Velopedia Bicycle Archive
2018 Cannondale F-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 – Satin (BBQ)
- Geometry
- 4 manufacturer sizes
- In this record
- 22 specifications · archived image · geometry
- Archive ID
- 900002667
Model history 1 other year
Original buildCarbon · 29"
Frameset
| Frame Construction | F-Si, BallisTec Hi-MOD Carbon, SPEED SAVE, PF30A, 1.5 Si Head Tube, Ai Offset, 27.5” (S), 29” (M-XL) |
|---|---|
| Frame Material | Carbon |
| Fork | Lefty 2.0 Carbon, 2Spring, 100mm, XLR Isolated Damper Technology with XC+ tune and XLoc remote, 55mm offset (29), 50mm offset (27.5) |
| Fork Material | Carbon |
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, 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 Flat Race w/ Titanium Rails |
| Seatpost | Cannondale SAVE Full Carbon, 20mm Offset, 27.2x400mm |
Wheels & Tires
| Hubs | Lefty 60 front, C36 by DT-Swiss Rear, Star Ratchet, 135x9mm, 28 hole (Ai Offset dish - Rear), QR |
|---|---|
| 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 · 16 measurements
| Measurement | S (27.5") | M (29") | L (29") | XL (29") |
|---|---|---|---|---|
| Seat tube | 385 mm | 435 mm | 485 mm | 535 mm |
| Effective top tube | 570 mm | 596 mm | 622 mm | 649 mm |
| Top tube | 544 mm | 565 mm | 590 mm | 617 mm |
| Head tube | 97 mm | 97 mm | 110 mm | 122 mm |
| Head-tube angle | 69° | 69.7° | 69.8° | 69.9° |
| Seat-tube angle | 73.3° | 73.2° | 73.1° | 73° |
| Chainstay / rear center | 425 mm | 429 mm | 429 mm | 429 mm |
| Wheelbase | 1072 mm | 1097 mm | 1122 mm | 1147 mm |
| Bottom-bracket drop | 45 mm | 62 mm | 62 mm | 62 mm |
| Bottom-bracket height | 308 mm | 308 mm | 308 mm | 308 mm |
| Reach | 399 mm | 414 mm | 435 mm | 457 mm |
| Stack | 569 mm | 603 mm | 615 mm | 628 mm |
| Standover height | 737 mm | 777 mm | 806 mm | 837 mm |
| Fork offset / rake | 50 mm | 55 mm | 55 mm | 55 mm |
| Front center | 656 mm | 676 mm | 700 mm | 725 mm |
| Trail | 82 mm | 78 mm | 78 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 (3)

SRAM XX1 Eagle 12-Speed Rear Derailleur Lunar, 52T
52T

ENVE Twin Bolt Seatpost Black, 25mm Offset, 27.2x400mm
27.2x400mm
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 21 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 F-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: F-Si, BallisTec Hi-MOD Carbon, SPEED SAVE, PF30A, 1.5 Si Head Tube, Ai Offset, 27.5” (S), 29” (M-XL) · Fork: Lefty 2.0 Carbon, 2Spring, 100mm, XLR Isolated Damper Technology with XC+ tune and XLoc 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 remote, 55mm offset (29), 50mm offset (27.5)
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, 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, C36 by DT-Swiss Rear, Star Ratchet, 135x9mm, 28 hole (Ai Offset dish - Rear), QR · 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 SAVE Full Carbon, 20mm Offset, 27.2x400mm · Saddle: Fabric Scoop Flat Race w/ Titanium Rails
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.




