Fit & sizing /

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.

Display measurements in

Geometry


  15.5" 17.5" 18.5" 19.5" 21.5"
Actual Frame Size 15.5" 16.5" 17.5" 18.5" 20.5"
ASeat tube 36.8cm 41.9cm 44.5cm 47.0cm 52.1cm
BSeat tube angle 73.0 ° 73.0 ° 73.0 ° 73.0 ° 73.0 °
CHead tube length 9.5cm 10.0cm 11.0cm 12.0cm 14.0cm
DHead angle 68.0 ° 68.0 ° 68.0 ° 68.0 ° 68.0 °
EEffective top tube 55.5cm 58.8cm 60.8cm 62.7cm 65.3cm
FBottom bracket height 33.3cm 33.3cm 33.3cm 33.3cm 33.3cm
GBottom bracket drop 1.7cm 1.7cm 1.7cm 1.7cm 1.7cm
HChainstay length 43.3cm 43.3cm 43.3cm 43.3cm 43.3cm
IOffset 4.4cm 4.4cm 4.4cm 4.4cm 4.4cm
JTrail 8.4cm 8.4cm 8.4cm 8.4cm 8.4cm
KWheelbase 110.1cm 113.7cm 115.5cm 117.0cm 119.4cm
LStandover 74.0cm 73.0cm 73.0cm 74.0cm 74.2cm
MFrame reach 37.4cm 41.5cm 43.2cm 44.9cm 46.9cm
Assumed fork sag 10% 10% 10% 10% 10%
NFrame stack 56.0cm 65.5cm 57.4cm 58.3cm 60.2cm
Assumed shock sag 25% 25% 25% 25% 25%
  15.5" 17.5" 18.5" 19.5" 21.5"
Actual Frame Size 15.5" 16.5" 17.5" 18.5" 20.5"
ASeat tube 14.49" 16.50" 17.52" 18.50" 20.51"
BSeat tube angle 73.0 ° 73.0 ° 73.0 ° 73.0 ° 73.0 °
CHead tube length 3.74" 3.94" 4.33" 4.72" 5.51"
DHead angle 68.0 ° 68.0 ° 68.0 ° 68.0 ° 68.0 °
EEffective top tube 21.85" 23.15" 23.94" 24.68" 25.71"
FBottom bracket height 13.11" 13.11" 13.11" 13.11" 13.11"
GBottom bracket drop .67" .67" .67" .67" .67"
HChainstay length 17.05" 17.05" 17.05" 17.05" 17.05"
IOffset 1.73" 1.73" 1.73" 1.73" 1.73"
JTrail 3.31" 3.31" 3.31" 3.31" 3.31"
KWheelbase 43.35" 44.76" 45.47" 46.06" 47.01"
LStandover 29.13" 28.74" 28.74" 29.13" 29.21"
MFrame reach 14.72" 16.34" 17.01" 17.68" 18.46"
Assumed fork sag 10% 10% 10% 10% 10%
NFrame stack 22.05" 25.79" 22.60" 22.95" 23.70"
Assumed shock sag 25% 25% 25% 25% 25%