2026 Trek Domane AL Gen 4 vs 2027 Giant Contend AR
The XS is the Giant Contend AR size closest to your 49 Trek Domane AL Gen 4. 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 AL Gen 4 in 49, the Giant Contend AR in XS places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket. Its wheelbase is 7 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −1 mm
- About the same height
- Frame reach
- +3 mm
- About the same reach
- Wheelbase
- −7 mm
- Shorter: quicker to change direction
- Head angle
- +0.7°
- Steeper: sharper steering
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
Trek Domane AL Gen 4, 49Giant Contend AR, XSDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Domane AL Gen 4 49 | Giant Contend AR XS | Difference |
|---|---|---|---|
| Reach | 368 | 370.5 | +3 mm |
| Stack | 540 | 539.2 | −1 mm |
| Head tube angle | 70.8 | 71.5° | +0.7° |
| Seat tube angle | 74.6 | 75.0° | +0.4° |
| Effective top tube | 516 | not listed | |
| Chainstay length | 425 | 422 | −3 mm |
| Wheelbase | 1001 | 994.4 | −7 mm |
| BB drop | 80 | 80 | ±0 mm |
| Standover | 717 | 717.5 | +1 mm |
| Seat tube length | 440 | 430 | −10 mm |
| Head tube length | 123 | 115 | −8 mm |
Differences are the Giant Contend AR minus the Trek Domane AL Gen 4. Full charts: 2026 Trek Domane AL Gen 4, 2027 Giant Contend AR.
Where each sits in its class
Trek Domane AL 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 AL Gen 4AL 2 Gen 4 | Giant Contend AR1 |
|---|---|---|
| Frame | Trek Domane AL | Giant ALUXX-SL Grade |
| Fork | Trek Domane AL | Giant Advanced-Grade |
| Shifter | Shimano Claris R2000 | Shimano CUES U6030 |
| Derailleur | Shimano Claris R2000 | Shimano CUES U6030, Shimano CUES U6000 |
| Cassette | Shimano HG31 | Shimano CS-LG400 |
| Chain | Shimano HG71 | KMC X11 |
| Crankset | Shimano Claris R2000 | Shimano CUES FC-U6030-1 |
| Bottom bracket | Shimano UN300 | Shimano BB-RS501 |
| Wheelset | Bontrager Paradigm 23 | Giant P-AR |
| Tire | Bontrager Kwaremont Comp, Bontrager R1 | Giant Gavia Fondo 2 |
| Brake | Tektro MD-C550, Tektro C550 | Shimano CUES U6030 F]160 R]160 |
| Rotor | Tektro Wave | not listed |
| Handlebar | Bontrager Comp | Giant Contact |
| Stem | Bontrager Elite | Giant Contact Aerolight |
| Grips | Not specified | not listed |
| Headset | Integrated, cartridge bearing | not listed |
| Seatpost | Bontrager Comp | D-Fuse |
| Saddle | Bontrager Verse Short | Giant Approach |
| Rim | not listed | Giant P-AR |
| Bar tape | not listed | Giant Cork Tape |
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