2023 Trek FX Midstep Gen 3 vs 2021 Giant Roam 4 Disc
The S is the Giant Roam 4 Disc size closest to your S Trek FX Midstep Gen 3. 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 Roam 4 Disc
Compared with the Trek FX Midstep Gen 3 in S, the Giant Roam 4 Disc in S places the top of the head tube 52 mm higher and 20 mm further forward, relative to the bottom bracket. Its wheelbase is 33 mm longer, which can contribute to stability at speed.
- Frame stack
- +52 mm
- Higher front end
- Frame reach
- +20 mm
- Longer frame reach
- Wheelbase
- +33 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
We can't draw these frames yet. The Trek FX Midstep Gen 3 numbers we have for size S are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek FX Midstep Gen 3 S | Giant Roam 4 Disc S | Difference |
|---|---|---|---|
| Reach | 384 | 404 | +20 mm |
| Stack | 554 | 606 | +52 mm |
| Head tube angle | 70.5° | 70.5° | ±0.0° |
| Effective top tube | 537 | not listed | |
| Chainstay length | 450 | 450 | ±0 mm |
| Wheelbase | 1055 | 1088 | +33 mm |
| BB drop | 65 | 62 | −3 mm |
| BB height | 296 | not listed | |
| Standover | 711 | 725 | +14 mm |
| Seat tube length | 381 | 420 | +39 mm |
| Head tube length | 130 | 115 | −15 mm |
| Seat tube angle | not listed | 73.0° |
Differences are the Giant Roam 4 Disc minus the Trek FX Midstep Gen 3. Full charts: 2023 Trek FX Midstep Gen 3, 2021 Giant Roam 4 Disc.
Where each sits in its class
Trek FX Midstep Gen 3Giant Roam 4 Disc
Each bike is ranked against the other gravel 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 FX Midstep Gen 31 Midstep Gen 3 | Giant Roam 4 DiscRoam 4 Disc |
|---|---|---|
| Frame | Trek Alpha Gold | not listed |
| Fork | Trek FX | SR Suntour NEX |
| Shifter | Shimano Altus EF500 | Shimano Altus |
| Derailleur | Shimano Tourney TY510, Shimano Acera M310 | Shimano Tourney, Shimano Altus |
| Cassette | SunRace MFM300 | Shimano HG200 |
| Chain | KMC Z7 | KMC Z7 |
| Bottom bracket | VP BC73 | not listed |
| Tire | Bontrager H2 | Giant Crosscut |
| Hub | Formula FM21, Formula FM31 | not listed |
| Rim | Bontrager Connection | not listed |
| Wheelset | not listed | Giant GX03 |
| Brake | not listed | Tektro TKB-172 |
| Handlebar | not listed | Giant Sport XC |
| Stem | not listed | Giant Sport |
| Seatpost | not listed | Giant D-Fuse |
| Saddle | not listed | Giant Sport Comfort |
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