bike geometry

R5 2026

Name: R5 2026
Brand: Cervelo

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

Cervelo › R5 › Standard › R5

R5 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 R5?

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
R5 geometry	48	368.4 mm	RideDNA-derived
R5 geometry	51	376.9 mm	RideDNA-derived
R5 geometry	54	383.7 mm	RideDNA-derived
R5 geometry	56	391.5 mm	RideDNA-derived
R5 geometry	58	400.4 mm	RideDNA-derived
R5 geometry	61	408.3 mm	RideDNA-derived

What is the stack of the R5?

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
R5 geometry	48	496.1 mm	RideDNA-derived
R5 geometry	51	519.9 mm	RideDNA-derived
R5 geometry	54	544.6 mm	RideDNA-derived
R5 geometry	56	567.5 mm	RideDNA-derived
R5 geometry	58	590.7 mm	RideDNA-derived
R5 geometry	61	610.7 mm	RideDNA-derived

What is the effective top tube of the R5?

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
R5 geometry	48	506 mm	RideDNA-derived
R5 geometry	51	526 mm	RideDNA-derived
R5 geometry	54	545 mm	RideDNA-derived
R5 geometry	56	565 mm	RideDNA-derived
R5 geometry	58	581 mm	RideDNA-derived
R5 geometry	61	595 mm	RideDNA-derived

What is the head tube angle of the R5?

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
R5 geometry	48	71 °	RideDNA-derived
R5 geometry	51	72 °	RideDNA-derived
R5 geometry	54	73 °	RideDNA-derived
R5 geometry	56	73 °	RideDNA-derived
R5 geometry	58	73 °	RideDNA-derived
R5 geometry	61	73 °	RideDNA-derived

What is the seat tube angle of the R5?

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
R5 geometry	48	74.5 °	RideDNA-derived
R5 geometry	51	74 °	RideDNA-derived
R5 geometry	54	73.5 °	RideDNA-derived
R5 geometry	56	73 °	RideDNA-derived
R5 geometry	58	73 °	RideDNA-derived
R5 geometry	61	73 °	RideDNA-derived

What is the wheelbase of the R5?

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

Configuration	Size	Wheelbase	Source
R5 geometry	48	976.5 mm	RideDNA-derived
R5 geometry	51	977.9 mm	RideDNA-derived
R5 geometry	54	978.4 mm	RideDNA-derived
R5 geometry	56	993.2 mm	RideDNA-derived
R5 geometry	58	1010.4 mm	RideDNA-derived
R5 geometry	61	1024.4 mm	RideDNA-derived

What is the chainstay length of the R5?

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
R5 geometry	48	402.8 mm	RideDNA-derived
R5 geometry	51	402.8 mm	RideDNA-derived
R5 geometry	54	403.3 mm	RideDNA-derived
R5 geometry	56	403.3 mm	RideDNA-derived
R5 geometry	58	403.7 mm	RideDNA-derived
R5 geometry	61	403.7 mm	RideDNA-derived

What is the bottom bracket height of the R5?

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
R5 geometry	48	260.5 mm	RideDNA-derived
R5 geometry	51	260.5 mm	RideDNA-derived
R5 geometry	54	263 mm	RideDNA-derived
R5 geometry	56	263 mm	RideDNA-derived
R5 geometry	58	265.5 mm	RideDNA-derived
R5 geometry	61	265.5 mm	RideDNA-derived

What is the front center of the R5?

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

Configuration	Size	Front center	Source
R5 geometry	48	578.8 mm	RideDNA-derived
R5 geometry	51	580.2 mm	RideDNA-derived
R5 geometry	54	579.9 mm	RideDNA-derived
R5 geometry	56	594.6 mm	RideDNA-derived
R5 geometry	58	610.9 mm	RideDNA-derived
R5 geometry	61	624.8 mm	RideDNA-derived

What is the fork offset of the R5?

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
R5 geometry	48	57.5 mm	RideDNA-derived
R5 geometry	51	51.5 mm	RideDNA-derived
R5 geometry	54	45.5 mm	RideDNA-derived
R5 geometry	56	45.5 mm	RideDNA-derived
R5 geometry	58	45.5 mm	RideDNA-derived
R5 geometry	61	45.5 mm	RideDNA-derived

What is the head tube length of the R5?

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
R5 geometry	48	89.6 mm	RideDNA-derived
R5 geometry	51	109 mm	RideDNA-derived
R5 geometry	54	132 mm	RideDNA-derived
R5 geometry	56	156 mm	RideDNA-derived
R5 geometry	58	182.8 mm	RideDNA-derived
R5 geometry	61	203.7 mm	RideDNA-derived

What is the seat tube length of the R5?

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
R5 geometry	48	480 mm	RideDNA-derived
R5 geometry	51	510 mm	RideDNA-derived
R5 geometry	54	540 mm	RideDNA-derived
R5 geometry	56	560 mm	RideDNA-derived
R5 geometry	58	580 mm	RideDNA-derived
R5 geometry	61	610 mm	RideDNA-derived

What is the standover height of the R5?

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
R5 geometry	48	699.7 mm	RideDNA-derived
R5 geometry	51	731 mm	RideDNA-derived
R5 geometry	54	757.4 mm	RideDNA-derived
R5 geometry	56	779.1 mm	RideDNA-derived
R5 geometry	58	803.4 mm	RideDNA-derived
R5 geometry	61	822.2 mm	RideDNA-derived

What is the fork length of the R5?

