Cannondale Synapse Neo

Name: Cannondale Synapse Neo
Brand: Cannondale

2025 RoadEndurance Electric bicycle Manufacturer page

Last known price: $9,349

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 34–50t / 11–34t
Gear range: 455%
Battery: 400 Wh
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 157.5–167.6
SM 165.1–177
MD 174–184
LG 181–192
XL 189–205.7

Components

19 of 27 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Synapse Neo Carbon, internal downtube battery, integrated cable routing, 148mm dropout spacing, 12mm thru-axle, SAVE, flat mount disc, kickstand compatible (K17004 mounting bracket & K17014 kickstand required) Not identified

Electric system

4 parts

Suspension

1 part

Fork

Synapse Neo Carbon, 1-1/8" to 1.5" Delta steerer, flat mount disc, internal routing, 12x110 thru-axle Not identified

Drivetrain

7 parts

Bottom bracket
- Bosch
Cassette
- Shimano Ultegra
Chain
- Shimano Ultegra
Crankset
- FSA 50/34t
Front derailleur
- Shimano Ultegra FD-R8150 2 speeds
FD-R8150
Rear derailleur
- Shimano Ultegra RD-R8150 12 speeds
RD-R8150
Shifters
- Shimano Ultegra ST-R8150
ST-R8150

Brakes

2 parts

Wheels and tires

5 parts

Front hub

HollowGram, sealed bearing 12x110mm centerlock Not identified
Rear hub

HollowGram 3-pawl, sealed bearing, 12x148mm centerlock Not identified
Rims

HollowGram R 45, Carbon, 24h front, 28h rear, 50mm deep, 21mm inner width, tubeless ready Not identified
Spokes

Stainless Steel, 14g Not identified
Tires
- Vittoria

Cockpit and contact points

7 parts

Grips
- Fabric
Handlebar
- Vision
Headset

Integrated, 1-1/8" - 1.5" Not identified
Pedals

Not Included Not identified
Saddle
- Fizik Tempo Argo R5
Seatpost
- Cannondale
Stem
- Cannondale

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 394mm

Stack 605mm

Wheelbase 1065mm

Head angle 72.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	378	386	394	401	409
Stackmm	560	578	605	633	660
Top tube lengthmm	549	563	579	595	611
Seat tube lengthmm	407	453	499	544	590
Head tube lengthmm	113	129	159	193	222
Head tube angle	70.2°	71.1°	72°	72°	72°
Seat tube angle	73°	73°	73°	73°	73°
Chainstay lengthmm	450	450	450	450	450
Wheelbasemm	1049	1055	1065	1083	1100
Front centermm	610	616	624	641	658
Bottom bracket dropmm	75	75	70	65	65
Bottom bracket heightmm	279	279	284	289	289
Standover heightmm	715	751	795	838	876
Fork rakemm	50	50	50	50	50
Trailmm	74	68	62	62	62

Not published by the manufacturer: Stack/reach ratio, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 29.0 in
Highest gear: 131.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Electric system

Battery capacity: 400 Wh

Additional specifications

Battery: Bosch Compact Powertube 400Wh
Bottom bracket standard: Bosch
Tire clearance: Maximum tire width: 45c
Tire width: 30c
Wheel material: Carbon
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

29.0 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2025
Sample: 546 bicycles with this information
Coverage: 81.8% of the class

Highest gear

131.8 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2025
Sample: 546 bicycles with this information
Coverage: 81.8% of the class

Shifting

Electronic

356 of 663 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2025
Sample: 663 bicycles with this information
Coverage: 99.4% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.1 km/h
Highest gear: 50.5 km/h

Total gear range 455%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 29.0–131.8 gear inches
Class reference (p10–p90): 26.6–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Endurance Model year: 2025
Lowest gear: 546 bicycles with this information, 81.8% of the class
Highest gear: 546 bicycles with this information, 81.8% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds
Specification	This bicycle Cannondale Synapse Neo	Cannondale Synapse Neo Allroad 1	Cannondale Synapse Neo Allroad 2
Drivetrain
Front chainrings	2	1	2
Smallest chainring	34	38	32
Largest chainring	50	38	48
Smallest sprocket	11	10	11
Largest sprocket	34	44	34
Lowest gear	29.0 in	25.1 in	27.3 in
Highest gear	131.8 in	110.2 in	126.6 in
Cockpit
Shifting	Electronic	Electronic	Mechanical
Other specifications
Tire clearance	Maximum tire width: 45c	Not informed	Not informed
Tire width	30c	40c	40c
Wheel material	Carbon	Aluminum	Aluminum