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Measure your inseam from crotch (straddle a book spine and press up) to ground standing in your cycling shoes, this is your minimum clearance. Then, select a road bike size with a standover measurement that is at least 1 to 2 inches less than your minimum clearance.

Size

50

53

55

58

61

 

 

HT ANGLE

72

72

72.5

73

73.5

 

 

ST ANGLE

74.5

74

73.5

73

73

 

 

TT LENGTH

525

535

550

570

590

 

 

BB DROP

70

70

70

70

70

 

 

CHAIN STAY

406

406

406

406

406

 

 

WHEELBASE

972

979

985

996

1011

 

 

FORK RAKE

45

45

45

45

43

 

 

STANDOVER

738 (29.06")

750 (29.53")

768 (30.24")

782 (30.78")

794 (31.25")

 

 

best way to pick size; get a frame you can clear the standover measurement by 1 to 2 inches

Doublecheck your fit against the specific model geometry prior to ordering

Size down if you have a short upper body/arms or for more aggressive riding style or lower handlebars

Size up if you have long upper body/arms or if you simply prefer a larger bike in general (and don't need the straddle clearance) or you desire higher handlebars


These are general guidelines
Your Personal preferences should determine your size choice - it is up to you.
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