Sidi Rex Air Motorcycle Boots Black/Bronze 191
Sidi Rex Air Motorcycle Boots Black/Bronze 191
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To determine the correct shoe size: please measure the length of the foot in cm; starting from the heel to the big toe, as shown in the image.

Sidi Rex Air Motorcycle Boots Black/Bronze 191 – maximum ventilation, maximum protection
If you're looking for a racing boot that provides cool comfort even during intense summer rides, then the Sidi Rex Air Motorcycle Boots Black/Bronze 191 is exactly your model. This high-performance boot combines extreme breathability, uncompromising safety, and a custom racing fit, usually reserved for professional riders.
Breathability at Racing Level
The fully perforated upper material ensures constant air circulation – perfect for hot track days, long tours, and sporty rides. The integrated Air Ventilation System keeps your feet dry, cool, and ready to react.
Protection that Instills Confidence
The Rex Air was designed to optimally protect you even in extreme conditions:
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High-density TPU-Protectors for maximum impact absorption
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External fiberglass exoskeleton for controlled stability
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Asymmetrical heel and ankle reinforcement
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Replaceable shin plate & slider
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Side profile with slip control for secure footing
This safety concept comes directly from the professional realm – worn by Sidi factory riders.
Fit that Feels Tailored
With the patented dual-dial closure system, the boot can be adjusted with millimeter precision – regardless of shin shape or calf circumference.
➡ The boots fit perfectly and always provide stable support.
Comfort & Control on Every Ride
Thanks to the highly abrasion-resistant microfiber material and the stable-flexible construction, the Rex Air is suitable for both aggressive racing maneuvers and long tours.
You benefit from:
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precise feedback
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high freedom of movement
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secure footing and optimal power transfer
Sustainability Included
Sidi focuses on environmentally conscious production and supports the UN Sustainable Development Goals. In addition, the company pursues ambitious CO₂ reduction targets.
Product Highlights
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Color: Black/Bronze
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Model Number: 191
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Perforated upper material for maximum ventilation
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High-Density Dial closure system
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TPU-Protectors & fiberglass-reinforced structure
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Replaceable sliders & shin guards
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Racing-level safety & comfort
Conclusion: For those who won't compromise
The Sidi Rex Air motorcycle boots Black/Bronze 191 combine premium protection, racing performance, and extreme breathability – ideal for demanding sport riders who want to get the most out of every ride.
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About Us
About Us
Our passion for quality and innovation drives us to offer you the best products and services for motorcycle enthusiasts. From exclusive high-performance parts to tailor-made solutions — your riding experience is at the center of everything we do.
Shipping & Returns
Shipping & Returns
We ship with DHL and FedEx — if requested, also via express. If an item is in stock, shipping via express can, in many cases, be delivered within 1 business day. Standard delivery time is typically about 2–5 business days within the country, and worldwide usually about 1 week. Please check the available shipping options and transit times in the cart, as we offer several shipping providers depending on the country.
Returns must be registered in advance by email and are possible according to our return policy (14 days to request a return + 14 days return shipping deadline after approval). Please note: Unregistered returns will not be accepted. You can find all details on the terms, exceptions, and refunds in our return policy.
Your payment information is processed securely. We do not store any credit card details and we have no access to your credit card information.
More information in our FAQs
Write to our team via email – we’ll get back to you as quickly as possible.
How long does it take to process my order?
How long does it take to process my order?
If the item is in stock, we usually process your order very quickly; in many cases it can even be shipped the same day.
Our processing times are Monday to Friday, 07:30–16:30.
Do you ship internationally?
Do you ship internationally?
Yes, we ship worldwide. Shipping is carried out depending on the country and the selection, via DHL or FedEx.
What is your return policy?
What is your return policy?
Returns must be registered in advance by email. You can request a return within 14 days of receiving the item and, after approval, you have another 14 days to send it back.
Important: Unregistered returns are not accepted. All details can be found in our cancellation policy.
What does “delivery time on request” mean?
What does “delivery time on request” mean?
“Delivery time on request” means the item is generally not in stock right away and may need to be ordered separately. Please contact us before purchase – we’ll check availability and tell you the estimated delivery time.
Do you offer express shipping?
Do you offer express shipping?
Yes, we offer express shipping. If an item is in stock, in many cases shipping can be completed within 1 business day (depending on the country and shipping option). You can see the available shipping methods in the shopping cart.

