Sidi ST Motorcycle Boots Black 102 – Multi-Purpose Sport Boot
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Size chart Sidi Motorcycle Boots

To determine the correct shoe size: please measure the length of the foot in cm, from the heel to the big toe, as shown in the image.

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Returns must be registered in advance by email and are possible in line with our cancellation policy (14-day return request + 14-day return window after approval). Please note: unregistered returns are not accepted. You'll find all details on conditions, exceptions and refunds in our cancellation policy.
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Built to do it all, the Sidi ST motorcycle boots in black are a genuine multi-purpose sport boot that adapts to whatever the day throws at you — the commute, the canyon or the weekend tour. Drawing on more than 60 years of Sidi bootmaking, the ST packs every feature a road boot should have, including dedicated ankle and heel protection, in a slim, easy-wearing package made for everyday use.
Key Features
- Secure micrometric buckle closure with a zip elastic panel for a fast, precise fit that stays put on the move
- External protectors on the toe, heel, side and calf shield the most exposed areas from impact and abrasion
- Slim, smooth “designed to slide” profile engineered to move safely, without snagging, in a crash
- Full-length ankle support braces and a shock-absorbing heel cup add stability without fatiguing the leg
- Air Ventilation System keeps the foot cool on warm rides
- Replaceable buckle, shin plate and slider extend the boot's service life
Designed to Slide
Sidi built the ST slim, smooth and light so that, in the event of a slide, the boot moves cleanly without catching or obstruction — protecting the foot and ankle when it matters most. Side braces support the entire length of the boot for a planted, structured feel, while the sleek inner keeps you close to the bike for precise feedback and firm control of the machine.
Everyday Protection and Comfort
External protectors across the toe, heel, side and calf guard the most vulnerable areas, while the shock-absorbing heel cup cushions and stabilises the heel. Ankle support braces resist twisting and hold the ankle securely, and the durable high-grade microfibre upper is engineered to shrug off years of daily use. A road-riding sole delivers long-lasting comfort and confident grip on the peg and at the stop.
Buckle Closure and Zip Elastic Panel
A micrometric buckle lets you dial in a precise, repeatable fit, while the zip elastic panel makes the ST genuinely easy to get on and off — and keeps the fit firm and secure once you are riding. Every key wear point, from the buckle to the shin plate and slider, is replaceable, so the boot keeps performing season after season.
Fit and Sizing
The Sidi ST is offered in a regular fit across EU sizes 37–50. If you ride in thicker socks or sit between sizes, we recommend sizing up. Consult the Sidi size chart before ordering to confirm the best fit.
Specifications
| Brand | Sidi |
| Model | ST |
| Model number | 102 |
| Colour | Black |
| Type | Sport/street multi-purpose boot |
| Upper material | Durable high-grade microfibre |
| Ventilation | Air Ventilation System |
| Protection | External protectors (toe, heel, side, calf), shock-absorbing heel cup, ankle support braces |
| Closure system | Micrometric buckle with zip elastic panel |
| Sole | Road riding sole |
| Replaceable components | Buckle, shin plate, slider |
| Fit | Regular |
| Intended use | Everyday road, sport and street riding |
| Available sizes | 37–50 |
| Brand | Sidi |
|---|---|
| Model | ST |
| Model number | 102 |
| Colour | Black |
| Upper material | Durable high-grade microfibre |
| Protection | External protectors (toe, heel, side, calf), shock-absorbing heel cup, ankle support braces |
| Closure system | Micrometric buckle + zip elastic panel |
| Replaceable components | Buckle, shin plate, slider |
| Available sizes | 37–50 |
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// Sidi
Sidi ST Motorcycle Boots Black 102 – Multi-Purpose Sport Boot

Tech specs
- Brand
- Sidi
- Model
- ST
- Model number
- 102
- Colour
- Black
- Upper material
- Durable high-grade microfibre
- Protection
- External protectors (toe, heel, side, calf), shock-absorbing heel cup, ankle support braces
- Closure system
- Micrometric buckle + zip elastic panel
- Replaceable components
- Buckle, shin plate, slider
- Available sizes
- 37–50
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
Frequently asked questions
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