Actual Frame Size 44cm 47cm 50cm 52cm 54cm 56cm
ASeat tube 39.8 41.6 43.7 46.5 49.0 52.1
BSeat tube angle 74.6 ° 74.6 ° 74.6 ° 74.2 ° 73.7 ° 73.3 °
CHead tube length 11.0 12.5 14.5 15.8 17.5 19.3
DHead angle 70.3 ° 71.1 ° 71.3 ° 72.0 ° 72.1 ° 72.2 °
EEffective top tube 50.0 50.9 51.8 53.0 54.2 55.5
GBottom bracket drop 7.2 7.2 7.2 7.2 7.0 7.0
HChainstay length 41.0 41.0 41.0 41.0 41.0 41.0
IOffset 5.0 5.0 5.0 4.7 4.7 4.7
JTrail 6.8 6.3 6.2 6.0 6.0 5.9
KWheelbase 97.3 97.6 98.4 98.3 99.1 99.8
LStandover 68.6 70.2 72.7 74.9 77.0 79.3
MFrame reach 36.0 36.4 36.8 37.1 37.4 37.7
NFrame stack 50.8 52.5 54.5 56.0 57.5 59.2
Seat height minimum 55.5 59.5 62.5 65.5 68.0 71.0
Seat height maximum 65.5 69.5 72.5 75.5 78.0 81.0
Actual Frame Size 44cm 47cm 50cm 52cm 54cm 56cm
ASeat tube 15.67 16.38 17.20 18.31 19.29 20.51
BSeat tube angle 74.6 ° 74.6 ° 74.6 ° 74.2 ° 73.7 ° 73.3 °
CHead tube length 4.33 4.92 5.71 6.22 6.89 7.60
DHead angle 70.3 ° 71.1 ° 71.3 ° 72.0 ° 72.1 ° 72.2 °
EEffective top tube 19.69 20.04 20.39 20.87 21.34 21.85
GBottom bracket drop 2.83 2.83 2.83 2.83 2.76 2.76
HChainstay length 16.14 16.14 16.14 16.14 16.14 16.14
IOffset 1.97 1.97 1.97 1.85 1.85 1.85
JTrail 2.68 2.48 2.44 2.36 2.36 2.32
KWheelbase 38.31 38.43 38.74 38.70 39.02 39.29
LStandover 27.01 27.64 28.62 29.49 30.31 31.22
MFrame reach 14.17 14.33 14.49 14.61 14.72 14.84
NFrame stack 20.00 20.67 21.46 22.05 22.64 23.31
Seat height minimum 21.85 23.43 24.61 25.79 26.77 27.95
Seat height maximum 25.79 27.36 28.54 29.72 30.71 31.89

Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs