2025

Giant Defy Advanced 1

With effortless efficiency and quiet compliance, this lightweight endurance road machine helps you ride stronger and longer. The composite frame and purpose-built components smooth out rough roads and minimise fatigue.

Select color

Frost Silver

Select size

View sizing guide

~~$4,999.00~~ AUD $4,599.00 AUD

SOLD OUT

Highlights

Functional simplicity
Free of cumbersome gimmickry, the frameset is one of the lightest in its category. With a perfect balance of high-performance reactivity and all-day comfort, it offers a “less is more” experience for modern endurance road riding.

Engineered compliance
Advanced-grade composite frame and fork are specifically engineered for endurance road riding, delivering a smooth and efficient ride quality that minimises fatigue on long rides. The new D-Fuse components work together to further absorb road shocks and vibrations.

Total control
New Contact D-Fuse handlebar features ergonomic shaping and an 8-degree flare for comfort and control on all-day rides. Wide, alloy rims are optimised for high-volume tubeless tyres (up to 38mm), providing predictable handling and stability from asphalt to cobbles.

Sizing guide

Size	cm feet
XS	157cm - 169cm 5’2” - 5’7”
S	165cm - 175cm 5’5” - 5’9”
M	171cm - 181cm 5’7” - 5’11”
ML	177cm - 187cm 5’10” - 6’2”
L	183cm - 193cm 6’0” - 6’4”
XL	189cm - 199cm 6’2” - 6’6”

Geometry

	XS	S	M	ML	L	XL
Seat Tube Length	XS410	S445	M480	ML515	L535	XL565
Seat Tube Angle	XS74.5°	S74.0°	M73.5°	ML73.0°	L73.0°	XL73.0°
Top Tube Length	XS515	S530	M545	ML560	L575	XL595
Head Tube Length	XS120	S140	M150	ML175	L195	XL215
Head Tube Angle	XS70.5°	S71.75°	M72.5°	ML72.5°	L72.5°	XL72.5°
Fork Rake (mm)	XS50	S50	M50	ML50	L50	XL50
Trail	XS71.6	S63.4	M58.6	ML58.6	L58.6	XL58.6
Wheelbase	XS995	S994.4	M998	ML1010	L1025	XL1040
Chain Stay Length	XS420	S420	M420	ML420	L420	XL420
Bottom Bracket Drop	XS75	S75	M75	ML70	L70	XL70
Stack	XS527	S541	M558	ML577	L596	XL615
Reach	XS369	S374.3	M380	ML384	L393	XL402
Stand Over Height	XS705	S716	M762	ML796	L814	XL841
Stem Length	XS80	S90	M100	ML100	L110	XL110
Crank Length	XS170	S170	M172.5	ML172.5	L175	XL175
Wheel Size	XS700C	S700C	M700C	ML700C	L700C	XL700C

Technical specifications

Size	XS, S, M, M/L, L, XL
Colours	Frost Silver
Frame	Advanced-Grade Composite, disc
Fork	Advanced-Grade Composite, full-composite OverDrive steerer, disc
Shock	N/A
Handlebar	Giant Contact SL D-Fuse XS:40/42cm, S:40/42cm, M:42/44cm, M/L:42/44cm, L:44/46cm, XL:44/46cm
Grips	Stratus Lite 3.0
Stem	Giant Contact AeroLight XS:80mm, S:90mm, M:100mm, M/L:100mm, L:110mm, XL:110mm
Seatpost	Giant D-Fuse, composite, 14mm offset
Saddle	Giant Approach
Pedals	N/A
Shifters	Shimano 105 Di2 ST-R7170
Front Derailleur	Shimano 105 Di2 FD-7150
Rear Derailleur	Shimano 105 Di2 RD-7150
Brakes	Shimano 105 Di2 hydraulic, Giant MPH rotors [F]160mm, [R]160mm
Brake Levers	Shimano 105 Di2
Cassette	Shimano 105, 12-speed, 11x36
Chain	KMC X12L-1
Crankset	Shimano 105, 34/50 XS:170mm, S:170mm, M:172.5mm, M/L:172.5mm, L:175mm, XL:175mm
Bottom Bracket	Shimano, press fit
Rims	Giant P-R2 Disc wheelset, alloy
Hubs	Giant P-R2 Disc wheelset, alloy Giant alloy, 12mm thru-axle
Spokes	Sapim
Tires	Giant Gavia Fondo 1, tubeless, 700x32c (33.5mm), folding
Extras	Water bottle cages, tubeless prepared, 38mm max tyre size
Weight	The most accurate way to determine any bike’s weight is to have your local dealer weigh it for you. Many brands strive to list the lowest possible weight, but in reality weight can vary based on size, finish, hardware and accessories. All our bikes are designed for best-in-class weight and ride quality.