Domane AL 2 Gen 4
Trek
Endurance
Domane AL 2 Gen 4 is an alloy endurance road bike (2025), by Trek, part of the Domane family. Rider-wise, it fits riders who prioritize comfort, confidence, and longer rides, with a setup that gives you a comfort-leaning riding position, with a surface profile that is well suited to rougher pavement and broken roads. Based on the metrics, key strengths are strong value-for-money versus many similar bikes, good fit flexibility for dialing in rider position, and a balanced aero profile for mixed road priorities. That said, the trade-off to keep in mind is less emphasis on outright speed than speed-focused builds. 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 | 44cm | 49cm | 52cm | 54cm | 56cm | 58cm | 61cm |
|---|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.417 mm | 1.467 mm | 1.512 mm | 1.537 mm | 1.568 mm | 1.608 mm | 1.678 mm |
| Bottom Bracket Height | 256 mm | 256 mm | 256 mm | 256 mm | 258 mm | 258 mm | 261 mm |
| Front Center | 576 mm | 589 mm | 596 mm | 603 mm | 610 mm | 609 mm | 624 mm |
| Rake | 53 mm | 52 mm | 54 mm | 53 mm | 58 mm | 49 mm | 48 mm |
| Trail | 66 mm | 66 mm | 59 mm | 59 mm | 61 mm | 60 mm | 63 mm |
| Stack | 510 mm | 540 mm | 561 mm | 575 mm | 591 mm | 611 mm | 646 mm |
| Reach | 360 mm | 368 mm | 371 mm | 374 mm | 377 mm | 380 mm | 385 mm |
| Top Tube Length | 507 mm | 516 mm | 530 mm | 542 mm | 554 mm | 567 mm | 586 mm |
| Seat Tube Angle | 74.6 ° | 74.6 ° | 74.2 ° | 73.7 ° | 73.3 ° | 73 ° | 72.7 ° |
| Seat Tube Length | 390 mm | 440 mm | 475 mm | 500 mm | 525 mm | 548 mm | 576 mm |
| Head Tube Angle | 70.3 ° | 70.8 ° | 71.3 ° | 71.3 ° | 71.9 ° | 72 ° | 72.1 ° |
| Head Tube Length | 95 mm | 123 mm | 145 mm | 160 mm | 175 mm | 195 mm | 235 mm |
| Chainstay Length | 420 mm | 425 mm | 420 mm | 420 mm | 420 mm | 425 mm | 425 mm |
| Wheelbase | 983 mm | 1001 mm | 1003 mm | 1010 mm | 1018 mm | 1022 mm | 1038 mm |
| Bottom Bracket Drop | 80 mm | 80 mm | 80 mm | 80 mm | 78 mm | 78 mm | 75 mm |
| Standover Height | 657 mm | 717 mm | 735 mm | 754 mm | 776 mm | 796 mm | 842 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 | 700 | 700 |
| Rider Min Height | 150 cm | 156 cm | 162 cm | 167 cm | 173 cm | 179 cm | 184 cm |
| Rider Max Height | 153 cm | 164 cm | 169 cm | 175 cm | 181 cm | 186 cm | 191 cm |




























































