Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. No key difference could be established from the available data. Check the full table for the details.

Selected-size geometry

Geometry overlay

Frames share one scale and a bottom-bracket alignment. Size labels differ by brand; schematic drawing aids are identified below.

Gearing comparison

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

2021 Cannondale Synapse Carbon 105Size 54 · 50/34T · 11–34T · 11-speed
Lowest1.00:1Highest4.55:1Total range455%
Estimated speed at 90 RPMLowest gear7.2 mphHighest gear32.7 mph

Rear tire: 700C×30.

2019 Cannondale Synapse Carbon 105Size 54 · 50/34T · 11–34T · 11-speed
Lowest1.00:1Highest4.55:1Total range455%
Estimated speed at 90 RPMLowest gear7.1 mphHighest gear32.2 mph

Rear tire: 700C×25.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
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Specification
2021 Cannondale Synapse Carbon 105
2019 Cannondale Synapse Carbon 105
Overview
Model Year
2021
2019
Brand
Cannondale
Cannondale
Model
Synapse Carbon 105
Synapse Carbon 105
Bicycle Type
Road
Road
Colors
Mantis (MAT)
Jet Black w/ Acid Red - Satin (BLK)
Sizes
48, 51, 54, 56, 58, 61
48, 51, 54, 56, 58, 61
Weight
—
—
Frameset
Frame Construction
BallisTec Carbon, Di2 ready, SAVE, BB30a, flat mount, 12x142mm thru axle, internal cable routing, removable fender bridge
Synapse, BallisTec Carbon, Di2 ready, SAVE, BB30a, rim brake
Frame Material
Carbon
Carbon
Fork
BallisTec Full Carbon, integrated crown race, SAVE, size- specific design, 12x100mm thru-axle, internal routing
Synapse, SAVE, BallisTec Carbon, 1-1/8” to 1-1/4” tapered steerer
Fork Material
—
Carbon
Drivetrain
Shifters
Shimano 105, 11-speed
Shimano 105, 2x11
Front Derailleur
Shimano 105, braze-on
Shimano 105, braze-on
Rear Derailleur
Shimano 105 GS
Shimano 105 GS
Crankset
Cannondale 1, BB30a, 50/34
Cannondale Si, BB30a w/ FSA rings, 50/34
Bottom Bracket
Cannondale BB30
Cannondale BB30
Rear Cogs
Shimano 105, 11-34, 11-speed
Shimano 105, 11-34, 11-speed
Chain
Shimano HG601, 11-speed
Shimano HG601, 11-speed
Pedals
Not included
Not Included
Brakes
Brakes
Shimano 105 hydraulic disc, 160/160mm RT64 rotors
Shimano 105 7000
Cockpit & Contact Points
Headset
Synapse Carbon, integrated, 1-1/8” - 1-1/8” (48 cm), 1-1/8” - 1-1/4” (51-54 cm), 1-1/8” - 1-3/8” (56-61 cm)
Synapse Si, 25mm Alloy top cap
Handlebar
Cannondale 3, 6061 alloy, Compact
Cannondale C3, 6061 Alloy, Compact
Stem
Cannondale 3, 6061 Alloy, 31.8, 7°
Cannondale C3, 6061 Alloy, 31.8, 7°
Saddle
Fabric Scoop Shallow Sport, steel rails
Fabric Scoop Shallow Sport, steel rails
Seatpost
Cannondale 3, 6061 Alloy, 25.4 x 300mm (48- 51), 350mm (54-56), 400mm (58-61)
Cannondale C3, 6061 Alloy, 25.4 x 350mm (44-56), 400mm (58-61)
Wheels & Tires
Hubs
(F) Formula CL-712, 12x100mm centerlock (R) Formula RXC-400, 12x142mm centerlock
Fulcrum Racing Sport
Rims
Cannondale RD 2.0 Disc, double wall w/ eyelet, 28h
Fulcrum Racing Sport
Spokes
Stainless Steel, 14g
Fulcrum Racing Sport
Front Tire
Vittoria Zaffiro Pro Bright Black, 700c x 30c, reflective
Vittoria Zaffiro, 700 x 25c
Rear Tire
Vittoria Zaffiro Pro Bright Black, 700c x 30c, reflective
Vittoria Zaffiro, 700 x 25c
Wheel Size
700c
700c
Geometry · choose a size for each bicycle
Geometry size
Reach
382 mm
382 mm
Stack
570 mm
570 mm
Effective top tube
547 mm
547 mm
Head-tube angle
71.7°
71.7°
Seat-tube angle
73.9°
73.9°
Seat tube
480 mm
480 mm
Head tube
161 mm
161 mm
Chainstay / rear center
410 mm
410 mm
Wheelbase
1008 mm
1008 mm
Bottom-bracket drop
73 mm
73 mm
Bottom-bracket height
272 mm
272 mm
Standover height
773 mm
773 mm
Fork offset / rake
55 mm
55 mm
Front center
609 mm
609 mm
Trail
56 mm
56 mm
Wheel size
700c
—

Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.

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