Geometry  XS(14)  S(16)  M(18)  L(20)
       
 wheelbase 41.5 42.5 42.5 42.5
 top tube (effective)* 21.7 22.7 23.1 23.7
 bb height 11.7 11.7 11.7 11.7
 angles 70/73 70/73 70/73 70/73
 chainstay 16.6 16.6 16.6 16.6
 standover 28 29 30 31
 Head Tube 4.75 4.75 5.25 6.0
1 1/4 inch (31.8mm) Clamp Top Pull Front Deraileur
1 1/8 inch Head Tube/ 27.2 mm Seat Post Size/68mm BB Shell

General Sizing Suggestions XS = 5'-5'6 S= 5'4-5'10

M = 5'8-6'1 L= 5'11-6'4"

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*Mrazek Top Tube Measurements are unique in that our upper seat tubes are laid back more than traditional straight tubed frames. The effect is that the higher your saddle is set up, the longer your effective top tube and reach. Check our sizing suggestions to begin and if you are uncertain we can give you a precise fit if you supply us with the following measurements from a current bike: Crank bolt to back top of saddle, nose of saddle set back from crank bolt, bar-stem junction to back top of saddle, and stem length.