities than pure price efficiency. Compare this bike across categories on MatchBikes.com to see whether a nearby segment gives you a better fit.
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 | 1.25 mm | 1.26 mm | 1.28 mm | 1.29 mm | 1.28 mm |
| Bottom Bracket Height | 264 mm | 264 mm | 264 mm | 264 mm | 264 mm |
| Stack | 477 mm | 499 mm | 524 mm | 548 mm | 570 mm |
| Reach | 382 mm | 396 mm | 408 mm | 425 mm | 444 mm |
| Top Tube Length | 471 mm | 494 mm | 514 mm | 542 mm | 571 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 | 962 mm | 984 mm | 994 mm | 1020 mm | 1046 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 |




























































