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Specialized Roubaix Size Chart

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Choosing the correct size for a Specialized Roubaix bike is crucial for comfort and performance, and Specialized offers its most expansize size range with the Roubaix. The sizes available range from 44cm to 64cm, depending on the model year, with the 2021 model offering sizes up to 61cm and the 2022 model including a 64cm option​​​​. To find the most suitable size, start with your height. 

As a general rule of thumb rider height correlates well to suggested bike size. For instance, if you are 5 feet 10 inches tall (178 cm), a medium frame size of 54cm is recommended. However, it's important to note that this guide is a starting point, as limb length and torso size can significantly affect the ideal bike size for an individual​​.

Specialized Roubaix Size Chart

SizeHeight (Cm)Height (Inches)
44142 - 1524'8" - 5'0"
49155 - 1635'1" - 5'4"
52163 - 1705'4" - 5'7"
54170 - 1785'7" - 5'10"
56175 - 1805'9" - 5'11"
58180 - 1885'11" - 6'2"
61188 - 1966'2" - 6'5"
64196 - 2056'5" - 6'9"

The frame geometry of the Roubaix, which has remained consistent from 2020 to 2023, should be considered when choosing a bike size. The geometry includes various measurements such as stack, reach, and seat tube length, which are critical for determining how a bike will fit your body. 

While height is a good starting point, these additional dimensions can ensure a bike fits well overall, accounting for individual body proportions. It's also beneficial to get a professional fitting or at least to test ride different sizes if possible, as personal preference and riding style can influence the best size choice​​.

Specialized Roubaix Geometry: 2020 - 2023

Crank Length165mm165mm170mm172.5mm172.5mm175mm175mm175mm
Handlebar Width360mm380mm400mm420mm420mm440mm440mm440mm
Stem Length70mm80mm90mm100mm100mm110mm110mm110mm
Saddle Width155mm155mm155mm143mm143mm143mm143mm143mm
Seatpost Length380mm380mm380mm380mm380mm450mm450mm450mm
Head Tube Length90mm90mm105mm122mm140mm168mm202mm222mm
Head Tube Angle69.3°70.8°71.5°72.3°73°73°73.5°73.5°
BB Height269mm269mm269mm270mm270mm271mm271mm271mm
BB Drop80mm80mm80mm78mm78mm78mm78mm78mm
Fork Length, Full375mm375mm375mm375mm375mm375mm375mm375mm
Fork Rake/Offset52mm52mm52mm47mm47mm47mm47mm47mm
Front Center589mm587mm593mm598mm604mm620mm631mm634mm
Chainstay Length418mm418mm418mm420mm420mm423mm423mm423mm
Top Tube Length, Horizontal503mm523mm534mm550mm569mm584mm600mm618mm
Bike Standover Height686mm719mm747mm766mm787mm809mm847mm865mm
Seat Tube Length365mm410mm446mm465mm485mm505mm545mm581mm
Seat Tube Angle75°74°74°74°73.5°73.5°73.5°73°


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