bike geometry

BMC URS 2026

Compare size-specific bike geometry, including reach, stack, angles, wheelbase and the measurements that influence fit and handling.

BMC › URS › Standard › URS

URS geometry measurements

Choose the recorded size and configuration. Geometry figures can change by size; RideDNA does not collapse those values into one misleading answer.

What is the reach of the BMC URS 2026?

Reach is the horizontal distance from the bottom bracket to the top of the head tube. Also searched as frame reach.

Configuration	Size	Reach	Source
URS geometry	S	399.6 mm	RideDNA-derived
URS geometry	XS	389.6 mm	RideDNA-derived
URS geometry	M	410.1 mm	RideDNA-derived
URS geometry	L	419.8 mm	RideDNA-derived
URS geometry	XL	429.5 mm	RideDNA-derived

What is the stack of the BMC URS 2026?

Stack is the vertical distance from the bottom bracket to the top of the head tube. Also searched as frame stack.

Configuration	Size	Stack	Source
URS geometry	S	560.3 mm	RideDNA-derived
URS geometry	XS	560.3 mm	RideDNA-derived
URS geometry	M	580.1 mm	RideDNA-derived
URS geometry	L	610.1 mm	RideDNA-derived
URS geometry	XL	640 mm	Manufacturer-published

What is the effective top tube of the BMC URS 2026?

Effective top tube is the horizontal distance between the head-tube and seat-tube centerlines. Also searched as ETT, virtual top tube, horizontal top tube.

Configuration	Size	Effective top tube	Source
URS geometry	S	555 mm	Recorded geometry
URS geometry	XS	545 mm	Recorded geometry
URS geometry	M	571 mm	Recorded geometry
URS geometry	L	589 mm	Recorded geometry
URS geometry	XL	607 mm	Recorded geometry

What is the head tube angle of the BMC URS 2026?

Head tube angle describes the steering-axis angle relative to the ground. Also searched as HTA, head angle, steering angle.

Configuration	Size	Head tube angle	Source
URS geometry	S	69 °	Recorded geometry
URS geometry	XS	69 °	Recorded geometry
URS geometry	M	69.5 °	Recorded geometry
URS geometry	L	69.5 °	Recorded geometry
URS geometry	XL	69.5 °	Recorded geometry

What is the seat tube angle of the BMC URS 2026?

Seat tube angle describes the seat-tube angle relative to the ground. Also searched as STA, seat angle, effective seat angle.

Configuration	Size	Seat tube angle	Source
URS geometry	S	74.5 °	Recorded geometry
URS geometry	XS	74.5 °	Recorded geometry
URS geometry	M	74.5 °	Recorded geometry
URS geometry	L	74.5 °	Recorded geometry
URS geometry	XL	74.5 °	Recorded geometry

What is the trail of the BMC URS 2026?

Trail is the ground distance between the steering-axis intercept and the front tire contact point. Also searched as fork trail, mechanical trail.

Configuration	Size	Trail	Source
URS geometry	S	83.1 mm	RideDNA-derived
URS geometry	XS	83.1 mm	RideDNA-derived
URS geometry	M	85.1 mm	RideDNA-derived
URS geometry	L	85.1 mm	RideDNA-derived
URS geometry	XL	85.1 mm	RideDNA-derived

What is the wheelbase of the BMC URS 2026?

Wheelbase is the distance between the front and rear wheel axles. Also searched as axle-to-axle length.

Configuration	Size	Wheelbase	Source
URS geometry	S	1062.3 mm	RideDNA-derived
URS geometry	XS	1052.3 mm	RideDNA-derived
URS geometry	M	1069.9 mm	RideDNA-derived
URS geometry	L	1090.8 mm	RideDNA-derived
URS geometry	XL	1111.7 mm	RideDNA-derived

What is the chainstay length of the BMC URS 2026?

Chainstay length, also called rear center, is the distance from the bottom bracket to the rear axle. Also searched as Chainstay, rear center, rear centre.

Configuration	Size	Chainstay length	Source
URS geometry	S	430 mm	Recorded geometry
URS geometry	XS	430 mm	Recorded geometry
URS geometry	M	430 mm	Recorded geometry
URS geometry	L	430 mm	Recorded geometry
URS geometry	XL	430 mm	Recorded geometry

What is the bottom bracket drop of the BMC URS 2026?

Bottom bracket drop is the vertical distance from the wheel-axle line down to the bottom bracket. Also searched as BB drop.

