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- S-MX Plus Boot
S-MX Plus Boot
For superior safety and freedom of movement, Alpinestars’ S-MX Plus features an innovative Multi Link Control system and high modulus TPU protection integrated into the sleek profile of the boot. The inner Kevlar® speed lacing closure and micro-adjustable ratchet fastener combine to ensure a comfortable, conforming fit on both the road and track.
$349.95
Style #:
Available Colors
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PU3404-0533$349.95Black36TrueTrueNone44019108
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PU3404-0585$349.95White/Red Vented36TrueTrueNone44071108
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PU3404-0559$349.95Black/Red36TrueTrueNone44045108
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PU3404-0572$349.95White36TrueTrueNone44058108
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PU3404-0546$349.95Black Vented36TrueTrueNone44032108
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PU3404-0663$349.95White/Black/Red/Yellow Vented36TrueTrueNone45943108
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PU3404-0547$349.95Black Vented37TrueTrueNone44033108
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PU3404-0534$349.95Black37TrueTrueNone44020108
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PU3404-0560$349.95Black/Red37TrueTrueNone44046108
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PU3404-0586$349.95White/Red Vented37TrueTrueNone44072108
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PU3404-0664$349.95White/Black/Red/Yellow Vented37TrueTrueNone45944108
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PU3404-0573$349.95White37TrueTrueNone44059108
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PU3404-0548$349.95Black Vented38TrueTrueNone44034108
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PU3404-0665$349.95White/Black/Red/Yellow Vented38TrueTrueNone45945108
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PU3404-0561$349.95Black/Red38TrueTrueNone44047108
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PU3404-0535$349.95Black38TrueTrueNone44021108
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PU3404-0574$349.95White38TrueTrueNone44060108
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PU3404-0587$349.95White/Red Vented38TrueTrueNone44073108
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PU3404-0536$349.95Black39TrueTrueNone44022108
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PU3404-0666$349.95White/Black/Red/Yellow Vented39TrueTrueNone45946108
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PU3404-0562$349.95Black/Red39TrueTrueNone44048108
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PU3404-0549$349.95Black Vented39TrueTrueNone44035108
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PU3404-0588$349.95White/Red Vented39TrueTrueNone44074108
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PU3404-0575$349.95White39TrueTrueNone44061108
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PU3404-0576$349.95White40TrueTrueNone44062108
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PU3404-0667$349.95White/Black/Red/Yellow Vented40FalseFalseNone45947108
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PU3404-0550$349.95Black Vented40TrueTrueNone44036108
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PU3404-0563$349.95Black/Red40FalseFalseNone44049108
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PU3404-0589$349.95White/Red Vented40TrueTrueNone44075108
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PU3404-0537$349.95Black40TrueTrueNone44023108
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PU3404-0577$349.95White41TrueTrueNone44063108
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PU3404-0668$349.95White/Black/Red/Yellow Vented41FalseFalseNone45948108
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PU3404-0590$349.95White/Red Vented41TrueTrueNone44076108
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PU3404-0551$349.95Black Vented41TrueTrueNone44037108
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PU3404-0564$349.95Black/Red41TrueTrueNone44050108
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PU3404-0538$349.95Black41TrueTrueNone44024108
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PU3404-0578$349.95White42TrueTrueNone44064108
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PU3404-0669$349.95White/Black/Red/Yellow Vented42FalseFalseNone45949108
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PU3404-0565$349.95Black/Red42TrueTrueNone44051108
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PU3404-0552$349.95Black Vented42TrueTrueNone44038108
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PU3404-0539$349.95Black42TrueTrueNone44025108
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PU3404-0591$349.95White/Red Vented42TrueTrueNone44077108
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PU3404-0553$349.95Black Vented43TrueTrueNone44039108
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PU3404-0579$349.95White43TrueTrueNone44065108
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PU3404-0566$349.95Black/Red43TrueTrueNone44052108
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PU3404-0540$349.95Black43TrueTrueNone44026108
