Velopedia Bicycle Archive
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Compare published geometry, gearing and specifications for up to three bicycles.
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1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Frame geometry
2019 Cannondale F-Si Carbon 1 has 6 mm more reach than 2018 Cannondale F-Si Carbon 1 in the selected sizes.
More reach puts the head-tube reference farther forward, not necessarily the hands.
- Handling
2019 Cannondale F-Si Carbon 1 has a 0.7° slacker head-tube angle than 2018 Cannondale F-Si Carbon 1 in the selected sizes.
Fork offset, tire size and wheelbase also affect steering; head angle alone is not a handling verdict.
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.
Lowest0.68:1Highest3.40:1Total range500%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 29×2.25.
Lowest0.68:1Highest3.40:1Total range500%
Estimated speed at 90 RPMLowest gearHighest gear
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.
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
2019 Cannondale F-Si Carbon 1
2018 Cannondale F-Si Carbon 1
Overview
Model Year
2019
2018
Brand
Cannondale
Cannondale
Model
F-Si Carbon 1
F-Si Carbon 1
Bicycle Type
Mountain
Mountain
Colors
Black Pearl w/ Graphite and Chrome - Gloss (BLK)
Jet Black w/ Volt – Satin (BBQ)
Sizes
S, M, L, XL
S (27.5"), M (29"), L (29"), XL (29")
Weight
—
—
Frameset
Frame Construction
ALL-NEW F-Si, Hi-MOD BallisTec Carbon, SAVE, PF30A, tapered head tube, Speed Release 12mm thru axle, Ai Offset
F-Si, BallisTec Hi-MOD Carbon, SPEED SAVE, PF30A, 1.5 Si Head Tube, Ai Offset, 27.5” (S), 29” (M-XL)
Frame Material
Carbon
Carbon
Fork
ALL-NEW Lefty Ocho Carbon, 29”, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 55mm offset
Lefty 2.0 Carbon, 2Spring, 100mm, XLR Isolated Damper Technology with XC+ tune and XLoc remote, 55mm offset (29), 50mm offset (27.5)
Fork Material
Carbon
Carbon
Drivetrain
Shifters
SRAM X01 Eagle, 12-speed
SRAM X01 Eagle, 12-speed
Rear Derailleur
SRAM XX1 Eagle
SRAM XX1 Eagle, Type 3 RBC, 12-speed
Crankset
Truvativ Stylo Carbon, 34T, Ai Custom
Truvativ Stylo Carbon Eagle, BB30, 34T, Ai Custom
Bottom Bracket
Cannondale Alloy PressFit30
Cannondale Alloy PressFit30
Rear Cogs
SRAM XG-1295, X01 Eagle, 10-50, 12-speed
SRAM XG-1295 Eagle, 10-50, 12-speed
Chain
SRAM GX Eagle, 12-speed
SRAM Eagle 12 speed
Pedals
Not Included
—
Brakes
Brakes
SRAM Level TLM hydro disc, 160/160mm Centerline rotors
SRAM Level TLM, Centerline Rotors, 180/160mm
Cockpit & Contact Points
Headset
Integrated, 1-1/8 to 1.5”, sealed angular contact bearings (Integrated steer stop size small only)
Cannondale HeadShok Si
Handlebar
Cannondale C1 Flat, Carbon, 8° sweep, 760mm
Cannondale C1 flat, Carbon, 760mm
Stem
Cannondale C1, 7075 Alloy, 1-1/8”, 31.8, 7°
Cannondale C1, 7075 Alloy, 31.8, -5°
Saddle
Fabric Scoop Flat Race, ti rails
Fabric Scoop Flat Race w/ Titanium Rails
Seatpost
Cannondale C1 Full Carbon, 27.2 x 350/400mm
Cannondale SAVE Full Carbon, 20mm Offset, 27.2x400mm
Wheels & Tires
Hubs
Lefty 60 front, HollowGram 12x148 rear w/ DT Swiss internals
Lefty 60 front, C36 by DT-Swiss Rear, Star Ratchet, 135x9mm, 28 hole (Ai Offset dish - Rear), QR
Rims
HollowGram 23, Superlight Hi-Impact Carbon, tubeless ready, 28h, 23mm inner width
HollowGram 23, Superlight Hi-Impact Carbon, Tubeless Ready, 28hole, 23mm inner
Spokes
HollowGram, double-butted straight pull (Ai Offset dish - rear)
DT-Swiss Aerolite (Ai Offset dish - Rear)
Front Tire
Schwalbe Racing Ray 29 x 2.25” front, Racing Ralph 2.25” rear, Snake Skin Addix Speedgrip Compound, tubeless ready
Schwalbe Rocket Ron EVO Snakeskin, 29x2.25”, folding, Tubeless Ready
Rear Tire
Schwalbe Racing Ray 29 x 2.25” front, Racing Ralph 2.25” rear, Snake Skin Addix Speedgrip Compound, tubeless ready
Schwalbe Rocket Ron EVO Snakeskin, 29x2.25”, folding, Tubeless Ready
Wheel Size
29"
29"
Geometry · choose a size for each bicycle
Geometry size
Reach
420 mm
414 mm
Stack
612 mm
603 mm
Effective top tube
606 mm
596 mm
Head-tube angle
69°
69.7°
Seat-tube angle
73.1°
73.2°
Seat tube
430 mm
435 mm
Head tube
101 mm
97 mm
Chainstay / rear center
427 mm
429 mm
Wheelbase
1110 mm
1097 mm
Bottom-bracket drop
62 mm
62 mm
Bottom-bracket height
308 mm
308 mm
Standover height
793 mm
777 mm
Fork offset / rake
55 mm
55 mm
Front center
691 mm
676 mm
Trail
82 mm
78 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.