Alpinestars SMX Plus Boots — Black/White/Red Fluorescent — US 9.5 / EU 44 · 44

• Advanced microfiber upper construction for lightweight high performance protection and superb levels of flexibility
• Front flex area is constructed with a soft microfiber for improving abrasion resistance and natural forwards and backwards movement
• Flexible accordion microfiber on Achilles gives enhanced natural movement
• Outside entry/exit has stretchable accordion panel for a close fit and ease of entry and removal
• An evolution of Alpinestars unique Multi-Link Control system provides advanced external protection and support for ankle articulation, limiting hyper-torsion, hyper-extension and hyper-flexion as well as providing Achilles and ankle impact protection
• Dual density Thermoplastic Polyurethane (TPU) replaceable toe slider with screw-in assembly providing protective coverage around the outer toe area
• Replaceable heel slider and external side heel slider are positioned to dissipate and absorb shock and promote sliding during an accident
• Large front and rear asymmetrical accordion zones are optimized to maximize flexibility for maximum comfort and improved safety
• Micro adjustable ratchet top closure stows tab end
• Advanced synthetic forefoot lining, laminated with open cell foam for shock absorption and highly breathable lining in ankle and leg areas for comfort
• Alpinestars anatomical and replaceable countered EVA footbed provides arch support and forefoot pedal feeling
• Durable sole, designed for improved riding feel, features evenly textured rubber for consistent grip
• Inner instep speed lacing closure and unique lateral zipper offer precise and secure fit
• Alpinestars Lace-Lock System is constructed from an advanced polymer resin to provide a quick, precise and secure closure
• Hook and loop tap locks the zip pull close, keeping in flat and safe
• Contoured high modulus shin plate protector gives superior impact and abrasion resistance

Color/Finish

White, Fluorescent Red, Black

Features

Hook and Loop

Material

Microfiber, Thermoplastic Polyurethane (TPU)

Base Color

Black

Fit

Mid-Calf

Units

Pair

Type

Racing, Performance

Model

SMX Plus

Riding Style

Street

Size Group

Adult

US Size

9.5

Shipping weight

6 lb

Package size

18 × 13.8 × 5 in

Country of origin

Thailand

Salto part #

3404-1473

Alpinestars part #

2221019-1231-44

UPC

8033637962184

In stock. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is checked again before your card is charged.

Is it in stock?

Yes — it’s in stock right now. We check again the moment you order, before anything is charged.

How fast will it get to me?

Usually 2–4 business days by ground.

Will it fit my machine?

There’s no published vehicle fitment list for this part. Call the counter at 801-361-3010 with your year, make and model and we’ll check it with you before you order.

Is this genuine Alpinestars?

Yes. It’s new and genuine, straight from Salto — Alpinestars part #2221019-1231-44.