Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Cannondale
2018 Cannondale F-Si Carbon 4
Value Guide market data · 2018 Cannondale F-Si Carbon 4
12-month trend
7%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2018 Cannondale F-Si Carbon 4
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All F-Si model years
2018 F-Si Carbon 4 lineup
Overview
About this bike
2018 Cannondale F-Si Carbon 4 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Frame
- S: F-Si, BallisTec Carbon, SAVE, PF30A, 1.5 Si Head Tube, Ai Offset, 27.5" | M: 29" | XL: 29"
- Fork
- Lefty 2.0 Alloy OPI, 2Spring, 100mm, PBR Isolated Damper Technology with XC+ tune, 55mm offset (29), 50mm offset (27.5)
Drivetrain
- Groupset
- Shimano SLX
- Crank
- Cannondale Si, Ai, BB30, FSA 26/36 rings
- Bottom Bracket
- Cannondale Alloy PressFit30
- Chain
- KMC X11, 11-speed
- Rear Cogs
- SunRace, 11-40, 11-speed
- Front Derailleur
- Shimano SLX, direct mount
- Rear Derailleur
- Shimano XT, Shadow Plus, 11-speed
- Shifters
- Shimano SLX , 2x11
- Cassette
- SunRace, 11-40, 11-speed
- Chainrings
- FSA 26/36
- Crankset
- Cannondale Si
Brakes
- Brakes
- Shimano Deore MT500 hydro disc, 180/160mm (S-160/160mm)
- Brake Levers
- Shimano Deore MT500 hydro disc
Cockpit
- Handlebar
- Cannondale C3 flat, 6061 double-butted Alloy, 700mm
- Grips
- Cannondale Locking Grips
- Stem
- Cannondale C3, 6061 Alloy, 1.5", 31.8, -5°
- Headset
- Cannondale HeadShok Si
- Saddle
- Prologo K3
- Seatpost
- Cannondale C3, 6061 alloy, 27.2x350mm (XS,S,M) 400mm (L,X)
Wheels & Tires
- Rims
- WTB STP i19, Tubeless Ready
- Hubs
- Lefty 60 front, Formula DC-1422 (Ai Offset dish - Rear), QR
- Spokes
- DT Swiss Competition (Ai Offset dish - Rear)
- Tires
- Schwalbe Racing Ralph Performance 29/27.5x2.25"
- Front Tire
- Schwalbe Racing Ralph Performance 29/27.5x2.25"
- Wheel Size
- 27.5-inch
Pedals
- Pedals
- Not included
Accessories
- send bike details to my email
- PRINT BIKE DETAILS
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.