Compact road Design

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Compact Road

 
At the heart of every Giant performance road bike is a unique frame design that was originally created to give pro road racers an advantage at major events like the Tour de France. Compact Road Design, introduced in 1997, has stood the test of time, winning countless pro races over the past 15 years and setting the performance benchmark for road riders of all levels.
 
The concept is simple: A toptube that slopes downward from the headtube to the seattube reduces the size of the front and rear triangles.
 
LIGHTER
 

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.

 

STIFFER
 
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.
 
SMOOTHER
 
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.
 
BETTER FIT
 
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 pro athletes, who range from women who are 5 feet tall to men who stand 6-foot-5, get a perfect fit with stock-size frames.
 

COMPACT ROAD SIZING

 
CONVENTIONAL FRAME SIZING (CM) RIDER HEIGHT COMPACT ROAD FRAME SIZE SEATTUBE / TOPTUBE LENGTH (CM)
49-51 5'2" - 5'4" XS 42/52
51-54 5'4" - 5'7" S 44/53.5
55-57 5'7" - 5'10" M 50/55.5
57-59 5'10" - 6'0" M/L 53.5/57
58-60 6'0" - 6'3" L 55.5/58.5
61-63 6'3" - 6'6" XL 58.5/61

WOMEN COMPACT ROAD SIZING

CONVENTIONAL FRAME SIZING (CM) RIDER HEIGHT COMPACT ROAD FRAME SIZE SEATTUBE / TOPTUBE LENGTH (CM)
49-51 5'2" - 5'4" XS 42/52
51-54 5'4" - 5'6" S 44/53.5
55-57 5'6" - 5'8" M 50/55.5
57-59 5'7" - 5'10" L 53.5 / 56.5