Size A:
Input the size of your bike frame.
Size B1:
Measure the length from the crankset to the seatpost clamp.
Size B2:
For an integrated seatpost: measure the length from the crankset to the top of the seatpost.
Size C:
Measure the length from the rear dropout to the front dropout.
SIZE A
SIZE B1/B2
SIZE C
Please insert the meausurement in metric scale (cm)