2025 Trek Domane SL Gen 4 vs 2026 Giant Contend AR
The Giant Contend AR size closest to your 54 is the S. Compare the S instead
What changes on the Giant Contend AR
Compared with the Trek Domane SL Gen 4 in 54, the Giant Contend AR in L 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 L | Difference |
|---|---|---|---|
| Reach | 374 | 400 | +26 mm |
| Stack | 575 | 638 | +63 mm |
| Head tube angle | 71.3° | 72.5 | +1.2° |
| Effective top tube | 542 | 595 | +53 mm |
| Chainstay length | 420 | 422 | +2 mm |
| Wheelbase | 1010 | 1046 | +36 mm |
| BB drop | 80 | 80 | ±0 mm |
| Standover | 754 | 856 | +102 mm |
| Seat tube length | 500 | 585 | +85 mm |
| Head tube length | 160 | not listed | |
| 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, 2026 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 ARAR 1 |
|---|---|---|
| Frame | Trek Domane SL | Giant Contend |
| Fork | Trek Domane SL | Giant Advanced-Grade Composite, full-composite OverDrive steerer, 12x100mm thru-axle, disc |
| Shifter | Shimano 105 R7120 | Shimano 105 Di2 |
| Derailleur | Shimano 105 R7100 | Shimano 105 Di2 |
| Cassette | Shimano 105 R7101 | Shimano 105 |
| Chain | Shimano SLX M7100 | KMC X12L-1 |
| Crankset | Shimano 105 R7100 | Shimano 105 |
| Bottom bracket | Praxis T47 | Shimano BB-RS501 |
| Wheelset | Bontrager Paradigm SL | Giant P-R2 Disc |
| Tire | Bontrager R3 | Giant Gavia Fondo 2 |
| Rim | Bontrager Paradigm SL | not listed |
| Brake | Shimano Disc 105 | Shimano 105 Di2 |
| Rotor | Shimano SM-RT70 | Giant MPH |
| Handlebar | Bontrager IsoZone VR-SF | Giant D-Fuse SL |
| Stem | Trek RCS | Giant Contact |
| Bar tape | Bontrager Supertack Perf | not listed |
| Seatpost | Aero Carbon | Giant D-Fuse |
| Saddle | Bontrager Short Comp | Giant Approach |
| Bag | Bontrager BITS | not listed |
| Grips | not listed | Velo Cork tape with gel |
| Headset | not listed | Giant OverDrive |
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