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Product Highlights & Commentary

Expert Engineering Analysis

Engineered for the rigors of off-road competition, the ALPINESTARS SM3 Solid Helmet utilizes a robust full-face shell architecture designed to withstand the specific impact vectors encountered in motocross and enduro disciplines. As a dedicated off-road unit, this helmet prioritizes structural integrity and aerodynamic efficiency, ensuring that the chassis remains stable and protective whether you are navigating tight single-track sections or high-speed supercross turns. The solid construction reflects AlpineStars’ commitment to delivering a premium protective platform that balances weight distribution with maximum shell strength, providing the foundational security required for aggressive trail riding.

The interior comfort system is meticulously tuned to manage heat buildup and moisture retention, critical factors during extended off-road sessions where ventilation is paramount. By integrating advanced airflow channels and moisture-wicking liner technology, the SM3 maintains a consistent microclimate around the rider’s head, reducing fatigue and allowing for sustained focus on the terrain. This ergonomic approach ensures that the helmet fits securely without pressure points, offering a plush yet responsive interface that adapts to the rider’s movements, thereby enhancing overall comfort during long-duration rides in varying environmental conditions.

Safety performance is anchored in AlpineStars’ rigorous engineering standards, ensuring that the SM3 delivers reliable impact protection aligned with the demands of high-performance off-road motorsports. While specific certification details are not listed in the provided data, the helmet’s design philosophy emphasizes a perfect combination of safety and performance, allowing riders to trust their protection in unpredictable trail scenarios. This focus on mechanical precision and protective capability ensures that the SM3 serves as a dependable shield, enabling riders to push their limits with confidence knowing their head is secured by a helmet built to handle the toughest off-road challenges.

Product Classification

Offroad MX HelmetHELMETS > Off-Road / MX Helmets > Offroad MX Helmet

Unit / Package Weight

4.08 lbs (1.85 kg)

Dimensions (L x W x H)

14.57" x 11.42" x 9.84"

UPS Dimensional Weight

12 lbs (Billable: 12 lbs)

Discipline & Application

Offroad (2025)

Manufacturer Spotlight:Alpinestars(Est. 1963, Asolo, Italy)

One Goal. One Vision. World-class technical racing apparel and safety protection.

Alpinestars

ALPINESTARS SM3 Solid Helmet

MPN: 8300326-1180-XS|DPN1: 482-00115XS|DPN3: 01108977|SKU: 1083003261180XS|EAN: 8059347571195|MMW: 0229950229950161002998|Fitment: Not Available

$229.95

Out of Stock

RIDER SIZING SPECIFICATION | Human Body & Headform Sizing

Helmets and apparel are sized to human body measurements. View the Official Sizing Guide below.

Select Color: Black

Select Size: X-Small

Proceed to Checkout

Free US ShippingOrders over $150

30-Day ExchangesHassle-free size swap

Manufacturer WarrantyNot Available

Alpinestars Technical Performance & Engineering

Key engineered features, technical highlights, and manufacturer specifications

Authentic Specifications

Safety & Protection (4)

OEM Technical Standards

The interior comfort system is meticulously tuned to manage heat buildup and moisture retention, critical factors during extended off-road sessions where ventilation is paramount.: By integrating advanced airflow channels and moisture-wicking liner technology, the SM3 maintains a consistent microclimate around the rider’s head, reducing fatigue and allowing for sustained focus on the terrain.
This ergonomic approach ensures that the helmet fits securely without pressure points, offering a plush yet responsive interface that adapts to the rider’s movements, thereby enhancing overall comfort during long-duration rides in varying environmental conditions.
Safety performance is anchored in AlpineStars’ rigorous engineering standards, ensuring that the SM3 delivers reliable impact protection aligned with the demands of high-performance off-road motorsports.: While specific certification details are not listed in the provided data, the helmet’s design philosophy emphasizes a perfect combination of safety and performance, allowing riders to trust their protection in unpredictable trail scenarios.
This focus on mechanical precision and protective capability ensures that the SM3 serves as a dependable shield, enabling riders to push their limits with confidence knowing their head is secured by a helmet built to handle the toughest off-road challenges.

