Cannondale Synapse Carbon (2025)

endurance road · carbon · sizes 44–61 · tyres up to 42 mm Manufacturer’s website

Good to know: Integrated cockpit

Integrated cockpit (a one-piece bar and stem) on at least one build. Changing the length means replacing the whole cockpit, and not every length exists. Check which length the bike actually ships with before you buy.

Geometry ?

Cannondale Synapse Carbon 2025 geometry in sizes 44–61: stack 510–640 mm, reach 366–402 mm, head angle 69.8–71.3°.

	44	48	51	54	56	58	61
Stack	510 mm	530 mm	550 mm	570 mm	590 mm	610 mm	640 mm
Reach	366 mm	371 mm	376 mm	381 mm	387 mm	393 mm	402 mm
Head angle	69.8°	70.9°	71.3°	71.3°	71.3°	71.3°	71.3°
Seat angle	73°	73°	73°	73°	73°	73°	73°
Seat tube (c-t)	407 mm	407 mm	443 mm	480 mm	520 mm	550 mm	590 mm
Head tube	91 mm	108 mm	127 mm	150 mm	171 mm	196 mm	227 mm
Top tube (effective)	522 mm	533 mm	544 mm	555 mm	567 mm	580 mm	598 mm
BB drop	75 mm	75 mm	75 mm	73 mm	73 mm	70 mm	70 mm
Chainstay	425 mm	425 mm	425 mm	425 mm	430 mm	430 mm	430 mm
Wheelbase	1003 mm	1005 mm	1013 mm	1026 mm	1044 mm	1058 mm	1077 mm
Standover	714 mm	722 mm	752 mm	785 mm	815 mm	843 mm	878 mm
Fork length	393 mm	393 mm	393 mm	393 mm	393 mm	393 mm	393 mm
Fork offset	55 mm	55 mm	55 mm	55 mm	55 mm	55 mm	55 mm
Stock build by size
Cranks	165 mm	170 mm	170 mm	172.5 mm	172.5 mm	175 mm	175 mm
Stem Synapse Carbon 1	90 mm	90 mm	90 mm	100 mm	100 mm	110 mm	110 mm
Stem Synapse Carbon 2	80 mm	80 mm	90 mm	100 mm	100 mm	110 mm	110 mm
Stem angle	−6°	−6°	−6°	−6°	−6°	−6°	−6°
Bar width Synapse Carbon 1	380 mm	400 mm	400 mm	420 mm	420 mm	420 mm	420 mm
Bar width Synapse Carbon 2	400 mm	400 mm	400 mm	420 mm	420 mm	420 mm	420 mm
Seatpost setback Synapse Carbon 1	0 mm	0 mm	15 mm	15 mm	15 mm	15 mm	15 mm
Seatpost setback Synapse Carbon 5	15 mm	15 mm	15 mm	15 mm	15 mm	15 mm	15 mm

Source: cannondale.com, checked 1 Nov 2026 · bar position: worked out from published data

Older model years in the archive: Cannondale Synapse Carbon 2022–2024, Cannondale Synapse Carbon 2018–2021, Cannondale Synapse Hi-MOD / Carbon 2016

Stock build

Synapse Carbon 1

Groupset: Shimano Ultegra Di2 R8170
Cranks: Shimano Ultegra R8100 50/34 4iiii PM
Stem: Cannondale SystemBar R-One
Handlebar: Cannondale SystemBar R-One
Seatpost: Cannondale C1 Aero 27 Carbon 330 mm, 0 mm (44-48) / 15 mm (51-61) offset
Saddle: Fizik Vento Argo R5 140 mm

Synapse Carbon 2

Groupset: Shimano Ultegra Di2 R8170
Cranks: Shimano Ultegra R8100 50/34
Stem: Cannondale C1 Conceal alloy 31.8 −6°
Handlebar: Vision Trimax Aero Alloy
Seatpost: Cannondale C1 Aero 27 Carbon 330 mm, 0 mm (44-48) / 15 mm (51-61) offset
Saddle: Fizik Vento Argo X5 140 mm

Synapse Carbon 2 SmartSense

Groupset: SRAM Force AXS
Cranks: SRAM Force 46/33
Stem: Cannondale C1 Conceal alloy 31.8 −6°
Handlebar: Vision Trimax Aero Alloy
Seatpost: Cannondale C1 Aero 27 Carbon 330 mm, 0 mm (44-48) / 15 mm (51-61) offset
Saddle: Fizik Vento Argo R5 140 mm

Synapse Carbon 3 SmartSense

Groupset: SRAM Rival AXS
Cranks: SRAM Rival 46/33
Stem: Cannondale C1 Conceal alloy 31.8 −6°
Handlebar: Vision Trimax Aero Alloy
Seatpost: Cannondale C1 Aero 27 Carbon 330 mm, 0 mm (44-48) / 15 mm (51-61) offset
Saddle: Fizik Vento Argo X5 140 mm

Synapse Carbon 4

Groupset: Shimano 105 Di2 R7170
Cranks: Shimano 105 R7100 50/34
Stem: Cannondale C1 Conceal alloy 31.8 −6°
Handlebar: Vision Trimax Aero Alloy
Seatpost: Cannondale C1 Aero 27 Carbon 330 mm, 0 mm (44-48) / 15 mm (51-61) offset
Saddle: Fizik Vento Argo X5 140 mm

Synapse Carbon 5

Groupset: Shimano 105 R7100 2×12
Shifters: Shimano 105 R7120 hydraulic
Cranks: Shimano 105 R7100 50/34
Stem: Cannondale C1 Conceal alloy 31.8 −6°
Handlebar: Vision Trimax Aero Alloy
Seatpost: HollowGram 27 alloy 330 mm, 15 mm offset
Saddle: Fizik Terra Argo X7 150 mm

Synapse LAB71 SmartSense

Groupset: SRAM RED AXS 13s (E1)
Shifters: SRAM RED AXS 13-speed
Cranks: SRAM RED AXS PM 44T
Stem: Cannondale SystemBar R-One
Handlebar: Cannondale SystemBar R-One
Seatpost: Cannondale C1 Aero 27 Carbon 330 mm, 0 mm (44-48) / 15 mm (51-61) offset
Saddle: Fizik Vento Argo 00 Carbon 140 mm

Source for all builds: cannondale.com, checked 1 Nov 2026

Frames with similar geometry

Stack and reach within 12 mm of size 54 (stack 570 / reach 381 mm).

Cannondale Synapse Alloy (2026)size 54 · stack 570 / reach 381 mm Moots Vamoots CRD (2026)size 54 · stack 570 / reach 380 mm Conor Volcano (2026)size MD · stack 571 / reach 381 mm Obed Rvr (2026)size M · stack 570 / reach 380 mm Origine Axxome RS (2026)size L · stack 569 / reach 381 mm Pride Jet Rocket (2025)size M · stack 571 / reach 381 mm

Spotted a mistake or a missing build? Let me know.