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2018 Giant Defy Advanced SL 1

Launched at $5,610

Own a 2018 Giant Defy Advanced SL 1?

Track its value in your garage, or list it for sale locally in a few taps.

What a used one is worth

New

$2,441

$1,476 to $3,038

Like new

$2,319

$1,402 to $2,886

Excellent

$2,197

$1,328 to $2,734

Good

$1,831

$1,107 to $2,278

Fair

$1,343

$812 to $1,671

For parts

$732

$443 to $911

From the launch price, aged to 2026 and adjusted for condition. Guidance from our catalog, not an appraisal.

Fork: Advanced SL-grade composite, Full-composite OverDrive 2 steerer
Stem: Giant Contact SLR with Stainless bolts
Tires: Giant Gavia AC 0 Tubeless, 700x25, Folding
Brakes: Shimano Ultegra Di2, hydraulic disc, 140mm
Saddle: Contact SLR Neutral
Wheels: Giant SLR 1 DBL WheelSystem; 30mm deep, 23mm wide, Tubeless, Full composite
Cassette: Shimano Ultegra 11x34, 11-Speed
Crankset: Shimano Ultegra, 34/50
Seatpost: Advanced SL-grade composite, integrated design
Shifters: Shimano Ultegra Di2 Hydraulic
Handlebar: Giant Contact SLR, 31.8mm
Rear derailleur: Shimano Ultegra Di2

L: Reach mm: 390; Stack mm: 605; Chainstay mm: 420; Wheelbase mm: 1022; Head angle deg: 72.5; Seat angle deg: 73
M: Reach mm: 377; Stack mm: 567; Chainstay mm: 420; Wheelbase mm: 995; Head angle deg: 72.5; Seat angle deg: 73.5
S: Reach mm: 373; Stack mm: 546; Chainstay mm: 420; Wheelbase mm: 990; Head angle deg: 72; Seat angle deg: 74
XS: Reach mm: 365; Stack mm: 523; Chainstay mm: 420; Wheelbase mm: 983; Head angle deg: 71; Seat angle deg: 74.5
M/L: Reach mm: 381; Stack mm: 586; Chainstay mm: 420; Wheelbase mm: 1007; Head angle deg: 72.5; Seat angle deg: 73

MSRP as listed on the Giant Group US product page for this model year, accessed 2026-09-21.

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