Velopedia Bicycle Archive

Compare Bicycles

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

Mountain · Non-electric

2021 Cannondale F-Si Carbon 2

Selected size
Original MSRP: Not documented

View record

Mountain · Non-electric

2020 Cannondale F-Si Carbon 2

Selected size
Original MSRP: Not documented

View record

1 of 2 bicycles

At a glance

Key differences

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

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.

Preparing published geometry…

Gearing comparison

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

Pedal cadence

RPM

Speed units

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.

2020 Cannondale F-Si Carbon 2Size MD (29“) · 34T · 10–51T · 12-speed

Lowest0.67:1Highest3.40:1Total range510%

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.

Specification

2021 Cannondale F-Si Carbon 2

2020 Cannondale F-Si Carbon 2

Overview

Model Year

2021

2020

Brand

Cannondale

Model

F-Si Carbon 2

Bicycle Type

Mountain

Colors

Mercury (MRC)

Chameleon (CML)

Sizes

S, M, L, XL

Weight

—

Frameset

Frame Construction

BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset

Frame Material

Carbon

Fork

Lefty Ocho Carbon, 100mm, Chamber Damper with remote lockout, OppO Spring System, tapered steerer, 55mm offset (29”), 50mm offset (27.5)

Lefty Ocho Carbon, 27.5/29”, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 50/55mm offset

Fork Material

—

Carbon

Drivetrain

Shifters

Shimano XT, 12-speed

Rear Derailleur

Shimano XTR

Shimano XTR, Shadow Plus

Crankset

HollowGram, BB30a, OPI SpideRing, 34T, Ai offset

HollowGram, BB30 w/X-Sync® SpideRing, 34T, Ai offset

Bottom Bracket

Cannondale Alloy PressFit30

Rear Cogs

Shimano XT, 10-51, 12-speed

Chain

Shimano XT, 12-speed

Pedals

—

Not Included

Brakes

Shimano XT hydraulic disc, 160/160mm XT rotors

Shimano Deore XT Race 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)

Handlebar

Cannondale 1 Flat, Carbon, 31.8mm, 9° back, 760mm

Cannondale 1 Flat, Carbon, 31.8mm, 9° backsweep, 760mm

Stem

Cannondale 2, 6061 Alloy, 31.8, 7°

Cannondale 1, 7075 Alloy, 1-1/8”, 31.8, 7°

Saddle

Prologo Dimension NDR, Tirox rails

Fabric Scoop Flat Race, titanium rails

Seatpost

Cannondale 2, UD Carbon, 27.2 x 400mm

Cannondale 2, 7075 Alloy, 31.6 x 400mm

Wheels & Tires

Hubs

(F) HollowGram Lefty 60 / (R) HollowGram w/ DT Swiss Star Ratchet internals, 12x148mm

(F) Lefty 60 (R) Hollowgram w/ DT internals 12x148 w/ Micro Spline

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

Formula Grand Forza

Front Tire

Schwalbe Racing Ray EVO, 29 x 2.25”, SnakeSkin, Addix Speedgrip, tubeless ready,

Schwalbe Racing Ray 27.5/29 x 2.25”, Snake Skin, Addix Speedgrip Compound, tubeless ready

Rear Tire

Schwalbe Racing Ralph EVO, 29 x 2.25”, SnakeSkin, Addix Speed, tubeless ready

Schwalbe Racing Ralph 27.5/29 x 2.25”, Snake Skin, Addix Speed Compound, tubeless ready

Wheel Size

29"

Geometry · choose a size for each bicycle

Geometry size

Reach

420 mm

Stack

612 mm

Effective top tube

606 mm

Head-tube angle

69°

Seat-tube angle

73.1°

Seat tube

430 mm

Head tube

101 mm

Chainstay / rear center

427 mm

Wheelbase

1110 mm

Bottom-bracket drop

62 mm

Bottom-bracket height

308 mm

Standover height

793 mm

Fork offset / rake

55 mm

Front center

691 mm

Trail

82 mm

Wheel size

—

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

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