Configuration	Size	Bottom bracket drop	Source
URS geometry	S	76 mm	Recorded geometry
URS geometry	XS	76 mm	Recorded geometry
URS geometry	M	76 mm	Recorded geometry
URS geometry	L	76 mm	Recorded geometry
URS geometry	XL	76 mm	Recorded geometry

What is the bottom bracket height of the BMC URS 2026?

Bottom bracket height is the vertical distance from the ground to the bottom bracket. Also searched as BB height.

Configuration	Size	Bottom bracket height	Source
URS geometry	S	280 mm	RideDNA-derived
URS geometry	XS	280 mm	RideDNA-derived
URS geometry	M	280 mm	RideDNA-derived
URS geometry	L	280 mm	RideDNA-derived
URS geometry	XL	280 mm	RideDNA-derived

What is the front center of the BMC URS 2026?

Front center is the distance from the bottom bracket to the front wheel axle. Also searched as front centre.

Configuration	Size	Front center	Source
URS geometry	S	643.6 mm	RideDNA-derived
URS geometry	XS	633.7 mm	RideDNA-derived
URS geometry	M	651.1 mm	RideDNA-derived
URS geometry	L	671.8 mm	RideDNA-derived
URS geometry	XL	692.6 mm	RideDNA-derived

What is the fork offset of the BMC URS 2026?

Fork offset is the perpendicular distance between the steering axis and the front axle. Also searched as fork rake, rake.

Configuration	Size	Fork offset	Source
URS geometry	S	50 mm	Manufacturer-published
URS geometry	XS	50 mm	Manufacturer-published
URS geometry	M	45 mm	Manufacturer-published
URS geometry	L	45 mm	Manufacturer-published
URS geometry	XL	45 mm	Manufacturer-published

What is the head tube length of the BMC URS 2026?

Head tube length is the measured length of the frame's head tube. Also searched as Head tube, head tube.

Configuration	Size	Head tube length	Source
URS geometry	S	133 mm	Recorded geometry
URS geometry	XS	133 mm	Recorded geometry
URS geometry	M	140 mm	Recorded geometry
URS geometry	L	172 mm	Recorded geometry
URS geometry	XL	204 mm	Recorded geometry

What is the seat tube length of the BMC URS 2026?

Seat tube length is the recorded length of the frame's seat tube; measurement conventions can differ by manufacturer. Also searched as Seat tube, seat tube, frame size.

Configuration	Size	Seat tube length	Source
URS geometry	S	445 mm	Recorded geometry
URS geometry	XS	430 mm	Recorded geometry
URS geometry	M	475 mm	Recorded geometry
URS geometry	L	505 mm	Recorded geometry
URS geometry	XL	540 mm	Recorded geometry

What is the standover height of the BMC URS 2026?

Standover height is the ground-to-top-tube height at the manufacturer's stated measurement point. Also searched as Standover, stand over height, standover clearance.

Configuration	Size	Standover height	Source
URS geometry	S	748.1 mm	RideDNA-derived
URS geometry	XS	740.9 mm	RideDNA-derived
URS geometry	M	772.4 mm	RideDNA-derived
URS geometry	L	801.9 mm	RideDNA-derived
URS geometry	XL	833.7 mm	RideDNA-derived

What is the fork length of the BMC URS 2026?

Fork length is the axle-to-crown distance recorded for the fork. Also searched as axle to crown, A2C.

Configuration	Size	Fork length	Source
URS geometry	S	405 mm	Manufacturer-published
URS geometry	XS	405 mm	Manufacturer-published
URS geometry	M	415 mm	Manufacturer-published
URS geometry	L	415 mm	Manufacturer-published
URS geometry	XL	415 mm	Manufacturer-published

What is the wheel flop of the BMC URS 2026?

Wheel flop is a calculated steering-geometry value based on trail and head tube angle. Also searched as flop.

Configuration	Size	Wheel flop	Source
URS geometry	S	27.8 mm	RideDNA-derived
URS geometry	XS	27.8 mm	RideDNA-derived
URS geometry	M	27.9 mm	RideDNA-derived
URS geometry	L	27.9 mm	RideDNA-derived
URS geometry	XL	27.9 mm	RideDNA-derived

Geometry

Available sizes: S, XS, M, L, XL.

