Velopedia Bicycle Archive
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Compare published geometry, gearing and specifications for up to three bicycles.
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1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Gearing
2020 Cannondale Synapse Carbon Disc 105 has a 6% lower climbing ratio than 2018 Cannondale Synapse Carbon Disc 105.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
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.
Lowest1.00:1Highest4.55:1Total range455%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 700C×30.
Lowest1.06:1Highest4.55:1Total range428%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 700C×28.
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.
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.
Specification
2020 Cannondale Synapse Carbon Disc 105
2018 Cannondale Synapse Carbon Disc 105
Overview
Model Year
2020
2018
Brand
Cannondale
Cannondale
Model
Synapse Carbon Disc 105
Synapse Carbon Disc 105
Bicycle Type
Road
Road
Colors
Black (BLK), Nuclear Yellow (NYW)
Midnight Blue w/ Jet Black and Volt - Gloss (MDN), Jet Black w/ Charcoal Gray and Fine Silver - Gloss (BBQ)
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, 12mm thru axle, internal cable routing, removable fender bridge
NEW Synapse Disc, BallisTec Carbon, Di2 ready, SAVE PLUS, BB30a, flat mount, 12mm thru axle
Frame Material
Carbon
Carbon
Fork
BallisTec Carbon, SAVE, integrated crown race, 12x100mm thru-axle, internal routing, size-specific design - 44-48: 1 1/8” steerer, 60mm rake 51-54: 1-1/8” - 1-1/4” tapered steerer, 55mm rake 56-61: 1-1/8” - 1-3/8” tapered steerer, 45mm rake
NEW Synapse Disc Asymmetric, SAVE PLUS, BallisTec Carbon, integrated crown race, size-specific design. 44-48: 1 1/8” steerer, 60mm rake 51-54: 1-1/8”- 1-1/4” tapered steerer, 55mm rake 56-61: 1-1/8”- 1-3/8” tapered steerer, 45mm rake
Fork Material
Carbon
Carbon
Drivetrain
Shifters
Shimano 105 hydro disc, 2x11
Shimano RS505 hydro disc
Front Derailleur
Shimano 105, braze-on
Shimano 105, braze-on
Rear Derailleur
Shimano 105 GS
Shimano 105 GS
Crankset
Cannondale 1, BB30a, FSA rings, 50/34
Cannondale Si, BB30a, w/ FSA rings, 50/34
Bottom Bracket
Cannondale Alloy PressFit30
FSA BB30 Bearings
Rear Cogs
Shimano 105, 11-34, 11-speed
Shimano 105, 11-32, 11-speed
Chain
Shimano HG601, 11-speed
Shimano HG601, 11-speed
Pedals
Not Included
—
Brakes
Brakes
Shimano 105 hydro disc, 160/160mm RT30 rotors
Shimano RS505 hydro disc, flat mount, 160/160mm
Cockpit & Contact Points
Headset
Synapse, 1-1/4” lower bearing, 25mm top cap
Synapse Si, 25mm carbon top cap
Handlebar
Cannondale 3, 6061 alloy, Compact
Cannondale C3, butted 6061 Alloy, Compact
Stem
Cannondale 3, 6061 alloy, 7-degree
Cannondale C3, 6061 Alloy, 31.8, 6 deg.
Saddle
Fabric Scoop Shallow Sport, steel rails
Selle Royal Seta S1
Seatpost
Cannondale 3, 6061 Alloy, 25.4 x 350mm (46-56), 400mm (58-61)
Cannondale C3, 6061 Alloy, 25.4x350mm (48-56), 400mm (58-61)
Wheels & Tires
Hubs
(F) Formula CL-712, 12x100mm centerlock (R) Formula RXC-400, 12x142 centerlock
Formula CX20 100x12mm front, CX 22 142x12mm rear
Rims
RD 2.0, 28h
RD 2.0 Disc, 28-hole
Spokes
Stainless steel, 14g
Stainless Steel, 14g
Front Tire
Vittoria Zaffiro Pro Bright Black, 700 x 30c
Schwalbe Lugano, Folding, 700x28c
Rear Tire
Vittoria Zaffiro Pro Bright Black, 700 x 30c
Schwalbe Lugano, Folding, 700x28c
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
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.