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2021 Cannondale F-Si Carbon 2

Original specifications: 29 wheels · geometry for 4 published sizes.

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At a glance

Archive #900004712
Model year
2021
Category
Mountain
Sizes
S, M, L, XL
Colors
Mercury (MRC)
Geometry
4 manufacturer sizes
In this record
21 specifications · archived image · geometry
Model history 3 other years

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Identification clues

2021 archived details

Published colors
Mercury (MRC)
Frame
Carbon

Clues, not proof of model year. Colors vary and components may have been replaced.

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Original buildCarbon · 29

Manufacturer catalog

Published sizes and colors

4 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMLXL

Published colors

Mercury (MRC)

Frameset

Frame ConstructionBallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
Frame MaterialCarbon
ForkLefty Ocho Carbon, 100mm, Chamber Damper with remote lockout, OppO Spring System, tapered steerer, 55mm offset (29”), 50mm offset (27.5)

Drivetrain

ShiftersShimano XT, 12-speed
Rear DerailleurShimano XTR
CranksetHollowGram, BB30a, OPI SpideRing, 34T, Ai offset
Bottom BracketCannondale Alloy PressFit30
Rear CogsShimano XT, 10-51, 12-speed
ChainShimano XT, 12-speed

Brakes

BrakesShimano XT hydraulic disc, 160/160mm XT rotors

Cockpit & Contact Points

HeadsetIntegrated, 1-1/8 to 1.5”, sealed angular contact bearings (Integrated steer stop size small only)
HandlebarCannondale 1 Flat, Carbon, 31.8mm, 9° back, 760mm
StemCannondale 2, 6061 Alloy, 31.8, 7°
SaddlePrologo Dimension NDR, Tirox rails
SeatpostCannondale 2, UD Carbon, 27.2 x 400mm

Wheels & Tires

Hubs(F) HollowGram Lefty 60 / (R) HollowGram w/ DT Swiss Star Ratchet internals, 12x148mm
RimsHollowGram 25, Superlight Hi-Impact Carbon, 28h, 25mm IW, tubeless ready
SpokesHollowGram, 2.0/1.8/2.0, straight-pull
Front TireSchwalbe Racing Ray EVO, 29 x 2.25”, SnakeSkin, Addix Speedgrip, tubeless ready,
Rear TireSchwalbe Racing Ralph EVO, 29 x 2.25”, SnakeSkin, Addix Speed, tubeless ready
Wheel Size29

Geometry

4 sizes · 16 measurements

Frame measurements by size.

All geometry measurements4 sizes · 16 measurements
MeasurementSMLXL
Seat tube380 mm430 mm480 mm530 mm
Effective top tube583 mm606 mm629 mm653 mm
Head tube90 mm101 mm113 mm126 mm
Head-tube angle69°69°69°69°
Seat-tube angle73.1°73.1°73.1°73.1°
Chainstay / rear center427 mm427 mm427 mm427 mm
Wheelbase1086 mm1110 mm1134 mm1159 mm
Bottom-bracket drop62 mm62 mm62 mm62 mm
Bottom-bracket height308 mm308 mm308 mm308 mm
Reach400 mm420 mm440 mm460 mm
Stack602 mm612 mm623 mm635 mm
Standover height755 mm793 mm828 mm863 mm
Fork offset / rake55 mm55 mm55 mm55 mm
Front center667 mm691 mm714 mm739 mm
Trail82 mm82 mm82 mm82 mm
Wheel size29292929

Dimensions as recorded.

Gearing

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

RPM

RPM = pedal turns per minute.

All published sizes34T · 10–51T · 12-speed
Lowest0.67:1 Highest3.40:1 Total range510%
Estimated speed At 90 RPM Lowest gear5.2 mph Highest gear26.4 mph

Rear tire: 29×2.25.

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

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Your gearing setup
Gears

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Gear, dimension and cadence changes update results automatically.

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
Shimano XT

12-speed

Retailer offers
Cassette / rear cogs · Original
Shimano XT

10-51, 12-speed

Retailer offers
Front tire · Original
Schwalbe Racing Ray EVO

29 x 2.25”, SnakeSkin, Addix Speedgrip, tubeless ready,

Retailer offers
More parts (5)Fewer parts
Rear tire · Original
Schwalbe Racing Ralph EVO

29 x 2.25”, SnakeSkin, Addix Speed, tubeless ready

Rear derailleur · Original
Shimano XTR Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Retailer offers
Seatpost · Original
Cannondale 2

UD Carbon, 27.2 x 400mm

Retailer offers
Saddle · Original
Prologo Dimension NDR

Tirox rails

Shifters · Original
Shimano XT

12-speed

Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.

Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Parts and service referenceQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Front tire
Schwalbe Racing Ray EVO, 29 x 2.25”, SnakeSkin, Addix Speedgrip, tubeless ready,
Rear tire
Schwalbe Racing Ralph EVO, 29 x 2.25”, SnakeSkin, Addix Speed, tubeless ready
Drivetrain
12-speed
Seatpost diameter
27.2 mm
Bottom bracket / shell
Cannondale Alloy PressFit30
Equipment inspection checks 12 checks based on 6 archived component groups Open equipment checksClose equipment checks
0 of 12 checked Progress stays in this browser for this record.

Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.

Full used-bike inspection guide →

Archived: Frame: BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset · Fork: Lefty Ocho Carbon, 100mm, Chamber Damper with remote lockout, OppO Spring System, tapered steerer, 55mm offset (29”), 50mm offset (27.5)

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

Archived: Shifters: Shimano XT, 12-speed · Rear derailleur: Shimano XTR · Crankset: HollowGram, BB30a, OPI SpideRing, 34T, Ai offset · Bottom bracket: Cannondale Alloy PressFit30 · Rear cogs: Shimano XT, 10-51, 12-speed · Chain: Shimano XT, 12-speed

Archived: Brakes: Shimano XT hydraulic disc, 160/160mm XT rotors

Archived: Wheel size: 29 · Rims: HollowGram 25, Superlight Hi-Impact Carbon, 28h, 25mm IW, tubeless ready · Hubs: (F) HollowGram Lefty 60 / (R) HollowGram w/ DT Swiss Star Ratchet internals, 12x148mm · Front tire: Schwalbe Racing Ray EVO, 29 x 2.25”, SnakeSkin, Addix Speedgrip, tubeless ready, · Rear tire: Schwalbe Racing Ralph EVO, 29 x 2.25”, SnakeSkin, Addix Speed, tubeless ready

Controls and contact points

Archived: 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 · Stem: Cannondale 2, 6061 Alloy, 31.8, 7° · Seatpost: Cannondale 2, UD Carbon, 27.2 x 400mm · Saddle: Prologo Dimension NDR, Tirox rails

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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