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2018 Cannondale F-Si Carbon 3

Original specifications: 27.5" wheels · geometry for 4 published sizes.

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At a glance

Model year
2018
Category
Mountain
Sizes
S (27.5"), M (29"), L (29"), XL (29")
Colors
Nearly Black w/ Jet Black and Acid Red - Gloss (NBL)
Geometry
4 manufacturer sizes
In this record
23 specifications · archived image · geometry
Archive ID
900002665
Original buildCarbon · 27.5"

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

S (27.5")M (29")L (29")XL (29")

Published colors

Nearly Black w/ Jet Black and Acid Red - Gloss (NBL)

Frameset

Frame ConstructionF-Si, BallisTec Carbon, SPEED SAVE, PF30A, 1.5 Si Head Tube, Ai Offset, 27.5” (S), 29” (M-XL)
Frame MaterialCarbon
ForkLefty 2.0 Alloy OPI, 2Spring, 100mm, PBR Isolated Damper Technology with XC+ tune, 55mm offset (29), 50mm offset (27.5)
Fork MaterialAluminum

Drivetrain

ShiftersShimano XT, 2x11
Front DerailleurShimano XT, direct mount
Rear DerailleurShimano XT, Shadow Plus, 11-speed
CranksetCannondale Si, Ai, BB30, FSA 26/36 rings
Bottom BracketCannondale Alloy PressFit30
Rear CogsShimano SLX , 11-42, 11-speed
ChainShimano CN-HG601, 11-speed

Brakes

BrakesMagura MT-RACE w/ Storm SL Rotors, 180/160mm

Cockpit & Contact Points

HeadsetCannondale HeadShok Si
HandlebarCannondale C2 flat, Butted AL2014 Alloy, 700mm
StemCannondale C1, 6061 Alloy, 1.5”, 31.8, -5°
SaddlePrologo Zero II STN Rail
SeatpostCannondale C2, 7075 alloy, 27.2mm x 400mm

Wheels & Tires

HubsLefty 60 front, Custom Formula 1702 Ai Offset dish - Rear
RimsStan’s NoTubes Crest MK3, Tubeless Ready
SpokesDT-Swiss Competition (Ai Offset dish - Rear)
Front TireSchwalbe Racing Ralph EVO Performance, 29/27.5x2.1”, Tubeless Ready
Rear TireSchwalbe Racing Ralph EVO Performance, 29/27.5x2.1”, Tubeless Ready
Wheel Size27.5"

Geometry

4 sizes · 16 measurements

Frame measurements by size.

All geometry measurements4 sizes · 16 measurements
MeasurementS (27.5")M (29")L (29")XL (29")
Seat tube385 mm435 mm485 mm535 mm
Effective top tube570 mm596 mm622 mm649 mm
Top tube544 mm565 mm590 mm617 mm
Head tube97 mm97 mm110 mm122 mm
Head-tube angle69°69.7°69.8°69.9°
Seat-tube angle73.3°73.2°73.1°73°
Chainstay / rear center425 mm429 mm429 mm429 mm
Wheelbase1072 mm1097 mm1122 mm1147 mm
Bottom-bracket drop45 mm62 mm62 mm62 mm
Bottom-bracket height308 mm308 mm308 mm308 mm
Reach399 mm414 mm435 mm457 mm
Stack569 mm603 mm615 mm628 mm
Standover height737 mm777 mm806 mm837 mm
Fork offset / rake50 mm55 mm55 mm55 mm
Front center656 mm676 mm700 mm725 mm
Trail82 mm78 mm78 mm77 mm

Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.

Gearing

Chainring ÷ rear sprocket

Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.

All published sizes36/26T · 11–42T · 11-speed
Lowest0.62:1 Highest3.27:1 Total range529%
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Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
Shimano CN-HG601, 11-speed
Retailer offers · Affiliate links
Cassette / rear cogs · Original
Shimano SLX , 11-42, 11-speed Search: Shimano SLX , 11-42, 11-speed cassette
Saddle · Original
Prologo Zero II STN Rail
More parts (6)
Crankset · Original
Cannondale Si, Ai, BB30, FSA 26/36 rings
Front derailleur · Original
Shimano XT, direct mount Search: Shimano Deore XT 11-speed front derailleur Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Rear derailleur · Original
Shimano XT, Shadow Plus, 11-speed Search: Shimano XT, Shadow Plus, 11-speed rear derailleur Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Retailer offers · Affiliate links
Shifters · Original
Shimano XT, 2x11 Search: Shimano XT, 2x11 shifter Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Seatpost · Original
Cannondale C2, 7075 alloy, 27.2mm x 400mm
Retailer offers · Affiliate links
Hubs · Original
Lefty 60 front, Custom Formula 1702 Ai Offset dish - Rear

Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.

Bike-specific inspection checklist 21 checks based on 6 archived component groups Open checklistClose checklist
0 of 21 checked Progress stays in this browser for this bike.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2018 Cannondale F-Si Carbon 3 · Mountain · Published sizes: S (27.5"), M (29"), L (29"), XL (29")

Archived: Frame: F-Si, BallisTec Carbon, SPEED SAVE, PF30A, 1.5 Si Head Tube, Ai Offset, 27.5” (S), 29” (M-XL) · Fork: Lefty 2.0 Alloy OPI, 2Spring, 100mm, PBR Isolated Damper Technology with XC+ tune, 55mm offset (29), 50mm offset (27.5) · Aluminum

Archived: Fork: Lefty 2.0 Alloy OPI, 2Spring, 100mm, PBR Isolated Damper Technology with XC+ tune, 55mm offset (29), 50mm offset (27.5)

Archived: Shifters: Shimano XT, 2x11 · Front derailleur: Shimano XT, direct mount · Rear derailleur: Shimano XT, Shadow Plus, 11-speed · Crankset: Cannondale Si, Ai, BB30, FSA 26/36 rings · Bottom bracket: Cannondale Alloy PressFit30 · Rear cogs: Shimano SLX , 11-42, 11-speed · Chain: Shimano CN-HG601, 11-speed

Archived: Brakes: Magura MT-RACE w/ Storm SL Rotors, 180/160mm

Archived: Wheel size: 27.5" · Rims: Stan’s NoTubes Crest MK3, Tubeless Ready · Hubs: Lefty 60 front, Custom Formula 1702 Ai Offset dish - Rear · Front tire: Schwalbe Racing Ralph EVO Performance, 29/27.5x2.1”, Tubeless Ready · Rear tire: Schwalbe Racing Ralph EVO Performance, 29/27.5x2.1”, Tubeless Ready

Controls and contact points

Archived: Headset: Cannondale HeadShok Si · Handlebar: Cannondale C2 flat, Butted AL2014 Alloy, 700mm · Stem: Cannondale C1, 6061 Alloy, 1.5”, 31.8, -5° · Seatpost: Cannondale C2, 7075 alloy, 27.2mm x 400mm · Saddle: Prologo Zero II STN Rail

Before and during the test ride

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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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