Alpinestars SMX-S Motorcycle Boot
With a durable microfiber upper for comfort and fit and incorporating a host of advanced protective features, inside and out, the SMX-S Boot features an ergonomic forefoot shaping, a breathable lining and Alpinestar's exclusive rubber compound sole for optimized levels of support and performance.
CONSTRUCTION
- Durable, high-tech micro-fiber upper construction offering a high level of flexibility.
- Double injected PU shields the shin, ankle, calf, toe and heel from impact while minimizing abrasion.
- Inner protection is given by a double injected panel connected to the heel counter, hidden beneath the outer shell and running up the outer ankle.
- Quick drying polyamide lining is laminated with open cell foam and high density contoured padding to absorb shocks to the foot area.
- Exclusive compound rubber sole features structured shank reinforcement for added support to the arch area.
- Interchangeable bi-injected PU toe slider with snap-in assembly.
What we think:
The Alpinestars SMX-S Men’s Motorcycle Boot is a full-height, sport/race-style road boot that delivers track-inspired protection in a package that’s also suitable for spirited street riding. It’s a more affordable sibling to the higher-end Supertech R or SMX Plus, offering great value for weekend warriors, canyon riders, and entry-level track day enthusiasts.
✅ Alpinestars SMX-S – Key Features & Pros:
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CE Certified: Meets CE EN 13634:2017 standard for protective motorcycle boots.
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Construction:
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Durable synthetic microfiber upper – abrasion resistant, lightweight, and more flexible than traditional leather.
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Large accordion stretch panels at front and back = excellent flexibility and shift comfort.
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Protection:
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TPU shin plate, heel counter, and external ankle brace for side-impact resistance.
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Replaceable TPU toe sliders – good for sport riders and light track day use.
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Internal toe box and shift reinforcement.
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Comfort & Fit:
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Breathable mesh lining with anti-slip suede reinforcement inside the heel.
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Zipper + Velcro entry system for a secure and snug fit.
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Designed to fit under most sport pants or over leathers.
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Ventilation: Not perforated; airflow is limited — this is more of a 3-season boot unless you get the SMX-S Vented version.
🆚 Comparison with Similar Sport Boots
| Boot | Type | Pros | Cons |
|---|---|---|---|
| Alpinestars SMX-S | Sport/track | Full-height protection, replaceable toe slider, great value (~$260) | Limited airflow (unless vented version), stiff for walking |
| Alpinestars SMX-6 v2 | Mid-premium sport | More ankle mobility, better ventilation, race-proven | Slightly more expensive (~$280–300) |
| Dainese Nexus 2 | Sport | Sleek look, TPU sliders, great airflow | Narrow fit, less calf room |
| TCX RT-Race | Track boot | High protection, durable sole, race ergonomics | Stiffer, less comfy for street use |
| Forma Freccia | Budget sport boot | Decent protection, solid for price | Less refined finish and feel |
| REV’IT! Jerez 3 | High-end track | Premium build, serious protection | High price (~$450), overkill for street only |
🔍 Final Verdict:
Choose the Alpinestars SMX-S if:
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You want a serious full-height protective boot for sport riding or track days
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You’re looking for great protection under $270
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You ride a sportbike or aggressive naked and need impact + slide protection for higher speeds
It may be overbuilt for casual commuting or ADV use, and not ideal for walking long distances — but for twisties, performance riding, and light track work, the SMX-S hits a sweet spot in the Alpinestars line.