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Alpinestars SM5 Solid Helmet, Lightweight Protection for MX Riders

  • Based on 15 reviews
Condition: New
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$299.95 Why this price?
Holiday Deal · 28% off was $419.00

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Availability: 12 left in stock
Fulfilled by Rocky Mountain ATV/MC

Arrives Dec 8 – Dec 9
Order within 14 hours and 24 minutes
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Color: Black


Size: Medium


Features

  • Cotton/polyester blend
  • Imported
  • Lightweight outer shell is constructed from a technologically advanced impact resistant thermoplastic in two sizes
  • Designed to direct air into the ports for enhanced airflow
  • Hydration tube channels are integrated into the helmets cheek pads for convenience and performance
  • The inner and outer surfaces are engineered to minimize the effects of oblique impacts
  • Side shell couple with soft EPS foam prevents damage to collarbone in the event of a crash

Description

The SM5 helmet has been designed to provide MX riders with a helmet that is safe and purposefully designed to deliver optimal protection and comfort. The lightweight SM5 helmet features a thermo-injected shell incorporating a special polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact protection and light weight, while the five density EPS liner ensures the correct density in the correct area for enhanced impact absorption.

Brand: Alpinestars


Color: Black


Age Range (Description): Adult


Size: Medium


Special Feature: Lightweight, Ventilation, Visor


Brand: ‎Alpinestars


Color: ‎Black


Age Range (Description): ‎Adult


Size: ‎Medium


Special Feature: ‎Lightweight, Ventilation, Visor


Model Name: ‎Alpinestars 8303123-110-m S-m5 Solid Helmet Black Matt Md


Outer Material: ‎Thermoplastic Alloy


Recommended Uses For Product: ‎Motorcycling


Item dimensions L x W x H: ‎18 x 14 x 12 inches


Athlete: ‎Motorcycling


Inner Material: ‎Expanded Polystyrene


Style: ‎Racing


Item Package Dimensions L x W x H: ‎16.8 x 12.8 x 10.8 inches


Package Weight: ‎2.2 Kilograms


Item Dimensions LxWxH: ‎18 x 14 x 12 inches


Brand Name: ‎Alpinestars


Warranty Description: ‎30 Days for Returns


Material: ‎Thermoplastic


Suggested Users: ‎mens


Number of Items: ‎1


Manufacturer: ‎Alpinestars


Part Number: ‎8303123-110-M


Included Components: ‎Alpinestars 8303123-110-M S-M5 Solid Helmet Black Matt Md


Sport Type: ‎Motocross


Date First Available: August 1, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 8 – Dec 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Very good helmet
Color: Black Size: Large
Great purchase
Reviewed in the United States on May 18, 2025 by Brae smith

  • Comfortable and great price
Color: White Size: Large
This was a major upgrade for me having used a fly helmet before. I upgraded my riding gear and wanted a matching helmet so I gave this a shot and it was better than I ever expected. I would 100% recommend this helmet
Reviewed in the United States on October 18, 2024 by ALH

  • Helmet was nice but sent back
Color: Bright Red/Blue Size: Large
The helmet itself was perfect but these run on the bigger side I wear large in fox for a tight fit but this in large was way to loose I could turn side to side while I my head and to much movement up and down be aware of the size running bigger than normal
Reviewed in the United States on July 25, 2024 by Sheldon Walters

  • Beautiful
Color: Bright Red/Blue Size: Large
the material is excellent
Reviewed in the United States on March 23, 2024 by Marcos Marcos

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