2025 Kona Sutra vs 2025 Trek FX Disc
The 45 is the Trek FX Disc size closest to your 50 Kona Sutra. 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 Trek FX Disc
Compared with the Kona Sutra in 50, the Trek FX Disc in 45 places the top of the head tube at about the same height and 5 mm further forward, relative to the bottom bracket. Its wheelbase is 12 mm longer, which can contribute to stability at speed.
- Frame stack
- −2 mm
- About the same height
- Frame reach
- +5 mm
- Longer frame reach
- Wheelbase
- +12 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- +2 mm
- About the same
The two frames
Kona Sutra, 50Trek FX Disc, 45Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Kona Sutra 50 | Trek FX Disc 45 | Difference |
|---|---|---|---|
| Reach | 380 | 385.0 | +5 mm |
| Stack | 570 | 568.0 | −2 mm |
| Head tube angle | 70.5 | 70.5 | ±0.0° |
| Seat tube angle | 74.5 | 74.5 | ±0.0° |
| Effective top tube | 538 | 543.0 | +5 mm |
| Chainstay length | 445 | 447.0 | +2 mm |
| Wheelbase | 1047 | 1059.0 | +12 mm |
| BB drop | 74 | 65.0 | −9 mm |
| BB height | 281 | 285.0 | +4 mm |
| Standover | 770 | 715.0 | −55 mm |
| Seat tube length | 500 | 375.0 | −125 mm |
| Fork length | 415 | not listed | |
| Head tube length | 125 | 140.0 | +15 mm |
Differences are the Trek FX Disc minus the Kona Sutra. Full charts: 2025 Kona Sutra, 2025 Trek FX Disc.
Where each sits in its class
Kona SutraTrek FX 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 | Kona SutraSutra | Trek FX Disc3 Disc |
|---|---|---|
| Frame | Kona Cromoly Butted | Trek Alpha Gold Aluminum |
| Fork | Kona Project Two | Trek FX |
| Shifter | microSHIFT Sword | Shimano CUES U6000 |
| Derailleur | microSHIFT SWORD | Shimano CUES U6000 GS |
| Cassette | microSHIFT SWORD | Shimano LG300 |
| Chain | KMC X10 | Shimano LG500 |
| Crankset | PROWHEEL | Prowheel Alloy |
| Chainring | Prowheel | Prowheel 40T narrow-wide |
| Bottom bracket | Prowheel BB68+ | not listed |
| Wheelset | WTB ST i23 TCS 2.0 | Bontrager Tubeless Ready Disc |
| Tire | Schwalbe Marathon Mondial | Bontrager H2 |
| Brake | TRP HDC711C | Shimano UR300 |
| Rotor | TRP TR | Shimano SM-RT26 |
| Handlebar | Kona Road | Bontrager Satellite Plus |
| Stem | Kona Road | Bontrager Comp |
| Grips | Brooks Microfiber | Bontrager Satellite IsoZone Plus |
| Headset | FSA No.1/No.10 | not listed |
| Seatpost | Kona Deluxe Thumb | Alloy |
| Saddle | Brooks B17 | Bontrager H1 |
| Pedals | not listed | Bontrager City |
| Hub | not listed | Formula DC-20 front, Formula DC-22 rear |
| Rim | not listed | Bontrager Tubeless Ready Disc |
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