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.
- Gearing
2018 Cannondale Scalpel-Si Carbon 4 has a 9% lower climbing ratio than 2019 Cannondale Scalpel-Si Carbon 4.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
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%
Speed unavailable: wheel or tire size is missing or unclear.
Lowest0.62:1Highest3.27:1Total range529%
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 Scalpel-Si Carbon 4
2018 Cannondale Scalpel-Si Carbon 4
Overview
Model Year
2019
2018
Brand
Cannondale
Cannondale
Model
Scalpel-Si Carbon 4
Scalpel-Si Carbon 4
Bicycle Type
Mountain
Mountain
Colors
Black Pearl w/ Graphite and Charcoal - Gloss (BPL), Acid Green w/ Graphite and Vulcan - Gloss (AGR)
Acid Green w/ Anthracite and Jet Black - Gloss (AGR)
Sizes
S, M, L, XL
S (27.5"), M (29"), L (29"), XL (29")
Weight
—
—
Frameset
Frame Construction
Scalpel-Si, 100mm, BallisTec Carbon, Zero Pivot seatstay, Carbon Link, PF30, 1.5 Si head tube, Ai Offset
Scalpel-Si, 100mm, BallisTec Carbon, Zero Pivot seatstay, Carbon Link, PF30, 1.5 Si head tube, Ai Offset
Frame Material
Carbon
Carbon
Fork
ALL-NEW Lefty Ocho, 27.5/29”, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 50/55mm offset
Lefty 2.0 Alloy OPI, 2Spring, 100mm, XLR Isolated Damper Technology with XC+ tune and XLoc remote, 55mm offset (29), 50mm offset (27.5)
Fork Material
—
Aluminum
Rear Shock
RockShox Monarch RL, 100mm
RockShox Monarch RL, 100mm
Drivetrain
Shifters
SRAM NX Eagle, 12-speed
Shimano XT, 2x11
Front Derailleur
—
Shimano XT, side swing
Rear Derailleur
SRAM GX Eagle
Shimano XT Shadow Plus, 11-speed
Crankset
Truvativ Stylo 6K, 34T, Ai Custom
Cannondale Si, BB30, 36/26 CNC Rings
Bottom Bracket
Cannondale Alloy PressFit30
Cannondale Alloy PressFit30
Rear Cogs
SRAM PG-1230, NX Eagle, 10-50, 12-speed
Shimano XT, 11-42, 11-speed
Chain
SRAM NX Eagle, 12-speed
Shimano HG601, 11-speed
Pedals
Not Included
—
Brakes
Brakes
SRAM Level TL hydro disc, 180/160mm Centerline rotors
Shimano XT hydro disc, 160/160mm
Cockpit & Contact Points
Headset
Cannondale HeadShok Si
Cannondale HeadShok Si
Handlebar
Cannondale C2 Flat, butted 2014 Alloy, 8° sweep, 760mm
Cannondale C2 flat, Butted AL2014 Alloy, 760mm
Stem
Cannondale C3, 3D Forged 6061 Alloy, 1-1/8”, 31.8, 7°
Cannondale C1, 6061 Alloy, 1.5”, 31.8, -5°
Saddle
Fabric Scoop Flat Elite, cro-mo rails
Prologo Zero II STN
Seatpost
Cannondale C2, 7075 Alloy, 31.6 x 400mm
Cannondale C3, Micro Adjust, 6061 Alloy, 31.6x350mm (XS,S,M) 400mm (L,X)
Wheels & Tires
Hubs
Lefty 60 front, Formula 12x142 rear w/ HG driver
Lefty 60 front, Formula DHT-142x12, (Ai Offset dish - Rear)
Rims
Stan’s NoTubes Crest S1, 28h, tubeless ready
Stan’s NoTubes Crest S1, 32 hole, tubeless ready
Spokes
DT Swiss Competition (Ai Offset dish - rear)
DT Swiss Competition (Ai Offset dish - Rear)
Front Tire
Schwalbe Racing Ray Performance 27.5/29 x 2.25” front, Racing Ralph Performance 2.25” rear, Addix compound, tubeless ready
Schwalbe Racing Ralph Performance, 29x2.25”, folding
Rear Tire
Schwalbe Racing Ray Performance 27.5/29 x 2.25” front, Racing Ralph Performance 2.25” rear, Addix compound, tubeless ready
Schwalbe Racing Ralph Performance, 29x2.25”, folding
Wheel Size
29"
29"
Geometry · choose a size for each bicycle
Geometry size
Reach
424 mm
424 mm
Stack
592 mm
592 mm
Effective top tube
599 mm
599 mm
Head-tube angle
69.5°
69.5°
Seat-tube angle
73.5°
73.5°
Seat tube
440 mm
440 mm
Head tube
110 mm
110 mm
Chainstay / rear center
435 mm
435 mm
Wheelbase
1118 mm
1118 mm
Bottom-bracket drop
38 mm
38 mm
Bottom-bracket height
334 mm
334 mm
Standover height
754 mm
754 mm
Fork offset / rake
55 mm
55 mm
Front center
685 mm
685 mm
Trail
77 mm
77 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.