The ultimate race bike for the rough and tumble realities of modern XC.

This ultralight, super efficient speed machine features unique XC geometry that lets you own the climbs, rule the descents and decimate the competition.

The best climbing, best descending, all-around fastest XC race dually ever made.
Rider Profile - World Cup XC racers, marathon racers, and anyone else with dreams of fast-paced XC glory.

Wheel/ Tyre Size - 27.5 (XS, S) 29 (M, L, X) X2.25”
Travel - 100mm F/R

Rider Position - Pure Modern XC. Low flat back, centered weight distribution.

Intended Use


Insane Traction - Without Compromise - Proprietary Ai offset drivetrain delivers super short chainstays for climb-winning traction and agile handling, without sacrificing mud/tire clearance or limiting you to single ring set-ups.

XC Agility Meets All-Mountain Stability - OutFront Steering Geometry gives you the best of both worlds: slack and stable on hectic descents, yet quick and nimble everywhere else.

The Best XC Fork. Period.Unbelievably smooth and precise, the all-new Lefty Ocho out-corners, out-handles and flat-out rides circles around its XC competition. Its custom extra-long fork offsets (rake) make our OutFront Steering Geometry possible.

Explosive Stiffness Just say no to energy-wasting flex. Scalpel Si is the stiffest XC dually going, thanks to the evenly dished Ai rear wheel, super short chainstays, LockR locking axles and BallisTec Carbon Construction.


1) Modern XC Geometry - Short Chainstays for traction and agility, Slack Head Angle for stability at speed, Tight “Trail” Measurement for nimble handling at slower speeds. Spot on for modern XC.

2) Ultra Light Weight - New Lefty Ocho fork, BallisTec Carbon Frame and Zero Pivot stays all add up to not much…weight. Scalpel-Si is the lightest XC dually on the market.

3) Integrated Di2 Battery Housing - Internal Top Tube Di2 Battery holder. Easily accessible. Allows use of stealth dropper post and Di2.

4) Two Watter Bottles - Hallelujah! Proper marathon hydration, wtihout the pack.

5) Clean Cable Management - Interchangeable in-headtube cable guides hold the housing securely and support every possible cable configuration.

6) Ultralight Carbon Sock Link - Adding lightness to every model.


Frame: Scalpel-SI, 100mm, Smartform C1 Alloy, Zero Pivot Seatstay, Carbon Link, PF30, 1.5 Si Head Tube, Ai Offset

Fork: Rockshox Reba Rl, 100mm, Solo Air, 15x100, Tapered Steerer, 42mm Offset

Rear Shock: Rockshox Monarch Rl, 100mm

Rims: WTB Stx I23 Tcs, 28H, Tubeless Ready

Hubs: Formula 15x100 Front, 12x142 Rear W/ HG Driver

Spokes: DT Swiss Champion (Ai Offset Dish - Rear)

Tyres: WTB Ranger Comp, 27.5/29 X 2.25”, DNA Compound

Pedals: Not Included

Crank: Cannondale Si, BB30, 32T

Bottom Bracket: Cannondale BB30

Chain: KMC X11, 11-speed

Rear Cogs: Sunrace, 11-46, 11-speed

Rear Derailleur: Shimano Deore XT

Shifters: Shimano SLX, 11-speed

Handlebar: Cannondale C3 Flat, 6061 Double-butted Alloy, 8° Sweep, 760mm

Grips: Cannondale Locking Grips

Stem: Cannondale C3, 3D Forged 6061 Alloy, 1-1/8”, 31.8, 7°

Headset :Tange 1.5 For Tapered Steer Tubes

Brakes: Shimano Mt400 Hydro Disc, 180/160mm Rt56 Rotors

Brake Levers: Shimano MT400 Hydro Disc

Saddle: Cannondale Stage 3

Seatpost: Cannondale C3, 6061 Alloy, 31.6 X 400mm

Sizes: S, M, L, XL

Colour 1: Acid Green W/ Black Pearl - Gloss (AGR)


Please note that this information is provided only as a guide; for the best sizing information we always recommend visiting your local Bikebug store.

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