Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
2018 Diamondback Century 3
Value Guide market data · 2018 Diamondback Century 3
12-month trend
9%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2018 Diamondback Century 3
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Century model years
2018 Century 3 lineup
Overview
About this bike
2018 Diamondback Century 3 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- DB Road Performance, Full Monocoque Carbon "CFT", 12mm Thru-axle Drop Outs, Flat Mount Disc Tabs, 1.5" Tapered Steerer Tube
- Frame
- DB Road Disc, Custom Fully Butted 7005 Series Alloy, Enhanced Performance Geometry (EPG), Formed Top Tube, w/ Integrated Headtube and Flat Mount Disc Brake Tab, 142x12mm Thru-axle Drop Outs
Drivetrain
- Groupset
- 2018 Diamondback Century 3
- Crankset
- Shimano FC-RS510
- Bottom Bracket
- Shimano Outboard Bearing
- Chain
- KMC X11EL, 11 Speed
- Front Derailleur
- Shimano 105 FD-5800, 31.8mm Band Clamp
- Rear Derailleur
- Shimano 105 RD-5800, 11 Speed
- Cassette/Rear Cogs
- Shimano 105 CS-5800 Cassette, 11 Speed, 11-32T
- Chainrings
- 50/34T
- Shifters
- Shimano 105 ST-5800, Dual Control 2x11 Speed
Brakes
- Brake Levers
- Shimano 105 ST-5800
- Brakes
- Tekro Spyre Flat Mount Disc, w/ 160mm Front / 140mm Rear Rotors
Cockpit
- Saddle
- Diamondback Performance Road
- Headset
- FSA No.42, Sealed Cartridge
- Stem
- HED Tour Stem, +/-7° Rise, 31.8mm Bar Bore
- Handlebars
- HED Tour Flat Top Drop Bar, 31.8 Bar Bore
- Seat Post
- HED Tour, 27.2mm
- Tape/Grips
- Diamondback Endurance Gel Tape
Wheels & Tires
- Hubs
- Front: 24h Alloy, Sealed Cartridge, 12mm Thru-axle<br> Rear: 24h Alloy, Sealed Cartridge, 142x12mm Thru-axle, Cassette
- Tires
- Diamondback Century Folding Bead, 700x28c
- Axles
- Front: 12mm thru-axle<br>Rear: 142x12mm thru-axle
- Spokes
- 14g Stainless Steel
Pedals
- Pedals
- Alloy Road Platform
Accessories
- Rims/Wheels
- HED Flanders C2+ Disc, 24h
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
Carbon inspection
Tap test the frame, fork, seatpost, and bars for cracks; verify no impact damage near dropouts.
Inspection
Brake hoses & cables
Check hydraulic line bleed, cable housing wear, and confirm rotors are within spec.