BikeGeoLab
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Specialized Crux (2020–2021) – geometry

A
Specialized · Gravel · 700cManufacturer data · as of Oct 25, 2026Source
Cockpit: 20 mm spacers · 100 mm stem · -6° (stock)
Saddle: same saddle height · 0 mm setback · centred (default)
Fixpoint
388
Reach: Horizontal distance from the bottom bracket to the top of the head tube. More reach = more stretched-out position. · grid 10 cm
MeasureCrux (2020–2021) 56
Frame
Stackmm582
Reachmm388
Stack / Reach1.50
Head angle°72.0°
Seat angle°73.3°
Head tubemm155
Seat tubemm550
Top tube (effective)mm563
Chainstaymm425
Rear centre (horizontal)mm419
Wheelbasemm1026
Front centremm611
BB dropmm69
BB heightmm284
Fork offsetmm50
Trailmm62
Fork axle-to-crownmm400
Cockpit & riding position
Bar reachmm473
Bar stackmm641
Saddle – barmm681
Saddle-to-bar dropmm49

italic = calculated · tap a row to pin the measure in the drawing · Δ relative to Crux (2020–2021)

Geometry table Specialized Crux (2020–2021)

Gravel · 700c · Sizes 46–61.0 · Stack 523–618 mm · Reach 366–402 mm · Head angle 69.5–73.0°

Measure464952545656.05858.06161.0
Stackmm523540554566582582597597618618
Reachmm366369375382388388395395402402
Stack / Reach1.431.461.481.481.501.501.511.511.541.54
Head angle°69.5°70.5°71.5°71.5°72.0°72.0°72.5°72.5°73.0°73.0°
Seat angle°75.5°75.5°74.0°73.5°73.3°73.3°73.0°73.0°72.5°72.5°
Head tubemm100115125140155155170170190190
Seat tubemm470490510530550550570570600600
Top tube (effective)mm501509534550563563578578597597
Chainstaymm425425425425425425425425425425
Rear centre (horizontal)mm419419419419419419420420420420
Wheelbasemm1007100710081020102610261034103410431043
Front centremm592592593605611611618618627627
BB dropmm71717169696967676767
BB heightmm282282282284284284286286286286
Fork offsetmm50505050505050505050
Trailmm78726565626259595555
Fork axle-to-crownmm400400400400400400400400400400

italic = calculated from the other values · Source: Geometry table Specialized, as of Oct 25, 2026

Size finder · transfer your fit

Transfer your riding position to a new bike

Enter your well-fitting bike with saddle height, seatpost and cockpit. For every size of the new bike we calculate the stem, spacers, saddle height, setback and saddle position that reproduce the same contact points. This is a geometric approximation without guarantee and does not replace a professional bike fit.

1

Your bike – how you sit today

Saddle

Cockpit

Saddle
208 mm behind · 689 mm above BB
Handlebar
473 mm ahead · 641 mm above BB
Saddle–bar
681 mm · drop 49 mm

Saddle height: bottom bracket centre to top of saddle along the seat-tube axis. Saddle fore/aft: + forward, − back. Spacers incl. top cap, handlebar centre = stem clamp.

2

New bike – what do I need to set up?

Choose the bike you want to transfer your position to. We calculate every size.

Explore

All frame sizes at a glance

All frame sizes by stack and reach or any other measure – click a dot or line to add the bike to the comparison.

1040 of 1040 sizes · 159 models
350400450500550450500550600650700Reach (mm)Stack (mm)A

Each dot is a frame size. Coloured dots with a letter = current comparison.

Similar to Crux (2020–2021) 56

Similarity over the axes of the geometry profile below; stack and reach count 1.5×. The best-matching size per model, filters are respected.

Geometry profile

Each line is a frame size across all selected measures. Drag on an axis to filter a range – this also affects the chart and the similarity list.

Stackmm500600Drag to filter Stack · click to remove the filterReachmm350400450500Drag to filter Reach · click to remove the filterHead angle°65.0°70.0°Drag to filter Head angle · click to remove the filterSeat angle°72.0°74.0°76.0°78.0°Drag to filter Seat angle · click to remove the filterWheelbasemm10001200Drag to filter Wheelbase · click to remove the filterChainstaymm420440Drag to filter Chainstay · click to remove the filterBB heightmm300350Drag to filter BB height · click to remove the filterTrailmm50100150Drag to filter Trail · click to remove the filter

Drag on an axis to filter a range · click a line to compare the bike

BikeGeoLab

Making bike geometry visible – with verified manufacturer data, model year and source.

Geometry data comes from the manufacturers' geometry tables, each linked with source and retrieval date. No guarantee for correctness – data may be wrong or outdated, calculated values and the size finder are approximations and do not replace a professional bike fit. Brand and model names belong to their respective owners; there is no affiliation with the manufacturers.

Add a bike

Paste a geometry table

Select the table on the manufacturer's page, copy it and paste it here. Sizes as columns or rows, German or English; values like “435/432” for flip chips are recognised.

Sizes (mm / degrees · * required · setting e.g. “High”, “Low”, “Mullet”)

Size*SettingStack*Reach*Head ∠ °*Seat ∠ °*Head tube*Chainstay*BB drop*BB drop rearSeat tubeTop tubeWheelbaseFork offsetAxle-to-crownBB heightFront ctr.TrailStemSpacers