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 2Size M · 34T · 10–51T · 12-speed
Lowest0.67:1Highest3.40:1Total range510%
Estimated speed at 90 RPMLowest gear5.2 mphHighest gear26.4 mph

Rear tire: 29×2.25.

2019 Cannondale F-Si Carbon 2Size M (29“) · 34T · 10–50T · 12-speed
Lowest0.68:1Highest3.40:1Total range500%

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 2
2019 Cannondale F-Si Carbon 2
Overview
Model Year
2021
2019
Brand
Cannondale
Cannondale
Model
F-Si Carbon 2
F-Si Carbon 2
Bicycle Type
Mountain
Mountain
Colors
Mercury (MRC)
Black Pearl w/ Acid Red, Tangerine and Volt - Gloss (BPL)
Sizes
S, M, L, XL
XS, S, M, L, XL
Weight
—
—
Frameset
Frame Construction
BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
ALL-NEW F-Si, BallisTec Carbon, SAVE, PF30A, tapered head tube, Speed Release 12mm thru axle, Ai Offset
Frame Material
Carbon
Carbon
Fork
Lefty Ocho Carbon, 100mm, Chamber Damper with remote lockout, OppO Spring System, tapered steerer, 55mm offset (29”), 50mm offset (27.5)
ALL-NEW Lefty Ocho, 27.5/29”, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 50/55mm offset
Drivetrain
Shifters
Shimano XT, 12-speed
SRAM X01 Eagle, 12-speed
Rear Derailleur
Shimano XTR
SRAM X01 Eagle
Crankset
HollowGram, BB30a, OPI SpideRing, 34T, Ai offset
Truvativ Stylo Carbon, 34T, Ai Custom
Bottom Bracket
Cannondale Alloy PressFit30
Cannondale Alloy PressFit30
Rear Cogs
Shimano XT, 10-51, 12-speed
SRAM XG-1275, GX Eagle, 10-50, 12-speed
Chain
Shimano XT, 12-speed
SRAM GX Eagle, 12-speed
Pedals
—
Not Included
Brakes
Brakes
Shimano XT hydraulic disc, 160/160mm XT rotors
Shimano Deore XT hydro disc, 160/160mm XT rotors
Cockpit & Contact Points
Headset
Integrated, 1-1/8 to 1.5”, sealed angular contact bearings (Integrated steer stop size small only)
Integrated, 1-1/8 to 1.5”, sealed angular contact bearings (Integrated steer stop size small and extra small only)
Handlebar
Cannondale 1 Flat, Carbon, 31.8mm, 9° back, 760mm
Cannondale C1 Flat, Carbon, 8° sweep, 760mm
Stem
Cannondale 2, 6061 Alloy, 31.8, 7°
Cannondale C1, 7075 Alloy, 1-1/8”, 31.8, 7°
Saddle
Prologo Dimension NDR, Tirox rails
Fabric Scoop Flat Race, ti rails
Seatpost
Cannondale 2, UD Carbon, 27.2 x 400mm
Cannondale C1 Full Carbon, 27.2 x 350/400mm
Wheels & Tires
Hubs
(F) HollowGram Lefty 60 / (R) HollowGram w/ DT Swiss Star Ratchet internals, 12x148mm
Lefty 60 front, HollowGram 12x148 rear w/ DT Swiss internals
Rims
HollowGram 25, Superlight Hi-Impact Carbon, 28h, 25mm IW, tubeless ready
HollowGram 23, Superlight Hi-Impact Carbon, tubeless ready, 28h, 23mm inner width
Spokes
HollowGram, 2.0/1.8/2.0, straight-pull
HollowGram, double-butted straight pull (Ai Offset dish - rear)
Front Tire
Schwalbe Racing Ray EVO, 29 x 2.25”, SnakeSkin, Addix Speedgrip, tubeless ready,
Schwalbe Racing Ray 27.5/29 x 2.25” front, Racing Ralph 2.25” rear, Snake Skin, Addix Speedgrip Compound, tubeless ready
Rear Tire
Schwalbe Racing Ralph EVO, 29 x 2.25”, SnakeSkin, Addix Speed, tubeless ready
Schwalbe Racing Ray 27.5/29 x 2.25” front, Racing Ralph 2.25” rear, Snake Skin, Addix Speedgrip 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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