Velopedia Bicycle Archive
2018 Cannondale Scalpel-Si Carbon 1
Original specifications: 29" wheels · geometry for 4 published sizes.
Selling this bike? Create a shareable bike record
At a glance
- Model year
- 2018
- Category
- Mountain
- Sizes
- S (27.5"), M (29"), L (29"), XL (29")
- Colors
- Jet Black w/ Volt and Anthracite - Gloss (VLT)
- Geometry
- 4 manufacturer sizes
- In this record
- 23 specifications · archived image · geometry
- Archive ID
- 900002560
Original buildCarbon · 29"
Frameset
| Frame Construction | Scalpel-Si, 100mm, BallisTec Hi-MOD Carbon, Zero Pivot seatstay, Carbon Link, PF30, 1.5 Si head tube, Ai Offset |
|---|---|
| Frame Material | Carbon |
| Fork | Lefty 2.0 Carbon, 2Spring, 100mm, XLR Isolated Damper Technology with XC+ tune and XLoc Full Sprint remote, 55mm offset (29), 50mm offset (27.5) |
| Fork Material | Carbon |
| Rear Shock | RockShox Monarch XX, 100mm Travel, Remote |
Drivetrain
| Shifters | SRAM X01 Eagle, 12-speed |
|---|---|
| Rear Derailleur | SRAM XX1 Eagle, Type 3 RBC, 12-speed |
| Crankset | Truvativ Stylo Carbon Eagle, BB30, 34T, Ai Custom |
| Bottom Bracket | Cannondale Alloy PressFit30 |
| Rear Cogs | SRAM XG-1295 Eagle, 10-50, 12-speed |
| Chain | SRAM Eagle 12-speed |
Brakes
| Brakes | SRAM Level TLM, custom flat mount rear, Centerline Rotors 180/160mm |
|---|
Cockpit & Contact Points
| Headset | Cannondale HeadShok Si |
|---|---|
| Handlebar | Cannondale C1 flat, Carbon, 760mm |
| Stem | Cannondale C1, 7075 Alloy, 31.8, -5° |
| Saddle | Fabric Scoop Shallow Elite |
| Seatpost | Cannondale C1 Full Carbon, 31.6x420mm |
Wheels & Tires
| Hubs | Lefty 60 front, HollowGram by DT Swiss Rear, Star Ratchet, 142x12 , 28 hole (Ai Offset dish - Rear) |
|---|---|
| Rims | HollowGram 23, Superlight Hi-Impact Carbon, Tubeless Ready, 28hole, 23mm inner |
| Spokes | DT Swiss Aerolite (Ai Offset dish - Rear) |
| Front Tire | Schwalbe Rocket Ron EVO Snakeskin, 29x2.25”, folding, Tubeless Ready |
| Rear Tire | Schwalbe Rocket Ron EVO Snakeskin, 29x2.25”, folding, Tubeless Ready |
| Wheel Size | 29" |
Geometry
Frame measurements by size.
Published frame view
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 15 measurements
| Measurement | S (27.5") | M (29") | L (29") | XL (29") |
|---|---|---|---|---|
| Seat tube | 400 mm | 440 mm | 480 mm | 520 mm |
| Effective top tube | 570 mm | 599 mm | 624 mm | 648 mm |
| Head tube | 97 mm | 110 mm | 122 mm | 134 mm |
| Head-tube angle | 69.5° | 69.5° | 69.5° | 69.5° |
| Seat-tube angle | 73.5° | 73.5° | 73.5° | 73.5° |
| Chainstay / rear center | 425 mm | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1079 mm | 1118 mm | 1144 mm | 1169 mm |
| Bottom-bracket drop | 20 mm | 38 mm | 38 mm | 38 mm |
| Bottom-bracket height | 333 mm | 334 mm | 334 mm | 334 mm |
| Reach | 407 mm | 424 mm | 445 mm | 466 mm |
| Stack | 550 mm | 592 mm | 604 mm | 615 mm |
| Standover height | 716 mm | 754 mm | 760 mm | 766 mm |
| Fork offset / rake | 50 mm | 55 mm | 55 mm | 55 mm |
| Front center | 653 mm | 685 mm | 711 mm | 735 mm |
| Trail | 75 mm | 77 mm | 77 mm | 77 mm |
Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Parts & serviceability
Find replacement parts

Schwalbe Magic Mary Evolution Tubeless Tire - 29in Black, Addix Soft Snakeskin, 29x2.25in
29x2.25in
Replacement option · verify fit
More parts (5)


ENVE Twin Bolt Seatpost - Zero Offset UD Carbon, 31.6x400mm
31.6x400mm
Replacement option · verify fit
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.
Bike-specific inspection checklist 23 checks based on 6 archived component groups Open checklistClose checklist
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.
Identity and fit
Follow the full used-bike inspection order →Archived: 2018 Cannondale Scalpel-Si Carbon 1 · Mountain · Published sizes: S (27.5"), M (29"), L (29"), XL (29")
Frame and fork
Inspect the frame and fork →Archived: Frame: Scalpel-Si, 100mm, BallisTec Hi-MOD Carbon, Zero Pivot seatstay, Carbon Link, PF30, 1.5 Si head tube, Ai Offset · Fork: Lefty 2.0 Carbon, 2Spring, 100mm, XLR Isolated Damper Technology with XC+ tune and XLoc Full Sprint remote, 55mm offset (29), 50mm offset (27.5) · Carbon
Suspension
Evaluate the suspension →Archived: Fork: Lefty 2.0 Carbon, 2Spring, 100mm, XLR Isolated Damper Technology with XC+ tune and XLoc Full Sprint remote, 55mm offset (29), 50mm offset (27.5) · Rear shock: RockShox Monarch XX, 100mm Travel, Remote
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM X01 Eagle, 12-speed · Rear derailleur: SRAM XX1 Eagle, Type 3 RBC, 12-speed · Crankset: Truvativ Stylo Carbon Eagle, BB30, 34T, Ai Custom · Bottom bracket: Cannondale Alloy PressFit30 · Rear cogs: SRAM XG-1295 Eagle, 10-50, 12-speed · Chain: SRAM Eagle 12-speed
Brakes
Inspect the brakes →Archived: Brakes: SRAM Level TLM, custom flat mount rear, Centerline Rotors 180/160mm
Wheels and tires
Check wheels and tires →Archived: Wheel size: 29" · Rims: HollowGram 23, Superlight Hi-Impact Carbon, Tubeless Ready, 28hole, 23mm inner · Hubs: Lefty 60 front, HollowGram by DT Swiss Rear, Star Ratchet, 142x12 , 28 hole (Ai Offset dish - Rear) · Front tire: Schwalbe Rocket Ron EVO Snakeskin, 29x2.25”, folding, Tubeless Ready · Rear tire: Schwalbe Rocket Ron EVO Snakeskin, 29x2.25”, folding, Tubeless Ready
Controls and contact points
Archived: Headset: Cannondale HeadShok Si · Handlebar: Cannondale C1 flat, Carbon, 760mm · Stem: Cannondale C1, 7075 Alloy, 31.8, -5° · Seatpost: Cannondale C1 Full Carbon, 31.6x420mm · Saddle: Fabric Scoop Shallow Elite
Before and during the test ride
Follow the full used-bike inspection order →Have you owned this bike?Help preserve its real-world history by sharing your owner experience.
Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.
Already contributed? Send me a fresh private edit link
For privacy, Velopedia shows the same confirmation whether or not an experience exists.
Checking current listings…
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.



