2027 Trek Domane SL Gen 5 vs 2025 Giant Contend AR
The ML is the Giant Contend AR size closest to your ML Trek Domane SL Gen 5. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Giant Contend AR
Compared with the Trek Domane SL Gen 5 in ML, the Giant Contend AR in ML places the top of the head tube at about the same height and 6 mm further forward, relative to the bottom bracket. Its wheelbase is 5 mm longer, which can contribute to stability at speed.
- Frame stack
- −1 mm
- About the same height
- Frame reach
- +6 mm
- Longer frame reach
- Wheelbase
- +5 mm
- Longer: steadier at speed
- Head angle
- +0.6°
- Steeper: sharper steering
- Chainstays
- +2 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Domane SL Gen 5 numbers we have for size ML are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Domane SL Gen 5 ML | Giant Contend AR ML | Difference |
|---|---|---|---|
| Reach | 377 | 383 | +6 mm |
| Stack | 596 | 595 | −1 mm |
| Head tube angle | 71.9° | 72.5° | +0.6° |
| Effective top tube | 553 | not listed | |
| Chainstay length | 420 | 422 | +2 mm |
| Wheelbase | 1010 | 1015 | +5 mm |
| BB drop | 78 | 80 | +2 mm |
| Standover | 805 | 810 | +5 mm |
| Seat tube length | 533 | 515 | −18 mm |
| Head tube length | 170 | 170 | ±0 mm |
| Seat tube angle | not listed | 73.0° |
Differences are the Giant Contend AR minus the Trek Domane SL Gen 5. Full charts: 2027 Trek Domane SL Gen 5, 2025 Giant Contend AR.
Where each sits in its class
Trek Domane SL Gen 5Giant 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 5SL 4 Gen 5 | Giant Contend AR4 |
|---|---|---|
| Fork | Trek Domane SL | Giant Advanced-Grade |
| Shifter | Shimano Tiagra R4020 | Shimano Claris |
| Derailleur | Shimano Tiagra R4000 | Shimano Claris |
| Cassette | Shimano RS400 | Shimano CS-HG50 Deore |
| Chain | Shimano LG500 | KMC Z72 |
| Crankset | Shimano Tiagra R4000 | FSA Tempo |
| Tire | Bontrager Kwaremont Comp | Giant S-R3 AC |
| Hub | Formula RX-142, Formula RX-512 | not listed |
| Rim | Bontrager Paradigm 23 | Giant S-R2 |
| Rotor | Tektro TR160 | not listed |
| Headset | Bontrager Expander Plug | not listed |
| Saddle | Trek Verse | Giant Approach |
| Frame | not listed | Giant ALUXX-grade |
| Brake | not listed | Tektro MD-C550, Shimano Claris |
| Handlebar | not listed | Giant Connect XS:40cm |
| Stem | not listed | Giant Sport XS:80mm |
| Grips | not listed | Velo cork tape |
| Seatpost | not listed | Giant D-Fuse |
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