Actual Frame Size 50cm 52cm 54cm 56cm 58cm 61cm
ASeat tube 47.6 49.3 51.3 53.3 55.3 58.3
BSeat tube angle 75.0 ° 74.5 ° 74.0 ° 73.6 ° 73.3 ° 73.0 °
CHead tube length 11.0 12.3 13.8 15.7 17.6 20.5
DHead angle 71.0 ° 71.5 ° 72.0 ° 72.0 ° 72.3 ° 72.3 °
EEffective top tube 51.8 53.1 54.4 55.8 57.0 58.8
GBottom bracket drop 7.0 7.0 6.8 6.8 6.5 6.5
HChainstay length 42.5 42.5 42.5 42.5 42.5 42.5
IOffset 4.5 4.5 4.5 4.5 4.5 4.5
JTrail 7.4 7.1 6.7 6.7 6.6 6.6
KWheelbase 100.1 100.5 101.0 102.0 102.8 104.3
LStandover 74.7 76.1 77.9 79.6 81.6 84.3
MFrame reach 37.5 37.9 38.3 38.7 39.1 39.7
NFrame stack 53.4 54.7 56.2 58.0 59.7 62.4
Actual Frame Size 50cm 52cm 54cm 56cm 58cm 61cm
ASeat tube 18.74 19.41 20.20 20.98 21.77 22.95
BSeat tube angle 75.0 ° 74.5 ° 74.0 ° 73.6 ° 73.3 ° 73.0 °
CHead tube length 4.33 4.84 5.43 6.18 6.93 8.07
DHead angle 71.0 ° 71.5 ° 72.0 ° 72.0 ° 72.3 ° 72.3 °
EEffective top tube 20.39 20.91 21.42 21.97 22.44 23.15
GBottom bracket drop 2.76 2.76 2.68 2.68 2.56 2.56
HChainstay length 16.73 16.73 16.73 16.73 16.73 16.73
IOffset 1.77 1.77 1.77 1.77 1.77 1.77
JTrail 2.91 2.80 2.64 2.64 2.60 2.60
KWheelbase 39.41 39.57 39.76 40.16 40.47 41.06
LStandover 29.41 29.96 30.67 31.34 32.13 33.19
MFrame reach 14.76 14.92 15.08 15.24 15.39 15.63
NFrame stack 21.02 21.54 22.13 22.83 23.50 24.57

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 authorized Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs