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 F-Si Carbon 4Size M · 34T · 11–50T · 12-speed
Lowest0.68:1Highest3.09:1Total range455%
Estimated speed at 90 RPMLowest gear5.3 mphHighest gear24.0 mph

Rear tire: 29×2.25.

2020 Cannondale F-Si Carbon 4Size MD (29“) · 34T · 11–50T · 12-speed
Lowest0.68:1Highest3.09:1Total range455%

Speed unavailable: wheel or tire size is missing or unclear.

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 F-Si Carbon 4
2020 Cannondale F-Si Carbon 4
Overview
Model Year
2021
2020
Brand
Cannondale
Cannondale
Model
F-Si Carbon 4
F-Si Carbon 4
Bicycle Type
Mountain
Mountain
Colors
Alpine (ALP), Silver (SLV)
Graphite (GRA), Crush (CRU)
Sizes
S, M, L, XL
S, M, L, XL
Weight
—
—
Frameset
Frame Construction
BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
Frame Material
Carbon
Carbon
Fork
Lefty Ocho, 100mm, Chamber Damper with remote lockout, OppO Spring System, tapered steerer, 55mm offset
Lefty Ocho, 29”, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 55mm offset
Drivetrain
Shifters
SRAM NX Eagle, 12-speed
SRAM NX Eagle, 12-speed
Rear Derailleur
SRAM NX Eagle
SRAM NX Eagle
Crankset
SRAM X1-1000 Eagle DUB, 34T, Ai offset
Truvativ Stylo 6K DUB, 34T, Ai offset
Bottom Bracket
SRAM DUB PF30 MTB83
SRAM DUB PF30 MTB83
Rear Cogs
SRAM SX Eagle, 11-50, 12-speed
SRAM PG-1230, NX Eagle, 11-50, 12-speed
Chain
SRAM SX Eagle, 12-speed
SRAM NX Eagle, 12-speed
Pedals
Not included
Not Included
Brakes
Brakes
Shimano MT500 hydraulic disc, 160/160mm RT54 rotors
Shimano MT500 hydro disc, 160/160mm RT66 rotors
Cockpit & Contact Points
Headset
Integrated, 1-1/8 to 1.5”, sealed angular contact bearings (Integrated steer stop size small and extra small only)
Integrated, 1-1/8 to 1.5”, sealed angular contact bearings (Integrated steer stop size small only)
Handlebar
Cannondale 2 Flat, butted 2014 Alloy, 31.8mm, 3° rise, 8° sweep, 760mm
Cannondale 3 Flat, 6061 double-butted Alloy, 31.8mm, 3° rise, 8° sweep, 760mm
Stem
Cannondale 3, 6061 Alloy, 31.8, 7°
Cannondale 3, 6061 Alloy, 31.8, 7°
Saddle
Fabric Scoop Shallow Sport, steel rails
Fabric Scoop Flat Elite, cro-mo rails
Seatpost
Cannondale C3, 6061 Alloy, 27.2 x 350mm (S), 400mm (M-XL)
Cannondale 3, 7075 Alloy, 27.2 x 400mm
Wheels & Tires
Hubs
(F) Lefty 60 / (R) Shimano MT400 12x148mm thru-axle
(F) Lefty 60 (R) Formula 12x148 w/ HG driver
Rims
WTB STX i23 TCS, 32h, tubeless ready
WTB STX i21 TCS, 28h, tubeless ready
Spokes
DT Swiss Competition
DT Swiss Champion
Front Tire
Schwalbe Racing Ray Performance, 29 x 2.25”, Addix Compound, tubeless ready,
Schwalbe Racing Ray Performance 27.5/29 x 2.25”, Addix Compound, tubeless ready
Rear Tire
Schwalbe Racing Ralph Performance, 29 x 2.25”, Addix Compound, tubeless ready
Schwalbe Racing Ralph Performance 27.5/29 x 2.25” rear, Addix compound, tubeless ready
Wheel Size
29
29"
Geometry · choose a size for each bicycle
Geometry size
Reach
420 mm
420 mm
Stack
612 mm
612 mm
Effective top tube
606 mm
606 mm
Head-tube angle
69°
69°
Seat-tube angle
73.1°
73.1°
Seat tube
430 mm
430 mm
Head tube
101 mm
101 mm
Chainstay / rear center
427 mm
427 mm
Wheelbase
1110 mm
1110 mm
Bottom-bracket drop
62 mm
62 mm
Bottom-bracket height
308 mm
308 mm
Standover height
793 mm
793 mm
Fork offset / rake
55 mm
55 mm
Front center
691 mm
691 mm
Trail
82 mm
82 mm
Wheel size
29
—

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

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