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2021 Cannondale

Scalpel-Si Carbon 4

A 27.5″ / 29″ carbon frame full suspension crosscountry bike with high-end components.
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Manufacturer Price

$4,500
Weight26.2 lbs  
FrameCarbon
SuspensionFull, 100 / 100mm
ForkCannondale Lefty Ocho
ShockRockShox Monarch RL
Wheels27.5″ / 29″ Aluminum
Drivetrain1 × 12
GroupsetGX Eagle, NX Eagle
BrakesSRAM Level TL Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

27 mph

Scalpel-Si Carbon 4

27 mph

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Highest gear

(descending)

Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

Rider Fit Notes

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Reviews
MBR
Cannondale Scalpel-Si Carbon SE review - MBR

Apr 2019 · Alan Muldoon

Cannondale Scalpel SE's extra travel front and rear, and components like 150mm dropper post, makes it a different animal to its race stablemates.

Highs
  • Sleek carbon frame construction

Lows
  • Short, tall geometry

Read Review

Bicycling
The 2019 Cannondale Scalpel-Si Carbon 2 Is Quicker Than Ever

Sep 2018 · Riley Missel

With a brand-new fork and lockout system, Cannondale's cross-country bike got a whole lot better.

Read Review

Geometry
Specs
Build
Frame

BallisTec Carbon, 100mm travel, Zero Pivot seatstay, Carbon Link, PF30-83, 1.5 Si head tube, Ai Offset, 100mm travel, Zero Pivot seatstay, Carbon Link, PF30-83, 1.5 Si head tube, Ai Offset

BB StandardPF30, 83mm, Press Fit

Fork

Lefty Ocho, 27.5/29", 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 50/55mm offset

Travel100mm

Shock

RockShox Monarch RL

Travel100mm

Bottom Bracket

SRAM DUB PF30 MTB83

Headset

Integrated, 1-1/8 to 1.5", sealed angular contact bearings (Integrated steer stop size small only)

Stem

Cannondale 3, 6061 Alloy, 31.8, 7°

Handlebar

Cannondale 2 Flat, butted 2014 Alloy, 31.8mm, 3° rise, 8° sweep, 760mm

Saddle

Fabric Scoop Flat Elite, cro-mo rails

Seatpost

Cannondale 2, 7075 Alloy, 31.6 x 400mm

TypeRigid

Grips

Cannondale Locking Grips

Groupset
Rear Derailleur

SRAM GX Eagle

Crank

Truvativ Stylo 6K DUB, 34T, Ai offset

Shifters

SRAM NX Eagle, 12-speed

Cassette

SRAM PG-1230, NX Eagle, 11-50, 12-speed

Chain

SRAM NX Eagle, 12-speed

Brakes

SRAM Level TL hydro disc, 180/160mm Centerline rotors

TypeSRAM Level TL Hydraulic Disc

Brake Levers

SRAM Level TL hydro disc

Wheels
Rims

Stan's NoTubes Crest S1, 28h, tubeless ready

Spokes

DT Swiss Competition (Ai Offset dish - rear)

Front Hub

(F) Lefty 60

Rear Hub

(R) Formula 12x142 w/ HG driver

Tires

Front: (F) Schwalbe Racing Ray Performance 27.5/29 x 2.25", Addix Compound, tubeless ready, Rear: (R) Schwalbe Racing Ralph Performance 27.5/29 x 2.25", Addix Compound, tubeless ready

Rider Notes
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First added July 15

Last updated October 31

Not listed for 2,060 days