Sum (non-Pro) 2025

Road

Geometry by size

Swipe sideways for more sizes

Measurement	XXS(44-46)	XS(47-50)	S(51-53)	M(54-56)	L(57-59)	XL(60-62)
Frame geometry
Stack	471 mm	493 mm	516 mm	540 mm	565 mm	592 mm
Reach	375 mm	382 mm	389 mm	397 mm	405 mm	414 mm
Stack / Reach	1.26	1.29	1.33	1.36	1.40	1.43
Head tube angle	71.2°	72.1°	72.7°	72.7°	72.7°	73°
Seat tube angle (effective)	75°	74.5°	74°	73.5°	73°	72.5°
Seat tube angle (actual)	—	—	—	—	—	—
Top tube (effective)	503 mm	520 mm	538 mm	557 mm	578 mm	600 mm
Head tube length	69 mm	85 mm	101 mm	126 mm	152 mm	180 mm
Seat tube length	395 mm	425 mm	460 mm	505 mm	550 mm	595 mm
Bottom bracket drop	69 mm	73 mm	77 mm	77 mm	77 mm	77 mm
Bottom bracket height	—	—	—	—	—	—
Chainstay	410 mm	410 mm	410 mm	410 mm	410 mm	410 mm
Front center	—	—	—	—	—	—
Wheelbase	967 mm	972 mm	975 mm	990 mm	1006 mm	1020 mm
Fork rake (offset)	—	—	—	—	—	—
Fork axle to crown	—	—	—	—	—	—
Trail	—	—	—	—	—	—
Standover	676 mm	700 mm	727 mm	766 mm	804 mm	841 mm
Pad / effective stack	—	—	—	—	—	—
Pad / effective reach	—	—	—	—	—	—
Cockpit
Grip reach	—	—	—	—	—	—
Grip stack	—	—	—	—	—	—
Stem length	—	—	—	—	—	—
Spacer height	—	—	—	—	—	—
Bar reach	—	—	—	—	—	—
Bar drop	—	—	—	—	—	—
Bar flare	—	—	—	—	—	—
Handlebar width	—	—	—	—	—	—
Components (informational)
Crank length	—	—	—	—	—	—
Saddle width	—	—	—	—	—	—
Seatpost length	—	—	—	—	—	—
Tire clearance	—	—	—	—	—	—
Front travel	—	—	—	—	—	—
Rear travel	—	—	—	—	—	—

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