Alpinestars SMX-S Boots - Black
US 6.5 / EU 40
$319.95
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- Durable microfiber upper construction offering superb levels of flexibility and comfort
- TPU shin plate protector is ergonomically optimized for superior impact and abrasion resistance
- Shift pad made from TPU incorporates technical texturing for protection and grip
- Compound rubber sole promotes improved feel and grip, water dispersion and durability.
Color: Black
In stock — dispatched in 1–2 business days
Estimated delivery
Ways to pay
- Shop Pay Installments — 4 interest-free payments on orders $50–$999.99, or pay monthly.
- Afterpay — 4 interest-free payments, generally over six weeks.
Also credit and debit cards, PayPal, Cash App Pay, Apple Pay and Google Pay. Choose how to pay at checkout.
Installments are subject to approval.
- FreeUS shipping on this item
- 90-dayreturns, no restocking fee
- GenuineAlpinestars, authorized dealer
Not sure about your size?
Check the size guide below, or send us the size you usually wear and a specialist at the dealership helps you pick the right one. No charge, no obligation.
See the size guide ↓
Ask a specialist →
Need help?
Not sure which size to order? Call the parts counter at Riders Miami Motorsports and we help you pick.
Tap to call · +1 645-239-3174Product details
- Durable microfiber upper construction offering superb levels of flexibility and comfort
- Incorporating a waterproof and breathable membrane for high levels of comfort and weather performance
- TPU shin plate protector is ergonomically optimized for superior impact and abrasion resistance
- Lateral TPR-injected ankle support construction offers optimized levels of protection and stability
- TPU double density ankles protectors are layered under the upper in both lateral and medial side for excellent all-round levels of protection
- Integrated, replaceable bi-injected TPU slider features new easy no-screw fixing concept for quicker and easier replacement
- Shift pad made from TPU incorporates technical texturing for protection and grip
- Medial side entry opening/closure system features elastic-mounted zipper with wide velcro-closure for flexibility and secure fit. The aperture opening is large to promote easier entry/exit
- Internal toe box protection is layered under the upper for durability, improved feel and performance
- Dual compound removable anatomic foot bed includes EVA and Lycra for performance, comfort and support
- Compound rubber sole promotes improved feel and grip, water dispersion and durability.
| Brand | ALPINESTARS |
|---|---|
| Category | Footwear |
| Size | US 6.5 / EU 40, US 7.5 / EU 41, US 8 / EU 42, US 9 / EU 43, US 9.5 / EU 44, US 10.5 / EU 45, US 13.5 / EU 49, US 5 / EU 38, US 6 / EU 39, US 11.5 / EU 46, US 12 / EU 47, US 12.5 / EU 48, US 14 / EU 50 |
Part numbers by option
Each size is a separate manufacturer part. Pick your size above and we ship that exact part number.
| Size | Part number | UPC | Shipping weight |
|---|---|---|---|
| US 6.5 / EU 40 | 3404-1425 | 8021506619277 | 5.0 lb |
| US 7.5 / EU 41 | 3404-1426 | 8021506619284 | 5.0 lb |
| US 8 / EU 42 | 3404-1427 | 8021506619291 | 5.0 lb |
| US 9 / EU 43 | 3404-1428 | 8021506619307 | 5.0 lb |
| US 9.5 / EU 44 | 3404-1429 | 8021506619314 | 5.0 lb |
| US 10.5 / EU 45 | 3404-1430 | 8021506619321 | 5.0 lb |
| US 13.5 / EU 49 | 3404-1434 | 8021506619369 | 5.0 lb |
| US 5 / EU 38 | 3404-1315 | 8021506618577 | 4.0 lb |
| US 6 / EU 39 | 3404-1316 | 8021506618584 | 4.0 lb |
| US 11.5 / EU 46 | 3404-1431 | 8021506619338 | 5.0 lb |
| US 12 / EU 47 | 3404-1432 | 8021506619345 | 5.0 lb |
| US 12.5 / EU 48 | 3404-1433 | 8021506619352 | 5.0 lb |
| US 14 / EU 50 | 3404-1435 | 8021506619376 | 5.0 lb |
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Free US shipping over $49
$9.95 flat rate under $49, free above it. Most orders dispatch within 1–2 business days and arrive 3–5 business days after that.
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Ships from five US warehouses
Your order leaves whichever warehouse is closest to you, which is what keeps transit times short across the country.
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Wrong size? Exchange or return it
Send it back within 90 days for a different size or a refund. It must be unworn, with all tags and labels. Return shipping is paid by the customer; there is no restocking fee.
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90-day returns, no restocking fees
Return any unused item in its original packaging within 90 days of delivery.
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Authorized dealer, genuine gear
Every item is sourced directly from the manufacturer or their authorized distributor — this one from Alpinestars.
Measure yourself, then compare with Alpinestars's own chart below. Between two sizes? Send us your measurements and a specialist tells you which size to order.
Alpinestars footwear size chart
Size conversion; JP size is your foot length in cm. This model's US and EU sizes match this table. Source: Alpinestars' official footwear size charts (alpinestars.com).
| US | EU | JP / foot length |
|---|---|---|
| 3.5 | 36 | 22.5 cm |
| 4 | 37 | 23 cm |
| 5 | 38 | 24 cm |
| 6 | 39 | 25 cm |
| 6.5 | 40 | 25.5 cm |
| 7.5 | 41 | 26 cm |
| 8 | 42 | 26.5 cm |
| 9 | 43 | 27.5 cm |
| 9.5 | 44 | 28.5 cm |
| 10.5 | 45 | 29.5 cm |
| 11.5 | 46 | 30 cm |
| 12 | 47 | 30.5 cm |
| 12.5 | 48 | 31.5 cm |
| 13.5 | 49 | 32 cm |
| 14 | 50 | 33 cm |
What riders say
Verified Google reviews for Riders Miami Motorsports, our sister store in North Miami Beach
4.63 out of 5 · 641 reviews
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Why buy from Riders Miami
Riders Parts is the parts counter of Riders Miami Motorsports — a full motorcycle dealership in North Miami Beach with a showroom and a service department. Not sure about a size? The team at the parts counter helps you pick one before you order.
Visit the dealership (opens in a new tab)- A real dealership Riders Miami Motorsports: showroom and service department at 1926 NE 154th St, North Miami Beach, FL.
- Ships from 5 US warehouses Dispatched from whichever of our five US warehouses is closest to you, in 1–2 business days.
- Help with sizing Send the size you wear in another brand, or your measurements, and we tell you which size to order.
- Talk to a person +1 645-239-3174 · parts@ridersmiami.com · Mon–Sat 9–7, Sun 10–5.