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Specialized Tarmac SL8 2024
Curve GMX+ 2019 ×
Curve GMX+ 2018 ×
Waterford 1900 2023 ×
Overlay
Stack and reach
Bike geometry overlay
Wireframe side views of compared bikes aligned at the bottom bracket. Hover a frame to isolate it, or a measurement to see it drawn from its origin.
Some tubes use estimated defaults where OEM values were missing.
Geometry by size
Measurement
Curve
GMX+ 2019
S
M
L
XL
Curve
GMX+ 2018
S
M
L
XL
Waterford
1900 2023
50
54
58
62
Stack
mm
606
606
606
Reach
mm
386
386
382
−4
Head tube angle
°
70.5
70.5
72.0
+1.5
Seat tube angle
°
72.5
72.5
73.0
+0.5
Chainstay
mm
455
455
457
+2
Wheelbase
mm
1108
1108
1084
−24
BB drop
mm
68
68
74
+6
BB height
mm
—
—
—
Standover
mm
—
—
—
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Relaxed/Aggressiveness
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More aggressive
Reach →
Stack →
GMX+ · L
GMX+ · L
1900 · 58
Cockpit for the selected size
Part
GMX+ L
GMX+ L
1900 58
Stem
110 mm
110 mm
110 mm
Bar
440 mm
440 mm
440 mm
Crank
175 mm
175 mm
175 mm
