MotoNexus Engine
Sidi Rex Air Boots
Sidi
★★★★☆ (Expert Review)

Rex Air Boots

$549 ✓ prime

*Product specifications and price may vary; this is an approximate reference.

Key Features

  • Techno-3 Push closure system
  • Perforated Lorica construction for maximum airflow
  • Ankle support brace
  • Replaceable shin plate

Overview

Sidi Rex Air

The Sidi Rex Air is pure Italian racing technology dedicated to airflow.

The Ventilation King

The “Air” isn’t marketing—the entire upper is perforated Technomicro material. It flows massive amounts of air, keeping feet cool during intense track sessions or hot summer rides.

Techno-3 Push System

Forget zippers and velcro. The Rex uses three steel cable winches:

  1. Shin Tensioner: Secures the top.
  2. Ankle Support: Locks the heel in place.
  3. Instep Adjuster: Customizes the fit over the arch.

This ensures a glove-like fit that doesn’t loosen over time.

Ankle Support Brace

The robust external resin structure limits lateral movement (twisting) while allowing front-to-back flexibility for shifting and braking.

Replaceable Everything

Sidi boots are an investment. Almost every part of the Rex is replaceable:

  • Toe sliders
  • Shin plates
  • Fasteners
  • Heel cups

If you ride hard in hot weather, there is no better boot. The mechanical closure is a masterpiece of engineering.

Specification Detail
Type Boot
Year 2024
Material Technomicro, Nylon, TPU

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