2027 Trek Domane SL Gen 5 vs 2026 Giant Contend AR
The M is the Giant Contend AR size closest to your L 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 L, the Giant Contend AR in M places the top of the head tube 23 mm lower and 3 mm further forward, relative to the bottom bracket. Its wheelbase is 4 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −23 mm
- Lower front end
- Frame reach
- +3 mm
- Longer frame reach
- Wheelbase
- −4 mm
- Shorter: quicker to change direction
- Head angle
- +0.5°
- 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 L are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Domane SL Gen 5 L | Giant Contend AR M | Difference |
|---|---|---|---|
| Reach | 380 | 383 | +3 mm |
| Stack | 618 | 595 | −23 mm |
| Head tube angle | 72.0° | 72.5 | +0.5° |
| Effective top tube | 562 | 565 | +3 mm |
| Chainstay length | 420 | 422 | +2 mm |
| Wheelbase | 1019 | 1015 | −4 mm |
| BB drop | 78 | 80 | +2 mm |
| Standover | 826 | 810 | −16 mm |
| Seat tube length | 553 | 535 | −18 mm |
| Head tube length | 192 | not listed | |
| 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, 2026 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 ARAR 1 |
|---|---|---|
| Fork | Trek Domane SL | Giant Advanced-Grade Composite, full-composite OverDrive steerer, 12x100mm thru-axle, disc |
| Shifter | Shimano Tiagra R4020 | Shimano 105 Di2 |
| Derailleur | Shimano Tiagra R4000 | Shimano 105 Di2 |
| Cassette | Shimano RS400 | Shimano 105 |
| Chain | Shimano LG500 | KMC X12L-1 |
| Crankset | Shimano Tiagra R4000 | Shimano 105 |
| Tire | Bontrager Kwaremont Comp | Giant Gavia Fondo 2 |
| Hub | Formula RX-142, Formula RX-512 | not listed |
| Rim | Bontrager Paradigm 23 | not listed |
| Rotor | Tektro TR160 | Giant MPH |
| Headset | Bontrager Expander Plug | Giant OverDrive |
| Saddle | Trek Verse | Giant Approach |
| Frame | not listed | Giant Contend |
| Bottom bracket | not listed | Shimano BB-RS501 |
| Wheelset | not listed | Giant P-R2 Disc |
| Brake | not listed | Shimano 105 Di2 |
| Handlebar | not listed | Giant D-Fuse SL |
| Stem | not listed | Giant Contact |
| Grips | not listed | Velo Cork tape with gel |
| Seatpost | not listed | Giant D-Fuse |
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