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We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

Sizing & fit

The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.

 

Rider Height

Inseam

All measurements provided in cm unless otherwise noted.

Frame size number Frame size letter Geometry position A — Seat tube B — Seat tube angle Effective seat tube angle C — Head tube length D — Head angle E — Effective top tube F — Bottom bracket height G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack
15.5 S High 39.4 68.5° 74.7° 9.5 66.1° 56.0 35.6 9.4 43.3 4.6 11.2 113.9 73.9 40.1 58.3
15.5 S Low 39.4 67.9° 74.2° 9.5 65.5° 56.2 34.9 1.6 43.5 4.6 11.5 114.0 73.4 39.5 58.7
17.5 M High 41.9 68.5° 74.7° 10.0 66.1° 58.6 35.6 9.4 43.3 4.6 11.2 116.6 77.1 42.6 58.8
17.5 M Low 41.9 68.0° 74.2° 10.0 65.6° 58.8 34.9 1.6 43.5 4.6 11.5 116.7 76.6 42.0 59.2
18.5 ML High 44.5 68.5° 74.7° 10.5 66.1° 60.3 35.6 9.4 43.3 4.6 11.2 118.3 77.3 44.1 59.2
18.5 ML Low 44.5 68.0° 74.2° 10.5 65.6° 60.4 34.9 1.6 43.5 4.6 11.5 118.4 76.8 43.5 59.6
19.5 L High 47.0 68.5° 74.7° 11.0 66.1° 62.4 35.6 9.4 43.3 4.6 11.2 120.5 77.0 46.1 59.7
19.5 L Low 47.0 68.0° 74.2° 11.0 65.6° 62.5 34.9 1.6 43.5 4.6 11.5 120.6 76.5 45.5 60.1
21.5 XL High 52.1 68.5° 74.7° 12.5 66.1° 64.8 35.6 9.4 43.3 4.6 11.2 123.1 77.5 48.1 61.0
21.5 XL Low 52.1 68.0° 74.2° 12.5 65.6° 64.9 34.9 1.6 43.5 4.6 11.5 123.2 76.9 47.5 61.5

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