Actual Frame Size 47cm 50cm 52cm 54cm 56cm
GBottom bracket drop 7.2 7.2 7.2 7.0 7.0
HChainstay length 41.0 41.0 41.0 41.0 41.0
EEffective top tube 50.9 51.8 53.0 54.2 55.5
NFrame stack 52.5 54.5 56.1 57.6 59.3
DHead angle 71.1 ° 71.3 ° 72.2 ° 72.3 ° 72.4 °
CHead tube length 11.5 13.8 15.0 16.8 18.5
IOffset 5.0 5.0 4.5 4.5 4.5
MFrame reach 36.4 36.8 37.1 37.4 37.7
BSeat tube angle 74.6 ° 74.6 ° 74.2 ° 73.7 ° 73.3 °
ASeat tube 41.6 43.7 46.5 49.0 52.1
LStandover 69.5 71.3 73.3 75.4 77.8
JTrail 6.3 6.2 6.1 6.1 6.0
KWheelbase 97.6 98.4 97.9 98.7 99.4
Actual Frame Size 47cm 50cm 52cm 54cm 56cm
GBottom bracket drop 2.83 2.83 2.83 2.76 2.76
HChainstay length 16.14 16.14 16.14 16.14 16.14
EEffective top tube 20.04 20.39 20.87 21.34 21.85
NFrame stack 20.67 21.46 22.09 22.68 23.35
DHead angle 71.1 ° 71.3 ° 72.2 ° 72.3 ° 72.4 °
CHead tube length 4.53 5.43 5.91 6.61 7.28
IOffset 1.97 1.97 1.77 1.77 1.77
MFrame reach 14.33 14.49 14.61 14.72 14.84
BSeat tube angle 74.6 ° 74.6 ° 74.2 ° 73.7 ° 73.3 °
ASeat tube 16.38 17.20 18.31 19.29 20.51
LStandover 27.36 28.07 28.86 29.68 30.63
JTrail 2.48 2.44 2.40 2.40 2.36
KWheelbase 38.43 38.74 38.54 38.86 39.13

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.