Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Giant
2018 Giant Defy Advanced SL 1
Value Guide market data · 2018 Giant Defy Advanced SL 1
12-month trend
7%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2018 Giant Defy Advanced SL 1
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Defy model years
2024$11,160 - $12,960▲ 31% vs. 2018
2023$6,045 - $7,020▼ 29% vs. 2018
2022$6,045 - $7,020▼ 29% vs. 2018
2021$6,045 - $7,020▼ 29% vs. 2018
2020$7,254 - $8,424▼ 15% vs. 2018
2019$5,175 - $6,010▼ 39% vs. 2018
2018$8,537 - $9,914Currently viewing
2017$4,371 - $5,076▼ 49% vs. 2018
2016$7,719 - $8,964▼ 10% vs. 2018
2015$9,579 - $11,124▲ 12% vs. 2018
2014$8,161 - $9,477▼ 4% vs. 2018
2013$6,417 - $7,452▼ 25% vs. 2018
2012$6,417 - $7,452▼ 25% vs. 2018
2011$5,441 - $6,318▼ 36% vs. 2018
2010$5,162 - $5,994▼ 40% vs. 2018
2009$3,302 - $3,834▼ 61% vs. 20182018 Defy Advanced SL 1 lineup
Overview
About this bike
2018 Giant Defy Advanced SL 1 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- Advanced SL-grade composite, Full-composite OverDrive 2 steerer
- Frame
- Advanced SL-grade composite, Integrated seatpost
Drivetrain
- Groupset
- 2018 Giant Defy Advanced SL 1
- Crankset
- Shimano Ultegra
- Bottom Bracket
- Shimano, Press Fit
- Chain
- KMC X11SL-1
- Front Derailleur
- Shimano Ultegra Di2
- Rear Derailleur
- Shimano Ultegra Di2
- Cassette/Rear Cogs
- Shimano Ultegra 11x34, 11-Speed
- Chainrings
- 34/50
- Shifters
- Shimano Ultegra Di2 Hydraulic
Brakes
- Brake Levers
- Shimano Ultegra Di2, hydraulic disc
- Brakes
- Shimano Ultegra Di2, hydraulic disc, 140mm
Cockpit
- Saddle
- Contact SLR Neutral
- Stem
- Giant Contact SLR with Stainless bolts
- Handlebars
- Giant Contact SLR, 31.8mm
- Seat Post
- Advanced SL-grade composite, integrated design
Wheels & Tires
- Hubs
- Giant SLR 1 DBL WheelSystem; Pawl driver, [F] 16h [R] 21h
- Tires
- Giant Gavia AC 0 Tubeless, 700x25, Folding
- Axles
- 12mm
- Spokes
- Giant SLR 1 DBL WheelSystem; Dynamic Balanced Lacing, bladed stainless
Accessories
- Accessories & Extras
- Ride Sense ANT+/Bluetooth
- Wheels/Rims
- Giant SLR 1 DBL WheelSystem; 30mm deep, 23mm wide, Tubeless, Full composite
- Color
- Matte Carbon Smoke/Grey/Neon Orange
Weight & Sizing
- Size
- X-Small / Medium/Large / Large / Medium / Small
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.