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OverDrive

Giant’s original oversized fork steerer tube technology. Designed to provide solid front-end steering performance, the system’s oversized headset bearings and tapered steerer tube work in conjunction to provide optimal steering stiffness.

Modified Monocoque

Similar to Monocoque technology, but Modified Monocoque eliminates the outermost woven composite sheet (found on heavier framesets) to reduce weight without affecting ride quality, strength or stiffness.

PowerCore

A massively oversized bottom-bracket/chainstay area features a fully integrated, 86-millimeter-wide bottom-bracket design. Asymmetric chainstays provide additional stiffness on the driveside and stability on the non-driveside.

MegaDrive

A massive rectangular downtube and oversized toptube work in unison to provide superior front-end lateral and torsional steering precision. The precisely engineered, rectangular shaped downtube yields unprecedented pedaling stiffness.

Vector Seatpost

This full-composite, lightweight (210 grams) and highly aerodynamic seatpost is engineered specifically for the unyielding demands of the performance-minded road rider. Increased fore/aft stiffness provides maximum energy transmission, improved aerodynamics (compared to a traditional round seatpost) and two offset options (10 or 23 millimeters).

Computer Tuned

To minimize weight, Giant engineers use FEA (Finite Element Analysis) to develop a strategic layup schedule of Uni-Directional and woven composite. This ensures the precise amount of composite material where a frame requires it and minimizes excess material where the structure doesn’t.

RideSense Ready

Frame comes prepared to accept the Giant RideSense sensor and accompanying hardware.

Defy Composite 3

Model year 2013

$1,700

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Overview

IT’S SIMPLE: THE BETTER YOUR BIKE FEELS, THE LONGER YOU’LL RIDE. HAMMER UP CLIMBS, FLY DOWN DESCENTS—ALL DAY LONG.

A versatile design with a longer wheelbase and slightly taller headtube for endurance positioning produces a lightweight, smooth riding feel that makes the road disappear beneath you. Crafted from Giant’s Composite material, the all-new Defy Composite features innovative technologies including the PowerCore bottom bracket and OverDrive headtube for stiff pedaling efficiency and razor-sharp handling. The frame is also RideSense-ready, for use with Giant’s wireless ANT+ data device.

Related Models

See matching Women's model

 

Features

  • Shimano Tiagra 10-speed drivetrain
  • Advanced-Grade composite fork with full-composite OverDrive steerer
  • Giant Vector Composite seatpost
  • Giant P-R2 double wall rims, sealed bearing hubs, DT Swiss Competition butted spokes wheelset
  • Sizes: XS, S, M, M/L, L, XL
  • Colors: White/Black/Blue, Blue/White/Silver

Technologies

Specifications

Frame

SizesXS, S, M, M/L, L, XL
ColorsWhite/Black/Blue, Blue/White/Silver
FrameGiant Composite Technology
ForkAdvanced-Grade Composite, Alloy OverDrive Steerer
Shock N/A

Components

HandlebarGiant Connect, 31.8
StemGiant Sport
Seatpost Giant Vector Composite
Saddle Giant Performance Road, Men's
PedalsN/A

Drivetrain

ShiftersShimano Tiagra
Front DerailleurShimano Tiagra
Rear DerailleurShimano Tiagra
BrakesTektro TK-R540 Giant Specific, Dual Pivot
Brake LeversShimano Tiagra
CassetteShimano Tiagra 12x28, 10-Speed
ChainKMC X10
CranksetShimano Tiagra, 34/50
Bottom BracketShimano, Press Fit

Wheels

RimsGiant P-R2, Double Wall
HubsGiant Sealed Bearing, 24/28h
SpokesDT Swiss Competition, 14/15g
TiresGiant P-R3, 700x23, Flat Guard, Front and Rear Specific

Other

ExtrasRideSense Ready
WeightThe 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 Giant bikes are designed for best-in-class weight and ride quality.

Geometry

SizeHead AngleSeat AngleTop TubeReachHead TubeStackChain StayWheel BaseStandover Height
CentimetersDegreesDegreesCentimetersCentimetersCentimetersCentimetersCentimetersCentimetersInches
XS/43.071.074.051.5N/A12.5N/A42.098.329.0
S/46.572.074.053.0N/A14.5N/A42.099.029.7
M/50.072.573.554.5N/A16.5N/A42.099.530.6
M/L53.572.573.056.0N/A18.5N/A42.0100.731.1
L/55.572.573.057.5N/A20.5N/A42.0102.232.0
XL/58.572.572.559.5N/A22.5N/A42.0103.732.8

All specifications and prices listed are subject to change without notice.