Sidi Rex Air Motorcycle Boots Black/Bronze 191

The Sidi Rex Air in Black/Bronze (model 191) is a race-bred motorcycle boot that carries the unmistakable design language and heritage of Sidi's factory racing programme — finished in a bold black and bronze colourway that sets it apart at the track gate and on the road. Built for riders who demand uncompromising ventilation alongside genuine race-level protection, the Rex Air distils decades of Sidi motorsport expertise into a boot equally at home on summer track days and long-distance sport touring.

Key Features

• Fully perforated upper with integrated Air Ventilation System for continuous airflow, keeping feet cool and responsive in intense heat
• High-density TPU protectors deliver maximum impact absorption at critical impact zones
• External fibreglass exoskeleton provides controlled structural stability without sacrificing feel
• Asymmetric heel and ankle reinforcement derived directly from Sidi's factory rider equipment
• Patented Dual-Dial closure system allows millimetre-precise independent adjustment regardless of shin shape or calf circumference
• Replaceable shin plate and sliders extend the service life of the boot and allow personalised setup
• Side profile with Slip-Control sole for confident footing on the bike and in the paddock

Ventilation Engineered for the Track

Every panel of the Rex Air upper is perforated, working in concert with the integrated Air Ventilation System to sustain constant airflow throughout the boot. Where many sport boots trade breathability for protection, the Rex Air refuses that compromise — making it an exceptional choice for summer track days, aggressive mountain passes, or multi-hour sport touring stints when heat management is critical.

Protection Drawn from the Pro Paddock

The Rex Air's safety architecture is not an approximation of race-boot engineering — it is the real thing, carried forward from the boots worn by Sidi factory riders. High-density TPU protectors absorb and distribute impact energy across the foot and ankle. The external fibreglass exoskeleton maintains structural rigidity under torsional and lateral loads, while the asymmetric heel and ankle reinforcement adds a further layer of targeted defence. Replaceable sliders and a replaceable shin guard mean the boot continues to perform after a slide rather than heading straight to the bin.

A Fit That Works for Every Rider

Sidi's patented Dual-Dial closure brings the precision of a custom fitting to an off-the-shelf boot. Each dial adjusts independently, so riders with narrow shins or larger calves can dial in exactly the hold they need — snug enough for precise lever feel, never restrictive enough to fatigue the leg on a long session. The highly abrasion-resistant microfibre construction wraps the foot in a material that moulds progressively to the rider's foot shape without losing its structural integrity.

Comfort and Control Across Every Riding Scenario

The stable yet flexible construction of the Rex Air makes it a genuinely versatile boot. Aggressive cornering demands precise feedback through the pegs; the Rex Air delivers it. Long motorway transfers demand sustained comfort; the ventilated upper and anatomic last provide it. Riders benefit from accurate feel at the footpegs, a wide range of ankle movement, and the confidence of a secure, well-planted stance at every stop.

Heritage and Responsibility

Sidi supports the UN Sustainable Development Goals through environmentally conscious manufacturing practices and pursues ambitious CO₂ reduction targets — so the performance heritage of the Rex Air comes with a considered approach to the world beyond the racetrack.

Fitment and Compatibility

The Sidi Rex Air motorcycle boots are a universal sport and racing boot suitable for all riders seeking a high-performance ventilated boot. Available in sizes 39 through 48 to accommodate the full range of European foot sizes. Colour: Black/Bronze, model number 191.

Specifications

• Brand: Sidi
• Model: Rex Air
• Model number: 191
• Colour: Black/Bronze
• Upper material: Highly abrasion-resistant perforated microfibre
• Protection: High-density TPU protectors, external fibreglass exoskeleton, asymmetric heel and ankle reinforcement
• Closure system: Patented Dual-Dial
• Replaceable components: Shin plate, sliders
• Ventilation: Integrated Air Ventilation System with fully perforated upper
• Available sizes: 39–48