Marin Four Corners 1 vs Surly Disc Trucker 26
Both published charts held against each other, on the specs that decide what the bike carries.
The short answer
The Four Corners 1 takes frame bag space and dropper compatibility; the Disc Trucker 26 takes tire clearance. Which matters more is your route, not a scoreboard.
Assembled from the differences below rather than written over them, so it cannot drift from the table. Every figure is the manufacturer's; nobody here has ridden either bike.
Where they differ
3 of the 7 things we can compare come out differently. The rest are close enough not to decide anything.
Frame bag space
86 cm² more on the Four Corners 1Front-triangle area at the largest size, computed from stack, reach and seat angle. It is what decides how much full-frame bag you can run, and a frame bag is the one place weight sits low and central.
Widest published tire
8mm more on the Disc Trucker 26The frame figure, not the fork's — forks are routinely cut for more rubber than the rear triangle. Loaded, tire width is also seat-pack clearance: a big tire and a sagging pack compete for the same space.
Dropper post
only the Four Corners 1 publishes dropper routingA dropper cannot be strapped to, so fitting one rules out almost every seat pack and leaves rail-mounted bags at a fraction of the volume. It is a capability and a constraint at once.
Side by side
Including the rows where the two are level, because a spec that doesn't separate them is still a spec you might be checking.
| Marin Four Corners 1 | Surly Disc Trucker 26 | |
|---|---|---|
| Frame bag space | 1625 cm² | 1539 cm² |
| Widest published tire | 45mm on 700c / 29in | 53mm on 26in |
| Rear rack | Bolts straight on | Bolts straight on |
| Fork cargo mounts | Published | Published |
| Frame bottle positions | 6 | not published as a count |
| Dropper post | Compatible | Not compatible |
| Chainstay | 443mm | 450mm |
| Sizes | 5 | 6 |
| Frame | — | 4130 Chromoly steel |
Drawn to scale
Largest published size of each, built from the charts rather than illustrated. The front triangle is the part that decides frame bag fit.