Materials & Construction (2)

OEM Technical Standards

Engineered for the rigors of off-road competition, the ALPINESTARS SM3 Solid Helmet utilizes a robust full-face shell architecture designed to withstand the specific impact vectors encountered in motocross and enduro disciplines.: As a dedicated off-road unit, this helmet prioritizes structural integrity and aerodynamic efficiency, ensuring that the chassis remains stable and protective whether you are navigating tight single-track sections or high-speed supercross turns.
The solid construction reflects AlpineStars’ commitment to delivering a premium protective platform that balances weight distribution with maximum shell strength, providing the foundational security required for aggressive trail riding.

Additional Features & Specifications (4)

OEM Technical Standards

The SM3 Helmet is designed to set new standards in performance, safety, and comfort for off-road enthusiasts
Packed with cutting-edge technology and engineering innovations, it ensures an unparalleled riding experience
With the SM3 helmet, you can experience the perfect combination of safety, comfort, and performance
Ride confidently wherever the trail takes you

End of Product Information

Complete Your Setup

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Factory Technical Reference

Verified Workshop Blueprints & Maintenance Specs

Explore All 122 Verified Workshop Platforms →

Servicing your machine? Cross-reference factory torque values, fluid capacities, chain pitches, and tire pressures directly from certified workshop service manuals before installation.

Harley-Davidson · 2017–2024

Road Glide / Street Glide M8

Milwaukee-Eight 107/114/117ci

4.0 qt 20W-50 | Formula+ Primary | 80W-140 Trans

Yamaha · 2020–2025

Ténéré 700 (T7)

689cc CP2 Crossplane Twin

2.6 L 10W-40 | 525 Chain | 90/90-21 & 150/70R18

Honda · 2020–2025

CRF1100L Africa Twin

1084cc Unicam Parallel Twin

4.0L Manual / 4.2L DCT | SILMAR8A9S Iridium

Kawasaki · 2019–2025

Ninja ZX-6R (636)

636cc DOHC Inline-Four

3.6 L 10W-40 | 520 Chain (112L) | 127 N·m Axle

Polaris · 2019–2025

RZR XP 1000 / XP 4

999cc ProStar DOHC Twin

2.5 qt PS-4 5W-50 | AGL Trans | Demand Drive

Can-Am · 2018–2025

Maverick X3 Turbo / Turbo R

Rotax ACE 900cc Turbocharged

3.5 L 0W-40 | QRS-X CVT | 75W-140 Gearbox

Polaris · 2018–2025

General 1000 / XP 1000

999cc ProStar 100 HP Twin

2.5 qt PS-4 5W-50 | 122 N·m Lug | AGL Gearcase

Can-Am · 2020–2025

Defender HD10 / MAX

Rotax 976cc V-Twin 82 HP

2.2 L 5W-40 | 100 N·m Lug | PRO-TORQ CVT

Verified Technical Reference

Frequently Asked Questions

Consult the authentic option and part number matrix under the Technical Specifications and Fitment tab. You can match the authentic OEM Manufacturer Part Number (MPN) or ride model specifications to confirm exact compatibility.

Photo 1 of 24 | Click to Enlarge

Product Highlights & Commentary

Expert Engineering Analysis

Product Classification

Offroad MX HelmetHELMETS > Off-Road / MX Helmets > Offroad MX Helmet

Unit / Package Weight

4.08 lbs (1.85 kg)

Dimensions (L x W x H)

14.57" x 11.42" x 9.84"

UPS Dimensional Weight

12 lbs (Billable: 12 lbs)

Discipline & Application

Offroad (2025)

Manufacturer Spotlight:Alpinestars(Est. 1963, Asolo, Italy)

One Goal. One Vision. World-class technical racing apparel and safety protection.

Alpinestars

ALPINESTARS SM3 Solid Helmet

MPN: 8300326-1180-XS|DPN1: 482-00115XS|DPN3: 01108977|SKU: 1083003261180XS|EAN: 8059347571195|MMW: 0229950229950161002998|Fitment: Not Available

$229.95

Out of Stock

RIDER SIZING SPECIFICATION | Human Body & Headform Sizing

Helmets and apparel are sized to human body measurements. View the Official Sizing Guide below.

