SKU: 26662421905

Alpinestars - S-M3 Solid Helmet

Sale price$159.30 Regular price$177.00
Save 10%

Pay in installments of $44.25 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Alpinestars - S-M3 Solid HelmetAlpinestars S M3 Solid Helmet The S M3 Solid Helmet is built for riders who want a modern off road helmet with serious protection and a clean, aggressive look. Description: Engineered for MX, Enduro, and off road riding, the SM3 Helmet integrates advanced technologies and innovations designed to enhance ease of use, comfort, and impact protection. Features: Advanced Shell Construction: This helmet features a thermo injected shell incorporating a

Alpinestars - S-M3 Solid Helmet

The S-M3 Solid Helmet is built for riders who want a modern off-road helmet with serious protection and a clean, aggressive look.

Description: Engineered for MX, Enduro, and off-road riding, the SM3 Helmet integrates advanced technologies and innovations designed to enhance ease of use, comfort, and impact protection. Features: Advanced Shell Construction: This 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 lightweight.

Why We Like It

We like this helmet because it feels secure without being overly heavy, and the venting actually works when you’re charging hard.

Why It’ll Work for You

If you’re after a helmet that can handle moto days, off-road loops, and everything in between, this one gives you dependable protection and comfort.

Variants / Options

Available in multiple shell sizes and graphics so you can get a confident fit and a look that matches your style.

Key Features

  • Advanced Shell Construction: This 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 lightweight. The SM3 medium weighs 1430g (ECE) and 1460g (DOT).
  • Ventilation: Maximized ventilation and high levels of heat transfer exchange thanks to 10 inlets and seven exhaust ports.
  • Rotational Acceleration Force Protection: Alpinestars patented low-friction coating is applied to the inner part of the main EPS liner to reduce the rotational acceleration forces that can result from certain oblique impacts. This layer essentially acts as a slip plane to mimic the brain’s own low-friction cerebrospinal fluid, which is the body’s natural defense against oblique impacts.
  • Visor Release: Patented visor release system ensures the visor is released with the correct pre-determined amount of force, effectively reducing the forces on the rider’s neck during an impact.
  • The inner and outer surfaces are engineered to minimize the effects of oblique impacts.
  • 5 EPS inner parts with 4 densities to effectively manage volume and impact perfromance.
  • Hydration tube channels are integrated into the helmet’s cheek pads for convenience and performance.
  • Comfort liner is constructed using recycled materials for a lower carbon footprint.
  • The fit can be tailored to the rider’s head thanks to the helmet’s crown and cheek pads, which are available as genuine spare parts in different thicknesses.
  • Alpinestars has introduced a new in-house standard for the SM3 helmet to test the helmet’s chin to conditions heavier than the homologation standard, and in order to pass the Alpinestars’ new standards, the shell thickness and the structure of the helmet design itself have both been optimized on the chin area for superior impact performance.
  • The inner and outer surfaces are engineered to minimize the effects of oblique impacts.
  • Equipped with an EUPDATEncy Release System and removable cheek pads to permit the safe and easy removal of the cheek pads while the helmet is still on, while the 3D contoured foam ensures rider comfort.
  • Soft textile chin strap is 25mm for optimal safety and rider comfort.
  • Stainless steel D-rings ensure a tight and secure fit.
  • The SM3 helmet conforms to both DOT certification and ECE 2206 homologation for use worldwide.

Shop More Alpinestars Gear

Build out the setup with Alpinestars helmets, goggles, gloves, and rider protection. For replacement timing and care tips, see our helmet, boot, and gear replacement guide.



Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 26662421905

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.5 ★★★★★
Based on 5 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Cynncat
Omaha, US
★★★★★ 4
Easy to put together
Size: 16 x 18 Inch
Great legs and look great with the table, however, the legs connect to a peak and is not level. A friend made me some spacers on his 3d printer so I could use them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 8, 2025
S
Verified Purchase
sara hunter
Whiting, US
★★★★★ 5
Easy to put together and sturdy.
Size: 16 x 18 Inch
Perfect base for my diy coffee table. Easy to use and exactly what I needed
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 5, 2026
L
Verified Purchase
LDS
West Palm Beach, US
★★★★★ 3
It high quality but usable.
Size: 16 x 18 Inch, Size: 16 x 18 Inch
Kind of poor quality. The 4 way connectors do not set level to each other and the 3/16” Allen screws strip out very easily. I wouldn’t buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
D
Verified Purchase
Debra M
Charlottesville, US
★★★★★ 5
Metal table legs
Size: 28 x 24 Inch
Table legs are very sturdy for our two inch thick, round cut, epoxy slab. Great accent table.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
E
Verified Purchase
Elaine tracey
Louisville, US
★★★★★ 5
Superb
Size: 16 x 18 Inch
They were very struggling, made it easy to put together.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026

recommand products