Sidi Motorcycle Boot Sizing

Sidi boots are labeled in European sizes. Conversion tables differ slightly by retailer and model, so treat any generic EU→US chart as a starting point and confirm on the exact product page before you buy.

What to do

Measure foot length (heel to longest toe) in centimeters or millimeters while standing[1].
Open the size chart on that boot's page (Sidi, RevZilla, MotorcycleGear, etc.). Charts can vary by model (off-road vs street).
If you are between sizes, many riders report Sidi as true to size or slightly roomy in the toe box on adventure/enduro models—but that is rider report, not a brand guarantee. Prefer the product-page chart and return policy.
Check calf circumference on tall adventure boots; some models list a calf measurement separately.

Verified deal example (prices change)

From our product-page-verified feed (scanned 2026-10-15):

Sidi X-Power SC Boots

$199.99 (was $399.99) · MotorcycleGear.com · verified 2026-10-15

In stock sizes: 41, 42, 43, 44, 46, 45, 47, 48, 50. Off-road/enduro boot.

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Measure once. We'll do the chart math.

Save your measurements, match each brand's size, and get alerts when your size drops. Join the waitlist → · Account · All verified deals

Sources

RevZilla: General Motorcycle Apparel Sizing Information (measuring basics; always prefer the chart on the specific Sidi product)
RevZilla motorcycle boots category — open each Sidi product's size chart
Our Gaerne boot sizing guide (same measuring approach)

We do not invent a Sidi EU↔US table here because official conversions are model-specific. Last checked 2026-10-15.