Actual Frame Size 15.5" 17.5" 19" 21" 23"
ASeat tube 39.4 44.5 48.3 53.3 58.4
BSeat tube angle 73.0 ° 72.5 ° 72.0 ° 72.0 ° 72.0 °
CHead tube length 10.3 10.3 10.3 11.8 11.8
DHead angle 69.3 ° 69.3 ° 69.6 ° 69.6 ° 69.6 °
EEffective top tube 57.0 60.2 62.2 64.3 66.3
FBottom bracket height 31.2 31.2 31.2 31.2 31.2
GBottom bracket drop 5.3 5.3 5.3 5.3 5.3
HChainstay length 44.5 44.5 44.5 44.5 44.5
IOffset 5.1 5.1 5.1 5.1 5.1
JTrail 8.3 8.3 8.1 8.1 8.1
KWheelbase 109.0 111.6 112.7 114.8 116.9
LStandover 75.4 77.5 79.5 82.8 85.9
MFrame reach 38.6 41.2 42.6 44.2 46.2
NFrame stack 60.2 60.2 60.3 61.7 61.7
Actual Frame Size 15.5" 17.5" 19" 21" 23"
ASeat tube 15.51 17.52 19.02 20.98 22.99
BSeat tube angle 73.0 ° 72.5 ° 72.0 ° 72.0 ° 72.0 °
CHead tube length 4.06 4.06 4.06 4.65 4.65
DHead angle 69.3 ° 69.3 ° 69.6 ° 69.6 ° 69.6 °
EEffective top tube 22.44 23.70 24.49 25.31 26.10
FBottom bracket height 12.28 12.28 12.28 12.28 12.28
GBottom bracket drop 2.09 2.09 2.09 2.09 2.09
HChainstay length 17.52 17.52 17.52 17.52 17.52
IOffset 2.01 2.01 2.01 2.01 2.01
JTrail 3.27 3.27 3.19 3.19 3.19
KWheelbase 42.91 43.94 44.37 45.20 46.02
LStandover 29.68 30.51 31.30 32.60 33.82
MFrame reach 15.20 16.22 16.77 17.40 18.19
NFrame stack 23.70 23.70 23.74 24.29 24.29

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