URS geometry

Jump to size: XS · S · M · L · XL

URS geometry geometry by size
Size	Reach	Stack	ETT	HTA	STA	Trail	Wheelbase	Chainstay	BB drop	BB height	Front center	Fork offset	Head tube	Seat tube	Standover	Fork length	Wheel flop	Max tire
XS	389.6 mm^*	560.3 mm^*	545 mm^‡	69 °^‡	74.5 °^‡	83.1 mm^*	1052.3 mm^*	430 mm^‡	76 mm^‡†	280 mm^*†	633.7 mm^*	50 mm	133 mm^‡	430 mm^‡	740.9 mm^*	405 mm	27.8 mm^*†	†
S	399.6 mm^*	560.3 mm^*	555 mm^‡	69 °^‡	74.5 °^‡	83.1 mm^*	1062.3 mm^*	430 mm^‡	76 mm^‡†	280 mm^*†	643.6 mm^*	50 mm	133 mm^‡	445 mm^‡	748.1 mm^*	405 mm	27.8 mm^*†	†
M	410.1 mm^*	580.1 mm^*	571 mm^‡	69.5 °^‡	74.5 °^‡	85.1 mm^*	1069.9 mm^*	430 mm^‡	76 mm^‡†	280 mm^*†	651.1 mm^*	45 mm	140 mm^‡	475 mm^‡	772.4 mm^*	415 mm	27.9 mm^*†	†
L	419.8 mm^*	610.1 mm^*	589 mm^‡	69.5 °^‡	74.5 °^‡	85.1 mm^*	1090.8 mm^*	430 mm^‡	76 mm^‡†	280 mm^*†	671.8 mm^*	45 mm	172 mm^‡	505 mm^‡	801.9 mm^*	415 mm	27.9 mm^*†	†
XL	429.5 mm^*	640 mm	607 mm^‡	69.5 °^‡	74.5 °^‡	85.1 mm^*	1111.7 mm^*	430 mm^‡	76 mm^‡†	280 mm^*†	692.6 mm^*	45 mm	204 mm^‡	540 mm^‡	833.7 mm^*	415 mm	27.9 mm^*†	†

Length measurements are in millimeters; HTA and STA are in degrees. ETT means effective top tube. Values prioritize RideDNA calculations. * RideDNA calculated (including corrections where published values differ). Unmarked values are manufacturer-published; matching independently calculated values are identified in their source notes. † Manufacturer did not publish this dimension; † alone means no reliable value is available. ‡ Staff reference or source not confirmed; see the source note. Open Geometry Audit for the original published values, calculated geometry, and deltas.

Size-to-size changes

Differences are calculated from the recorded values; they are not fit recommendations.

URS geometry: XS → S — Reach +10 mm, Stack +0 mm, ETT +10 mm, HTA +0 °, STA +0 °, Trail +0 mm, Wheelbase +10 mm, Chainstay +0 mm, BB drop +0 mm, BB height +0 mm, Front center +9.9 mm, Fork offset +0 mm, Head tube +0 mm, Seat tube +15 mm, Standover +7.2 mm, Fork length +0 mm, Wheel flop +0 mm
URS geometry: S → M — Reach +10.5 mm, Stack +19.8 mm, ETT +16 mm, HTA +0.5 °, STA +0 °, Trail +2 mm, Wheelbase +7.6 mm, Chainstay +0 mm, BB drop +0 mm, BB height +0 mm, Front center +7.5 mm, Fork offset -5 mm, Head tube +7 mm, Seat tube +30 mm, Standover +24.3 mm, Fork length +10 mm, Wheel flop +0.1 mm
URS geometry: M → L — Reach +9.7 mm, Stack +30 mm, ETT +18 mm, HTA +0 °, STA +0 °, Trail +0 mm, Wheelbase +20.9 mm, Chainstay +0 mm, BB drop +0 mm, BB height +0 mm, Front center +20.7 mm, Fork offset +0 mm, Head tube +32 mm, Seat tube +30 mm, Standover +29.5 mm, Fork length +0 mm, Wheel flop +0 mm
URS geometry: L → XL — Reach +9.7 mm, Stack +29.9 mm, ETT +18 mm, HTA +0 °, STA +0 °, Trail +0 mm, Wheelbase +20.9 mm, Chainstay +0 mm, BB drop +0 mm, BB height +0 mm, Front center +20.8 mm, Fork offset +0 mm, Head tube +32 mm, Seat tube +35 mm, Standover +31.8 mm, Fork length +0 mm, Wheel flop +0 mm

RideDNA-derived values

These deterministic calculations use the recorded inputs above. They are separate from recorded facts and are not fit recommendations.

URS geometry size S stack Reach Ratio: 1.4
URS geometry size XS stack Reach Ratio: 1.44
URS geometry size M stack Reach Ratio: 1.41
URS geometry size L stack Reach Ratio: 1.45
URS geometry size XL stack Reach Ratio: 1.49