2025 Trek Domane SL Gen 4 vs 2027 Giant Contend AR
The Giant Contend AR size closest to your 54 is the M. Compare the M instead
What changes on the Giant Contend AR
Compared with the Trek Domane SL Gen 4 in 54, the Giant Contend AR in XL places the top of the head tube 63 mm higher and 26 mm further forward, relative to the bottom bracket. Its wheelbase is 36 mm longer, which can contribute to stability at speed.
- Frame stack
- +63 mm
- Higher front end
- Frame reach
- +26 mm
- Longer frame reach
- Wheelbase
- +36 mm
- Longer: steadier at speed
- Head angle
- +1.2°
- Steeper: sharper steering
- Chainstays
- +2 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Domane SL Gen 4 numbers we have for size 54 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Domane SL Gen 4 54 | Giant Contend AR XL | Difference |
|---|---|---|---|
| Reach | 374 | 399.9 | +26 mm |
| Stack | 575 | 638.2 | +63 mm |
| Head tube angle | 71.3° | 72.5° | +1.2° |
| Effective top tube | 542 | not listed | |
| Chainstay length | 420 | 422 | +2 mm |
| Wheelbase | 1010 | 1045.8 | +36 mm |
| BB drop | 80 | 80 | ±0 mm |
| Standover | 754 | 843.9 | +90 mm |
| Seat tube length | 500 | 585 | +85 mm |
| Head tube length | 160 | 215 | +55 mm |
| Seat tube angle | not listed | 73.0° |
Differences are the Giant Contend AR minus the Trek Domane SL Gen 4. Full charts: 2025 Trek Domane SL Gen 4, 2027 Giant Contend AR.
Where each sits in its class
Trek Domane SL Gen 4Giant Contend AR
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Trek Domane SL Gen 4SL 5 Gen 4 | Giant Contend AR1 |
|---|---|---|
| Frame | Trek Domane SL | Giant ALUXX-SL Grade |
| Fork | Trek Domane SL | Giant Advanced-Grade |
| Shifter | Shimano 105 R7120 | Shimano CUES U6030 |
| Derailleur | Shimano 105 R7100 | Shimano CUES U6030, Shimano CUES U6000 |
| Cassette | Shimano 105 R7101 | Shimano CS-LG400 |
| Chain | Shimano SLX M7100 | KMC X11 |
| Crankset | Shimano 105 R7100 | Shimano CUES FC-U6030-1 |
| Bottom bracket | Praxis T47 | Shimano BB-RS501 |
| Wheelset | Bontrager Paradigm SL | Giant P-AR |
| Tire | Bontrager R3 | Giant Gavia Fondo 2 |
| Rim | Bontrager Paradigm SL | Giant P-AR |
| Brake | Shimano Disc 105 | Shimano CUES U6030 F]160 R]160 |
| Rotor | Shimano SM-RT70 | not listed |
| Handlebar | Bontrager IsoZone VR-SF | Giant Contact |
| Stem | Trek RCS | Giant Contact Aerolight |
| Bar tape | Bontrager Supertack Perf | Giant Cork Tape |
| Seatpost | Aero Carbon | D-Fuse |
| Saddle | Bontrager Short Comp | Giant Approach |
| Bag | Bontrager BITS | not listed |
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