2025 Trek FX Disc vs 2025 Kona Sutra
The 56 is the Kona Sutra size closest to your 55 Trek FX Disc. 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 Kona Sutra
Compared with the Trek FX Disc in 55, the Kona Sutra in 56 places the top of the head tube 12 mm higher and 4 mm further back, relative to the bottom bracket. Its wheelbase is 6 mm longer, which can contribute to stability at speed.
- Frame stack
- +12 mm
- Higher front end
- Frame reach
- −4 mm
- Shorter frame reach
- Wheelbase
- +6 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- −2 mm
- About the same
The two frames
Trek FX Disc, 55Kona Sutra, 56Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek FX Disc 55 | Kona Sutra 56 | Difference |
|---|---|---|---|
| Reach | 399.0 | 395 | −4 mm |
| Stack | 620.0 | 632 | +12 mm |
| Head tube angle | 71.5 | 70.5 | −1.0° |
| Seat tube angle | 73.5 | 73.0 | −0.5° |
| Effective top tube | 583.0 | 588 | +5 mm |
| Chainstay length | 447.0 | 445 | −2 mm |
| Wheelbase | 1080.0 | 1086 | +6 mm |
| BB drop | 65.0 | 70 | +5 mm |
| BB height | 285.0 | 285 | ±0 mm |
| Standover | 791.0 | 835 | +44 mm |
| Seat tube length | 465.0 | 560 | +95 mm |
| Head tube length | 190.0 | 195 | +5 mm |
| Fork length | not listed | 415 |
Differences are the Kona Sutra minus the Trek FX Disc. Full charts: 2025 Trek FX Disc, 2025 Kona Sutra.
Where each sits in its class
Trek FX DiscKona Sutra
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 Disc3 Disc | Kona SutraSutra |
|---|---|---|
| Frame | Trek Alpha Gold Aluminum | Kona Cromoly Butted |
| Fork | Trek FX | Kona Project Two |
| Shifter | Shimano CUES U6000 | microSHIFT Sword |
| Derailleur | Shimano CUES U6000 GS | microSHIFT SWORD |
| Cassette | Shimano LG300 | microSHIFT SWORD |
| Chain | Shimano LG500 | KMC X10 |
| Crankset | Prowheel Alloy | PROWHEEL |
| Chainring | Prowheel 40T narrow-wide | Prowheel |
| Pedals | Bontrager City | not listed |
| Wheelset | Bontrager Tubeless Ready Disc | WTB ST i23 TCS 2.0 |
| Tire | Bontrager H2 | Schwalbe Marathon Mondial |
| Hub | Formula DC-20 front, Formula DC-22 rear | not listed |
| Rim | Bontrager Tubeless Ready Disc | not listed |
| Brake | Shimano UR300 | TRP HDC711C |
| Rotor | Shimano SM-RT26 | TRP TR |
| Handlebar | Bontrager Satellite Plus | Kona Road |
| Stem | Bontrager Comp | Kona Road |
| Grips | Bontrager Satellite IsoZone Plus | Brooks Microfiber |
| Seatpost | Alloy | Kona Deluxe Thumb |
| Saddle | Bontrager H1 | Brooks B17 |
| Bottom bracket | not listed | Prowheel BB68+ |
| Headset | not listed | FSA No.1/No.10 |
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