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Sidi Rex Air Black Motorcycle Boots

Sidi Rex Air Black Motorcycle Boots

The King is dead, long live the King!

The Sidi Rex is the successor of the Vortice racing boot. With a new and improved closure system, large ankle support and air vents, the Sidi Rex is the ultimate racing boot. And it should be, as it's the direct result of "on the track" testing in MotoGP!

Material Microfiber
Waterproof membrane None
Ventilation Air scoops, Perforated areas
Protection Ankle, Shin
Boot Series Rex

Regular Price: 552.45



Select your boot size




The King of racing boot used to be the Sidi Vortice. But to every era comes an end. Enter: the Sidi Rex. These new hardcore racing boots will give you everything you need if you're the type of rider who likes to beat the stopwatch, whether it's on the track or on your daily route to the office. The Rex was developed through research, laboratory tests and "on the track" testing thanks to Sidi's MotoGP riders' input. The Vortice has always been an exceptional boot, but the Rex takes it to the next level.

The Rex sports the new and improved closure system. The Tecno-3 Push rotors allow for easy adjustability with less hassle compared to the Vortice. The steel cables are now firmly attached to the boots and no longer rely on magnets to secure a good fit. The push button allows the rotating buckle to be lifted for an easy grip.. The whole system makes sure the shin and ankle mechanisms are closed symmetrically for a perfect, snug fit. The large ankle support brace joins the internal and external ankle joint for more support. In the outer lower part, you will find an effective air vent. On the calfs there's a large exhaust vent and on the toes you will find another intake vent. Sweaty feet are a thing of the past.

The Sidi Rex comes in multiple colors and in both non-vented and vented (AIR) versions.

Special features

  • Protection:Nylon and Fiberglass protective parts
  • Protection: Large ankle support brace for more support
  • Ventilation: Vents at the toes, calf and side of the foot
  • Ventilation: Perforated upper for maximum ventilation
  • Extra Information: New and improved closure system
Additional Information

Additional Information

Brand Sidi
Boot Series Rex
Ventilation Air scoops, Perforated areas
Material Microfiber
Waterproof membrane None
Season Summer
Protection Ankle, Shin
Main Color Black
Sub Colors Black
Riding Style Race/Sport
Boot Type Racing boot
Gender Men
Size Chart


Sidi boots run smaller than most brands. If you're in between sizes or not sure about the size, we recommend to go one size up from your regular size.

EU 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
US Men 3-3.5 4-4.5 5-5.5 5.5-6 6.5-7 7-7.5 8-8.5 9-9.5 9.5-10 10.5-11 11-11.5 12-12.5 13-13.5 14 15
US Women 4.5-5 5.5-6 6.5-7 7-7.5 8-8.5 8.5-9 9.5-10 10.5-11 11-11.5 12-12.5 12.5-13