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2019 Cannondale Scalpel-Si 5

Original specifications: 29" wheels · geometry for 5 published sizes.

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At a glance

Archive #900002758
Model year
2019
Category
Mountain
Sizes
S, M, L, XL
Colors
Jet Black w/ Volt - Gloss (VLT)
Geometry
5 manufacturer sizes
In this record
23 specifications · archived image · geometry
Model history 1 other year

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Identification clues

2019 archived details

Published colors
Jet Black w/ Volt - Gloss (VLT)
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

Jet Black w/ Volt - Gloss (VLT)

Frameset

Frame ConstructionScalpel-Si, 100mm, SmartForm C1 Alloy, Zero Pivot seatstay, Carbon Link, PF30, 1.5 Si head tube, Ai Offset
Frame MaterialCarbon
ForkALL-NEW Lefty Ocho, 27.5/29”, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 50/55mm offset
Rear ShockRockShox Monarch RL, 100mm

Drivetrain

ShiftersSRAM NX Eagle, 12-speed
Rear DerailleurSRAM NX Eagle
CranksetTruvativ Stylo 6K, 34T, Ai Custom
Bottom BracketCannondale BB30
Rear CogsSRAM PG-1230, NX Eagle, 10-50, 12-speed
ChainSRAM NX Eagle, 12-speed
PedalsNot Included

Brakes

BrakesShimano MT500 hydro disc, 180/160mm RT56 rotors

Cockpit & Contact Points

HeadsetCannondale HeadShok Si
HandlebarCannondale C3 Flat, 6061 double-butted Alloy, 8° sweep, 760mm
StemCannondale C3, 3D Forged 6061 Alloy, 1-1/8”, 31.8, 7°
SaddleFabric Scoop Shallow Sport, steel rails
SeatpostCannondale C3, 6061 Alloy, 31.6 x 400mm

Wheels & Tires

HubsLefty 60 front, Formula 12x142 rear w/ HG driver
RimsWTB STX i23 TCS, 28h, tubeless ready
SpokesDT Swiss Champion (Ai Offset dish - rear)
Front TireSchwalbe Racing Ray Performance 27.5/29 x 2.25” front, Racing Ralph Performance 2.25” rear, Addix compound, tubeless ready
Rear TireSchwalbe Racing Ray Performance 27.5/29 x 2.25” front, Racing Ralph Performance 2.25” rear, Addix compound, tubeless ready
Wheel Size29"

Geometry

5 sizes · 15 measurements

Frame measurements by size.

All geometry measurements5 sizes · 15 measurements
MeasurementXS (27.5“)S (27.5“)M (29“)L (29“)XL (29“)
Seat tube380 mm400 mm440 mm480 mm520 mm
Effective top tube548 mm570 mm599 mm624 mm648 mm
Head tube97 mm97 mm110 mm122 mm134 mm
Head-tube angle69.5°69.5°69.5°69.5°69.5°
Seat-tube angle73.5°73.5°73.5°73.5°73.5°
Chainstay / rear center425 mm425 mm435 mm435 mm435 mm
Wheelbase1057 mm1079 mm1118 mm1144 mm1169 mm
Bottom-bracket drop20 mm20 mm38 mm38 mm38 mm
Bottom-bracket height333 mm333 mm334 mm334 mm334 mm
Reach385 mm407 mm424 mm445 mm466 mm
Stack550 mm550 mm592 mm604 mm615 mm
Standover height715 mm716 mm754 mm760 mm766 mm
Fork offset / rake50 mm50 mm55 mm55 mm55 mm
Front center631 mm653 mm685 mm711 mm735 mm
Trail75 mm75 mm77 mm77 mm77 mm

Dimensions as recorded.

Gearing

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

All published sizes34T · 10–50T · 12-speed
Lowest0.68:1 Highest3.40:1 Total range500%

Speed unavailable: wheel or tire size is missing or unclear.

Add your rear tire size to calculate speed
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
SRAM NX Eagle

12-speed

Retailer offers
Seatpost · Original
Cannondale C3

6061 Alloy, 31.6 x 400mm

Retailer offers
Cassette / rear cogs · Original
SRAM PG-1230

NX Eagle, 10-50, 12-speed

More parts (5)Fewer parts
Saddle · Original
Fabric Scoop Shallow Sport

steel rails

Rear derailleur · Original
SRAM NX Eagle
Shifters · Original
SRAM NX Eagle

12-speed

Rims · Original
WTB STX i23 TCS

28h, tubeless ready

Hubs · Original
Lefty 60 front

Formula 12x142 rear w/ HG driver

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.

Service essentialsQuick reference before buying parts

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

Front tire
Schwalbe Racing Ray Performance 27.5/29 x 2.25” front, Racing Ralph Performance 2.25” rear, Addix compound, tubeless readyCheck: Verify the fitted tire’s size marking and rim type.
Rear tire
Schwalbe Racing Ray Performance 27.5/29 x 2.25” front, Racing Ralph Performance 2.25” rear, Addix compound, tubeless readyCheck: Verify the rear size; it may differ from the front.
Drivetrain
12-speedCheck: Match the installed drivetrain family, not just its speed count.
Seatpost diameter
31.6 mmCheck: Read the post’s diameter marking; seat-clamp size differs.
Bottom bracket / shell
Cannondale BB30Check: Verify shell type and width, crank interface, and spindle length or spacers.
Bike-specific inspection checklist 23 checks based on 6 archived component groups Open checklistClose checklist
0 of 23 checked Progress stays in this browser for this record.

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: 2019 Cannondale Scalpel-Si 5 · Mountain · Published sizes: S, M, L, XL

Archived: Frame: Scalpel-Si, 100mm, SmartForm C1 Alloy, Zero Pivot seatstay, Carbon Link, PF30, 1.5 Si head tube, Ai Offset · Fork: ALL-NEW Lefty Ocho, 27.5/29”, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 50/55mm offset

Archived: Fork: ALL-NEW Lefty Ocho, 27.5/29”, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 50/55mm offset · Rear shock: RockShox Monarch RL, 100mm

Archived: Shifters: SRAM NX Eagle, 12-speed · Rear derailleur: SRAM NX Eagle · Crankset: Truvativ Stylo 6K, 34T, Ai Custom · Bottom bracket: Cannondale BB30 · Rear cogs: SRAM PG-1230, NX Eagle, 10-50, 12-speed · Chain: SRAM NX Eagle, 12-speed

Archived: Brakes: Shimano MT500 hydro disc, 180/160mm RT56 rotors

Archived: Wheel size: 29" · Rims: WTB STX i23 TCS, 28h, tubeless ready · Hubs: Lefty 60 front, Formula 12x142 rear w/ HG driver · Front tire: Schwalbe Racing Ray Performance 27.5/29 x 2.25” front, Racing Ralph Performance 2.25” rear, Addix compound, tubeless ready · Rear tire: Schwalbe Racing Ray Performance 27.5/29 x 2.25” front, Racing Ralph Performance 2.25” rear, Addix compound, tubeless ready

Controls and contact points

Archived: Headset: Cannondale HeadShok Si · Handlebar: Cannondale C3 Flat, 6061 double-butted Alloy, 8° sweep, 760mm · Stem: Cannondale C3, 3D Forged 6061 Alloy, 1-1/8”, 31.8, 7° · Seatpost: Cannondale C3, 6061 Alloy, 31.6 x 400mm · Saddle: Fabric Scoop Shallow Sport, steel rails · Pedals: Not Included

Before and during the test ride

Follow the full used-bike inspection order →

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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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