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PU3404-0670$349.95White/Black/Red/Yellow Vented43TrueTrueNone45950108
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PU3404-0592$349.95White/Red Vented43TrueTrueNone44078108
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PU3404-0541$349.95Black44TrueTrueNone44027108
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PU3404-0671$349.95White/Black/Red/Yellow Vented44TrueTrueNone45951108
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PU3404-0567$349.95Black/Red44TrueTrueNone44053108
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PU3404-0593$349.95White/Red Vented44TrueTrueNone44079108
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PU3404-0554$349.95Black Vented44TrueTrueNone44040108
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PU3404-0580$349.95White44TrueTrueNone44066108
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PU3404-0555$349.95Black Vented45TrueTrueNone44041108
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PU3404-0542$349.95Black45TrueTrueNone44028108
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PU3404-0581$349.95White45TrueTrueNone44067108
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PU3404-0568$349.95Black/Red45TrueTrueNone44054108
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PU3404-0594$349.95White/Red Vented45TrueTrueNone44080108
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PU3404-0672$349.95White/Black/Red/Yellow Vented45TrueTrueNone45952108
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PU3404-0595$349.95White/Red Vented46TrueTrueNone44081108
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PU3404-0569$349.95Black/Red46TrueTrueNone44055108
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PU3404-0556$349.95Black Vented46TrueTrueNone44042108
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PU3404-0543$349.95Black46TrueTrueNone44029108
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PU3404-0673$349.95White/Black/Red/Yellow Vented46TrueTrueNone45953108
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PU3404-0582$349.95White46TrueTrueNone44068108
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PU3404-0674$349.95White/Black/Red/Yellow Vented47TrueTrueNone45954108
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PU3404-0557$349.95Black Vented47TrueTrueNone44043108
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PU3404-0596$349.95White/Red Vented47FalseFalseNone44082108
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PU3404-0583$349.95White47TrueTrueNone44069108
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PU3404-0570$349.95Black/Red47TrueTrueNone44056108
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PU3404-0544$349.95Black47TrueTrueNone44030108
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PU3404-0675$349.95White/Black/Red/Yellow Vented48TrueTrueNone45955108
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PU3404-0545$349.95Black48TrueTrueNone44031108
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PU3404-0584$349.95White48TrueTrueNone44070108
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PU3404-0571$349.95Black/Red48TrueTrueNone44057108
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PU3404-0558$349.95Black Vented48TrueTrueNone44044108
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PU3404-0597$349.95White/Red Vented48TrueTrueNone44083108
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Built for Speed
- High-tech microfiber upper construction is lightweight and extremely durable.
- Forefoot laminated with shock absorbing open cell foam while the ankle area has a highly breathable lining for improved comfort.
- Large front and rear asymmetrical accordion zones are optimized to maximize flexibility for superior comfort and safety.
- Durable sole is designed for improved riding feel and features evenly textured rubber for consistent grip
- The S-MX Plus Boot is CE certified.
Unique Multi Link Control System
- Alpinestars unique Multi Link Control System provides advanced support for the ankle, limiting hyper-torsion, hyper-extension and hyper- flexion as well as providing additional impact protection to the ankle and achilles.
Premium protection
- Contoured shin plate protector is injected with high modulus TPU for superior impact and abrasion resistance.
- Wide, ventilated, heel counter extends to the ankle and is combined with a shock absorbing padded insert and self-molding foam ankle protectors.
- Replaceable heel slider and external side heel slider are positioned to dissipate shock and promote sliding during an accident.
Race inspired details
- Newly designed, replaceable TPU toe slider with snap-in assembly provides more coverage around the toe area.
- Inner Kevlar® speed lacing closure and a unique lateral zipper offer precise and secure fitting.
- Zippered closure mounted on accordion stretch panel features a Velcro tab that locks the zip pull closed, keeping it flat and secure.
- Micro adjustable ratchet buckle closure on the calf lets you finely tune the fit of the boot for maximum security and comfort.
- Alpinestars anatomical and replaceable countered EVA footbed provides arch support and greater feel through the forefoot.

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