Cannondale Synapse 1

Name: Cannondale Synapse 1
Brand: Cannondale

2025 RoadEndurance Manufacturer page

Last known price: $2,099

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

Rider height by size (cm)

Size guide

44cm 154.9–165.1
48cm 157.5–167.6
51cm 165.1–175.3
54cm 170.2–180.3
56cm 177.8–185.4
58cm 182.9–193
61cm 190.5–203.2

Components

17 of 23 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

Lightweight SmartForm C2 Alloy, SmartSense compatible, BSA threaded BB, internal cable routing, flat mount, 142x12 thru-axle, hidden rack/fender mounts Not identified

Suspension

1 part

Fork

Synapse Carbon, integrated crown race, 12x100mm thru-axle, internal routing, flat mount brake, fender mounts Not identified

Drivetrain

7 parts

Bottom bracket
- Shimano BB-RS500
BB-RS500
Cassette
- Shimano 105
Chain
- Shimano 105
Crankset
- Shimano FC-RS520 12 speeds 50/34t
FC-RS520
Front derailleur
- Shimano 105 FD-R7100 2 speeds
FD-R7100
Rear derailleur
- Shimano 105 RD-R7100 12 speeds
RD-R7100
Shifters
- Shimano 105

Brakes

2 parts

Wheels and tires

5 parts

Front hub
- Formula CL-712
CL-712
Rear hub
- Formula
RXC-400
Rims
- DT Swiss
Spokes

Stainless Steel, 14g Not identified
Tires

Zaffiro Pro Bright Black Reflective, 700x30c Not identified

Cockpit and contact points

7 parts

Grips
- Cannondale
Handlebar
- Cannondale
Headset

Integrated, 1-1/8" - 1-1/4" Not identified
Pedals

Not included Not identified
Saddle
- Fizik Aliante
Seatpost
- Cannondale
Stem
- Cannondale

Sizes and geometry

7 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 54cm

Table

Reach 381mm

Stack 570mm

Wheelbase 1010mm

Head angle 71.9°

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 7 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	365	371	376	381	387	393	402
Stackmm	510	530	550	570	590	610	640
Top tube lengthmm	521	533	544	555	567	580	598
Seat tube lengthmm	400	422	443	480	520	550	590
Head tube lengthmm	96	115	140	160	181	205	236
Head tube angle	70.2°	70.8°	71°	71.9°	72°	72°	72°
Seat tube angle	73°	73°	73°	73°	73°	73°	73°
Chainstay lengthmm	415	415	415	415	415	415	415
Wheelbasemm	985	993	1006	1010	1021	1035	1054
Front centermm	584	591	602	606	617	630	649
Bottom bracket dropmm	80	80	75	73	73	70	70
Bottom bracket heightmm	263	263	268	270	270	273	273
Standover heightmm	681	702	723	753	784	810	845
Fork rakemm	55	55	55	55	55	55	55
Trailmm	65	61	60	54	54	54	54

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: Aluminum
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: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire clearance: Maximum tire width: 32c
Tire width: 30c
Wheel material: Aluminum
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

Mechanical

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 1	Cannondale Synapse 2	Cannondale Synapse 3	Cannondale Synapse Carbon 1	Cannondale Synapse Carbon 1 RLE	Cannondale Synapse Carbon 2
Frame
Frame material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Carbon
Drivetrain
Smallest chainring	34	32	34	34	34	34
Largest chainring	50	46	50	50	50	50
Rear sprockets	12	10	9	12	12	12
Largest sprocket	34	39	34	34	34	34
Lowest gear	29.0 in	23.8 in	29.0 in	29.0 in	29.0 in	29.0 in
Highest gear	131.8 in	121.3 in	131.8 in	131.8 in	131.8 in	131.8 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Electronic	Electronic	Electronic
Derailleur hanger	Not informed	Not informed	Not informed	UDH	Not informed	UDH
Other specifications
Tire clearance	Maximum tire width: 32c	Maximum tire width: 32c	Maximum tire width: 32c	Maximum tire width: 48c	Maximum tire width: 35c	Maximum tire width: 48c
Tire width	30c	30c	30c	32c	30c	32c
Wheel material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Carbon
Power meter	Not informed	Not informed	Not informed	Shimano Ultegra R8100, 50/34, 4iiii PRECISION 3+ PRO Power Meter: 165mm (44cm), 170mm (48-51cm), 172.5 (54-56cm), 175mm (58-61)Additional specification: Model display: Precision ProAdditional specification: Model id: precision-pro	Not informed	Not informed