Alpinestars SMX-6 V3 Boots - Black/Silver/Red
US 6.5 / EU 40
$349.95
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Color: Black/Silver/Red
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
- Packed with a host of innovative safety and protective features, SMX-6 V3 is the ultimate track and performance riding all-rounder, and incorporates race-derived technology and materials to give riders a crucial performance edge on the track, and the street
- Advanced microfiber upper construction for lightweight high performance protection against abrasion and superb levels of flexibility
- Front flex and back flexion zones are constructed with textile over-injected with a soft Thermoplastic Polyurethane (TPU) for enhanced impact abrasion while also promoting a natural forwards and backwards movement
- Alpinestars unique ankle brace protection system provides a bio-mechanical support and protection between the lateral top calf, the shin and ankle, for superior ankle articulation, while also limiting hyper-torsion, hyper-extension and hyper-flexion, as well as providing Achilles and ankle impact protection
- Alpinestars Lace-Lock System is constructed from an advanced polymer resin for a guaranteed quick, precise and secure closure
- Equipped with a TPU shifter zone for superior protection on the lower medial side
- Strategically positioned, race-derived TPU shin plate protector delivers superior impact and abrasion resistance
- Dual density TPU ankle protectors are strategically positioned between the upper and padded lining to provide the strategic protection in key areas
- Replaceable, dual density TPU toe slider with screw-in assembly provides comprehensive protective coverage around the outer toe area while still being supremely flexible for walking comfort
- Replaceable heel slider and external side heel slider are strategically positioned for optimum shock dissipation and absorption, while promoting sliding in the event of an accident
| Brand | ALPINESTARS |
|---|---|
| Category | Footwear |
| Size | US 6.5 / EU 40, US 7.5 / EU 41, US 9 / EU 43, US 11.5 / EU 46, US 8 / EU 42, US 10.5 / EU 45, US 12 / EU 47, US 12.5 / EU 48, US 9.5 / EU 44 |
| Country of origin | Vietnam |
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 | 3404-1823 | 8059347396286 | 4.8 lb |
| US 7.5 / EU 41 | 3404-1824 | 8059347396293 | 5.3 lb |
| US 9 / EU 43 | 3404-1826 | 8059347391120 | 5.3 lb |
| US 11.5 / EU 46 | 3404-1829 | 8059347396330 | 6.0 lb |
| US 8 / EU 42 | 3404-1825 | 8059347396309 | 5.35 lb |
| US 10.5 / EU 45 | 3404-1828 | 8059347396323 | 5.9 lb |
| US 12 / EU 47 | 3404-1830 | 8059347396347 | 6.4 lb |
| US 12.5 / EU 48 | 3404-1831 | 8059347396354 | 6.35 lb |
| US 9.5 / EU 44 | 3404-1827 | 8059347396316 | 5.75 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.