Giant Defy 2 Compact Road Bike (2015) (White/Black/Blue) 2014
Brought to you by the world’s leading aluminum frame engineers, Defy redefines the performance possibilities of an aluminum road bike. Born in Giant’s own in-house aluminum forging facility and engineered with FluidForm ALUXX SL aluminum tubes, Defy blends comfort and control. Frame technologies include the OverDrive steerer tube for stiffness and sharp steering, the D-Fuse seatpost for vibration damping, and a PowerCore oversized bottom bracket area for stiff, efficient power transfer.
- ALUXX SL-grade aluminum frame with compliant D-Fuse composite seatpost
- Composite fork with alloy OverDrive steerer absorbs
- Giant S-R2 rims, Giant Tracker Sport hubs, stainless spokes
- Shimano Tiagra 10-speed shifting
- Tektro rim brakes
Sizes: XS, S, M, M/L, L, XL
Frame: ALUXX SL-grade aluminum
Fork: Composite, Alloy OverDrive steerer
Handlebar: Giant Connect, 31.8mm
Stem: Giant Sport
Seatpost: Giant D-Fuse, Composite
Saddle: Giant Performance Road
Pedals: Caged w/ toe clip and strap
Shifters: Shimano Tiagra
Front Derailleur: Shimano Tiagra
Rear Derailleur: Shimano Tiagra
Brakes: Tektro R312
Brake Levers: Shimano Tiagra
Cassette: Shimano Tiagra 12x30, 10-speed
Chain: KMC X10
Crankset: Shimano Tiagra, 34/50
Bottom Bracket: Sealed
Rims: Giant S-R2
Hubs: Giant Tracker Sport Road, 26h
Spokes: Stainless Steel, 14g
Tires: Giant S-R4, Front and rear specific, 700x25
In the late 1990s Giant pioneered a radical new frame shape to give its professional road racers a competitive edge. Driven by a desire to create lighter and faster bikes, Giant's Compact Road Design changed the look—and the performance capabilities—of competitive road bikes forever.
Now, 17 years later, Compact Road Design is still the standard in high-performance bikes. The concept is simple: A toptube that slopes downward from the headtube to the seattube reduces the size of the front and rear triangles. Smaller triangles create a lighter, stiffer bike.
Whatever the frame material, aluminum or composite, Compact Road Design improves the ride. Here's how:
Compact Road’s most distinctive feature, the downward-sloping toptube, results in smaller front and rear triangles on the frame. Because the triangles are smaller, less material is needed. Less material equals less weight.
Picture two triangles made from equal diameter tubing. The smaller, more compact triangle uses shorter tubes. The larger triangle requires longer tubes. It’s easy to see which is more structurally sound—the smaller triangle is stiffer, less susceptible to flexing and twisting. And on a performance road frame, stiffer is faster.
With traditional geometry, builders increase stiffness by using stiffer material. That might help you sprint faster but it also makes for a less comfortable ride. With Compact Road, Giant engineers are able to design frames with just the right amount of vertical compliance. You get a smoother, more comfortable ride.
Because of the sloping toptube and lower standover height, it’s easier for riders of all sizes to get the perfect fit. With greater adjustability and up to six sizes per series, even Giant’s most demanding pro athletes, women and men of all different heights, always have a perfect fit with stock-size frames. ALUXX SL:
Extremely lightweight framesets featuring high-performance strength-to-weight ratios
Predominantly features 6011 alloy for a high-performance strength-to-weight ratio
Double butting results in lighter weight without sacrificing strength
Features PressForming, WarmForming (advanced manipulation of tubeset shaping via an injection of high-pressure air) and FluidForming in select models
Features both Standard (double-pass weld technique without finish sanding/filing) and Smooth welding techniques for outstanding strength and weight
This product was added to our catalog on April 5, 2015.