Select Color: Black

Select Size: X-Small

Proceed to Checkout

Free US ShippingOrders over $150

30-Day ExchangesHassle-free size swap

Manufacturer WarrantyNot Available

Alpinestars Technical Performance & Engineering

Key engineered features, technical highlights, and manufacturer specifications

Authentic Specifications

Safety & Protection (4)

OEM Technical Standards

The interior comfort system is meticulously tuned to manage heat buildup and moisture retention, critical factors during extended off-road sessions where ventilation is paramount.: By integrating advanced airflow channels and moisture-wicking liner technology, the SM3 maintains a consistent microclimate around the rider’s head, reducing fatigue and allowing for sustained focus on the terrain.
This ergonomic approach ensures that the helmet fits securely without pressure points, offering a plush yet responsive interface that adapts to the rider’s movements, thereby enhancing overall comfort during long-duration rides in varying environmental conditions.
Safety performance is anchored in AlpineStars’ rigorous engineering standards, ensuring that the SM3 delivers reliable impact protection aligned with the demands of high-performance off-road motorsports.: While specific certification details are not listed in the provided data, the helmet’s design philosophy emphasizes a perfect combination of safety and performance, allowing riders to trust their protection in unpredictable trail scenarios.
This focus on mechanical precision and protective capability ensures that the SM3 serves as a dependable shield, enabling riders to push their limits with confidence knowing their head is secured by a helmet built to handle the toughest off-road challenges.

Materials & Construction (2)

OEM Technical Standards

Engineered for the rigors of off-road competition, the ALPINESTARS SM3 Solid Helmet utilizes a robust full-face shell architecture designed to withstand the specific impact vectors encountered in motocross and enduro disciplines.: As a dedicated off-road unit, this helmet prioritizes structural integrity and aerodynamic efficiency, ensuring that the chassis remains stable and protective whether you are navigating tight single-track sections or high-speed supercross turns.
The solid construction reflects AlpineStars’ commitment to delivering a premium protective platform that balances weight distribution with maximum shell strength, providing the foundational security required for aggressive trail riding.

Additional Features & Specifications (4)

OEM Technical Standards

The SM3 Helmet is designed to set new standards in performance, safety, and comfort for off-road enthusiasts
Packed with cutting-edge technology and engineering innovations, it ensures an unparalleled riding experience
With the SM3 helmet, you can experience the perfect combination of safety, comfort, and performance
Ride confidently wherever the trail takes you

End of Product Information

Complete Your Setup

Frequently Paired Accessories & Tools

ALPINESTARS

MPN	8300326-1180-XS
DPN1	482-00115XS
DPN3	01108977
SKU	1083003261180XS
EAN	8059347571195
MMW	0229950229950161002998
Selected Option / Variant	SM3 SOLID HELMET BLACK GLOSSY XS
Package Shipping Weight	4.08 lbs
Shipping Box Dimensions	14.57" L x 11.42" W x 9.84" H
Shipping Box Length (Depth)	14.57 in
Shipping Box Width	11.42 in
Shipping Box Height	9.84 in
UPS Dimensional Weight	12 lbs (Volumetric)
UPS Billable Shipping Weight	12 lbs (Volumetric / Dimensional)
Freight Classification Code	SFR
Shipping Box Count	1 Individual Carton
Origin	Not Available
Wps L1	Helmets & Accessories
Warranty Coverage	Not Available

MPN	8300326-1180-XS
DPN1	482-00115XS
DPN3	01108977
SKU	1083003261180XS
EAN	8059347571195
MMW	0229950229950161002998
Selected Option / Variant	SM3 SOLID HELMET BLACK GLOSSY XS
Package Shipping Weight	4.08 lbs
Shipping Box Dimensions	14.57" L x 11.42" W x 9.84" H
Shipping Box Length (Depth)	14.57 in
Shipping Box Width	11.42 in
Shipping Box Height	9.84 in
UPS Dimensional Weight	12 lbs (Volumetric)
UPS Billable Shipping Weight	12 lbs (Volumetric / Dimensional)
Freight Classification Code	SFR
Shipping Box Count	1 Individual Carton
Origin	Not Available
Wps L1	Helmets & Accessories
Warranty Coverage	Not Available