Roadmachine (2026–2027) vs. Allez (2020–2022)

A

BMC · Road · 700cManufacturer data · as of Oct 25, 2026Source

Cockpit: 20 mm spacers · 100 mm stem · -6° (stock)

SpacersStemAngle °

Saddle: same saddle height · 0 mm setback · centred (default)

Saddle heightSetbackForward (+)/back

B

Specialized · Road · 700cManufacturer data · as of Oct 25, 2026Source

Cockpit: 20 mm spacers · 100 mm stem · -6° (stock)

SpacersStemAngle °

Saddle: same saddle height · 0 mm setback · centred (default)

Saddle heightSetbackForward (+)/back

Reach: Horizontal distance from the bottom bracket to the top of the head tube. More reach = more stretched-out position. · grid 10 cm

Allez (2020–2022) 54 vs. Roadmachine (2026–2027) 54: 0.8° steeper head angle · 1.0° slacker seat angle

Measure	Roadmachine (2026–2027) 54	Allez (2020–2022) 54
Frame
Stackmm	570	570±0
Reachmm	383	380−3
Stack / Reach	1.49	1.50+0.01
Head angle°	72.2°	73.0°+0.8°
Seat angle°	74.2°	73.3°−1.0°
Head tubemm	154	155+1
Seat tubemm	488	510+22
Top tube (effective)mm	546	552+6
Chainstaymm	422	420−2
Rear centre (horizontal)mm	415	413−2
Wheelbasemm	997	991−6
Front centremm	594	585−9
BB dropmm	75	76+1
BB heightmm	268	264−4
Fork offsetmm	45	47+2
Trailmm	63	55−8
Fork axle-to-crownmm	379	368−11
Cockpit & riding position
Bar reachmm	469	466−2
Bar stackmm	629	627−1
Saddle – barmm	665	674+9
Saddle-to-bar dropmm	64	62−2

italic = calculated · tap a row to pin the measure in the drawing · Δ relative to Roadmachine (2026–2027)

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

mmmmmm

Cockpit

mmmm°

Saddle: 196 mm behind · 693 mm above BB
Handlebar: 469 mm ahead · 629 mm above BB
Saddle–bar: 665 mm · drop 64 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

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

Similar to Roadmachine (2026–2027) 54

only Road

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.

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

Add a bike

BrandModelModel year *CategoryWheel (front)Wheel rearTyre clearance, max. (mm)Source (manufacturer page with geometry table) *

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*	Setting	Stack*	Reach*	Head ∠ °*	Seat ∠ °*	Head tube*	Chainstay*	BB drop*	BB drop rear	Seat tube	Top tube	Wheelbase	Fork offset	Axle-to-crown	BB height	Front ctr.	Trail	Stem	Spacers