Kona Sutra vs Surly Bridge Club

Both published charts held against each other, on the specs that decide what the bike carries.

The short answer

The Bridge Club is ahead on fork cargo mounts and price. Nothing here goes the other way.

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 6 things we can compare come out differently. The rest are close enough not to decide anything.

Fork cargo mounts

only the Bridge Club publishes somewhere to bolt a cage
Kona Sutra
None published
Surly Bridge Club
Published

Cage mounts on the fork blades. This moves weight low and off the bars, which is where a heavy bar roll does the most to the steering.

Chainstay

10mm longer on the Sutra
Kona Sutra
445mm
Surly Bridge Club
435mm

The gap between seat tube and rear axle, which a rack, panniers and your heels all share. Longer is more room for a load; shorter is a more compact bike. Which you want is a preference, not a winner.

From

$150 between them
Kona Sutra
$1,599
Surly Bridge Club
$1,449

Manufacturer's cheapest complete build. Every spec above belongs to the frame and does not change between builds of the same model, so the cheapest build of the right frame is usually the right answer.

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.

Kona SutraSurly Bridge Club
Frame bag space1674 cm²1684 cm²
Rear rackNot publishedNot published
Fork cargo mountsNone publishedPublished
Frame bottle positionsnot published as a count2
Chainstay445mm435mm
From$1,599$1,449
Sizes65
Frame4130 Chromoly, Natch tubing, double-butted main triangle

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.

Kona Sutra — 58. Front triangle ≈ 1674 cm² · effective top tube 605mm · seat tube 580mm
Kona Sutra in size 58, drawn to scale from Kona's published geometry. The shaded area is the front triangle — roughly 1674 cm² of space for a frame bag. Wheels are indicative; frame lines are accurate.
Surly Bridge Club — X-Large. Front triangle ≈ 1684 cm² · effective top tube 630mm · seat tube 558.8mm
Surly Bridge Club in size X-Large, drawn to scale from Surly's published geometry. The shaded area is the front triangle — roughly 1684 cm² of space for a frame bag. Wheels are indicative; frame lines are accurate.
Kona
Sutra
$1,599 · 6 sizes
Full geometry and which bags fit →
Surly
Bridge Club
$1,449 · 5 sizes
Full geometry and which bags fit →

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