Which size or configuration labels have geometry for the 2018 Cannondale Synapse Carbon Disc eTap?

Geometry is listed for 48, 51, 54, 56, 58, and 61.

What are the reach and stack of the 2018 Cannondale Synapse Carbon Disc eTap in size 56?

In size 56, reach is 386 mm and stack is 590 mm.

What is the head tube angle of the 2018 Cannondale Synapse Carbon Disc eTap?

The head tube angle is 73 degrees in size 56.

What does the 2018 Cannondale Synapse Carbon Disc RED eTap ship with?

The stock build includes Cannondale Synapse, Synapse, SRAM RED ETAP HRD, and Fulcrum 500.

Which years of the Cannondale Synapse are on Quiver?

Quiver has the Cannondale Synapse for 2018, 2025, 2021, 2020, 2019, 2016, and 2015.

2018 Cannondale Synapse Carbon Disc eTap geometry and specs

Key facts

Brand: Cannondale
Model: Synapse
Model year: 2018
Frame: Carbon Disc eTap
Type: Road
Geometry labels: 48, 51, 54, 56, 58, and 61
Drivetrain: SRAM RED E-TAP
Fork: Synapse
Wheels: Fulcrum 500
Geometry: Some measurements unavailable
Checked: Oct 24, 2026

Geometry by size

2018 Cannondale Synapse Carbon Disc eTap geometry by size
Measurement	48	51	54	56	58	61
Reach(mm)	Not available	377	382	386	393	402
Stack(mm)	Not available	550	570	590	610	640
Head tube angle(°)	Not available	71.7	71.7	73	73	73
Seat tube angle(°)	Not available	74.3	73.9	73.5	73	72.5
Effective top tube(mm)	Not available	531	547	561	579	604
Wheelbase(mm)	Not available	994	1008	995	1009	1028
BB drop(mm)	Not available	Not available	73	73	70	70
BB height(mm)	Not available	Not available	272	272	275	275
Standover(mm)	Not available	742	773	804	833	868
Seat tube length(mm)	407	443	480	520	550	590
Head tube length(mm)	122	137	161	173	197	229

Not available

Requested. Requests decide what we research next.

How to read a geometry chart

Stock build

18 parts

Frame

Cannondale Synapse

Frame

Suspension

Synapse

Fork

Drivetrain

SRAM RED ETAP HRD

Shifter

SRAM RED E-TAP

Derailleur

Derailleur

Cassette

Chain

Crankset

Wheels & Tires

Fulcrum 500

Wheelset

Vittoria Rubino Pro

TireTPI 100 TPITubeless ready

Fulcrum 500 DB

Rim

Brakes

SRAM RED hydro

Brake

SRAM RED eTap HRD

Brake

Cockpit

Cannondale C1 Ultralight

Handlebar

Cannondale SAVE

Stem

Synapse Si

Headset

Seatpost & Saddle

Cannondale SAVE

Seatpost

Fabric Scoop

Saddle

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Quick answers

Which size or configuration labels have geometry for the 2018 Cannondale Synapse Carbon Disc eTap?: Geometry is listed for 48, 51, 54, 56, 58, and 61.
What are the reach and stack of the 2018 Cannondale Synapse Carbon Disc eTap in size 56?: In size 56, reach is 386 mm and stack is 590 mm.
What is the head tube angle of the 2018 Cannondale Synapse Carbon Disc eTap?: The head tube angle is 73 degrees in size 56.
What does the 2018 Cannondale Synapse Carbon Disc RED eTap ship with?: The stock build includes Cannondale Synapse, Synapse, SRAM RED ETAP HRD, and Fulcrum 500.
Which years of the Cannondale Synapse are on Quiver?: Quiver has the Cannondale Synapse for 2018, 2025, 2021, 2020, 2019, 2016, and 2015.