Description
The SIDI ST Boots are high-performance street and track motorcycle boots designed to sit right below SIDI’s top-tier Rex series. Priced around $379.99 USD / £319.99 GBP, these boots are engineered for aggressive street riders and regular track-day enthusiasts who demand premium protection without the completely unyielding stiffness of a pure racing boot.
They are constructed from Technomicro synthetic microfiber leather, which makes them lighter and more abrasion-resistant than standard leather, and they carry a high-level CE certification.
Key Features & Protection
• Hinged External Ankle Bracing: A rigid structure that allows smooth front-to-back flexing for shifting and braking while preventing dangerous lateral twisting.
• Clamshell Entry System: Features a unique entry design utilizing a side zipper paired with a rear hinge panel and dual motocross-style ST10 Cam-Lock buckles. This allows you to widely open the calf area, step in easily, and clamp it shut for a highly customized fit over different calf sizes or leathers.
• Highly Serviceable Parts: Nearly all high-wear and impact-prone components are entirely replaceable via screws, including the shin deflector plates, toe sliders, cam-lock straps, and the shock-absorbing polyurethane heel cup.
• ST vs. ST Air: The standard ST features manual, closeable side vents for versatile weather usage. The ST Air variant adds extensive chassis perforations throughout the microfiber upper, maximizing airflow for hot-climate riding.
Sizing, Fit, & Community Perspectives
The SIDI ST boots feature a notoriously narrow and European-style footbed profile. Reviewers and expert retailers strongly advise that if you are in between sizes, you should round up to the nearest size to ensure comfort. Due to the stiff, reinforced composite inner shank, breaking them in over a couple of weeks is required so the materials can properly mold to your foot shape and riding position