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

Configuration	Size	Fork length	Source
R5 geometry	48	374 mm	RideDNA-derived
R5 geometry	51	374 mm	RideDNA-derived
R5 geometry	54	374 mm	RideDNA-derived
R5 geometry	56	374 mm	RideDNA-derived
R5 geometry	58	374 mm	RideDNA-derived
R5 geometry	61	374 mm	RideDNA-derived

What is the wheel flop of the R5?

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

Configuration	Size	Wheel flop	Source
R5 geometry	48	17 mm	RideDNA-derived
R5 geometry	51	16.3 mm	RideDNA-derived
R5 geometry	54	15.5 mm	RideDNA-derived
R5 geometry	56	15.5 mm	RideDNA-derived
R5 geometry	58	15.5 mm	RideDNA-derived
R5 geometry	61	15.5 mm	RideDNA-derived

Geometry

Available sizes: 48, 51, 54, 56, 58, 61.

R5 geometry

Jump to size: 48 · 51 · 54 · 56 · 58 · 61

R5 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
48	368.4 mm	496.1 mm	506 mm	71 °	74.5 °	—	976.5 mm	402.8 mm	—	260.5 mm	578.8 mm	57.5 mm	89.6 mm	480 mm	699.7 mm	374 mm	17 mm	—
51	376.9 mm	519.9 mm	526 mm	72 °	74 °	—	977.9 mm	402.8 mm	—	260.5 mm	580.2 mm	51.5 mm	109 mm	510 mm	731 mm	374 mm	16.3 mm	—
54	383.7 mm	544.6 mm	545 mm	73 °	73.5 °	—	978.4 mm	403.3 mm	—	263 mm	579.9 mm	45.5 mm	132 mm	540 mm	757.4 mm	374 mm	15.5 mm	—
56	391.5 mm	567.5 mm	565 mm	73 °	73 °	—	993.2 mm	403.3 mm	—	263 mm	594.6 mm	45.5 mm	156 mm	560 mm	779.1 mm	374 mm	15.5 mm	—
58	400.4 mm	590.7 mm	581 mm	73 °	73 °	—	1010.4 mm	403.7 mm	—	265.5 mm	610.9 mm	45.5 mm	182.8 mm	580 mm	803.4 mm	374 mm	15.5 mm	—
61	408.3 mm	610.7 mm	595 mm	73 °	73 °	—	1024.4 mm	403.7 mm	—	265.5 mm	624.8 mm	45.5 mm	203.7 mm	610 mm	822.2 mm	374 mm	15.5 mm	—

Length measurements are in millimeters; HTA and STA are in degrees. ETT means effective top tube.

Size-to-size changes

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

R5 geometry: 48 → 51 — Reach +8.5 mm, Stack +23.8 mm, ETT +20 mm, HTA +1 °, STA -0.5 °, Wheelbase +1.4 mm, Chainstay +0 mm, BB height +0 mm, Front center +1.4 mm, Fork offset -6 mm, Head tube +19.4 mm, Seat tube +30 mm, Standover +31.3 mm, Fork length +0 mm, Wheel flop -0.7 mm
R5 geometry: 51 → 54 — Reach +6.8 mm, Stack +24.7 mm, ETT +19 mm, HTA +1 °, STA -0.5 °, Wheelbase +0.5 mm, Chainstay +0.5 mm, BB height +2.5 mm, Front center -0.3 mm, Fork offset -6 mm, Head tube +23 mm, Seat tube +30 mm, Standover +26.4 mm, Fork length +0 mm, Wheel flop -0.8 mm
R5 geometry: 54 → 56 — Reach +7.8 mm, Stack +22.9 mm, ETT +20 mm, HTA +0 °, STA -0.5 °, Wheelbase +14.8 mm, Chainstay +0 mm, BB height +0 mm, Front center +14.7 mm, Fork offset +0 mm, Head tube +24 mm, Seat tube +20 mm, Standover +21.7 mm, Fork length +0 mm, Wheel flop +0 mm
R5 geometry: 56 → 58 — Reach +8.9 mm, Stack +23.2 mm, ETT +16 mm, HTA +0 °, STA +0 °, Wheelbase +17.2 mm, Chainstay +0.4 mm, BB height +2.5 mm, Front center +16.3 mm, Fork offset +0 mm, Head tube +26.8 mm, Seat tube +20 mm, Standover +24.3 mm, Fork length +0 mm, Wheel flop +0 mm
R5 geometry: 58 → 61 — Reach +7.9 mm, Stack +20 mm, ETT +14 mm, HTA +0 °, STA +0 °, Wheelbase +14 mm, Chainstay +0 mm, BB height +0 mm, Front center +13.9 mm, Fork offset +0 mm, Head tube +20.9 mm, Seat tube +30 mm, Standover +18.8 mm, Fork length +0 mm, Wheel flop +0 mm

RideDNA-derived values

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

R5 geometry size 48 stack Reach Ratio: 1.35
R5 geometry size 51 stack Reach Ratio: 1.38
R5 geometry size 54 stack Reach Ratio: 1.42
R5 geometry size 56 stack Reach Ratio: 1.45
R5 geometry size 58 stack Reach Ratio: 1.48
R5 geometry size 61 stack Reach Ratio: 1.5