Alpinestars · SM5 · Alpinestars SM5
Alpinestars SM5 Racer TC-2
Quick Facts at a Glance
Verified Safety Snapshot
How this helmet’s verified certifications map to recognized safety homologations and crash testing.
Safety standards compliance is based on official manufacturer documentation and public safety laboratory test results. Always verify regional compliance labels on the physical helmet prior to use.
Verified Fit & Sizing Guide
Head shape profile matching and interactive size calculator based on verified manufacturer dimensions.
Alpinestars SM5 Racer TC-2 is a motocross/dirt bike helmet designed for off-road racing. It features a carbon fiber composite shell with an EPS liner and a removable chin bar (TC-2). The fit is generally aggressive and low-profile, suitable for riders with standard to slightly narrow head shapes who prefer a tight, secure fit typical of MX helmets.
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Design Concept & Background
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Dominate the track with the Alpinestars SM5 Racer TC-2, a helmet engineered for those who demand uncompromising performance without sacrificing style. This dirt/MX masterpiece combines aggressive aesthetics with cutting-edge safety technology, featuring an integrated MIPS system that mitigates rotational forces during high-speed impacts. The TC-2 certification ensures it meets the rigorous standards of top-tier motocross racing, while its aerodynamic profile slices through the air to reduce drag and wind noise. Inside, a meticulously mapped intermediate oval fit provides a snug, secure hold, allowing you to focus entirely on your lines. With superior ventilation channels that keep you cool during intense heat sessions, this helmet is not just protective gear; it is an extension of your riding precision. Whether you are carving corners in the dirt or pushing limits on the tarmac, the SM5 Racer TC-2 delivers the confidence and clarity needed to race at the highest level.
Key Highlights:
Rider Profile & Intended Use
Where to buy
Price History & Trends
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Product Concept & Specifications
Alpinestars (Italy)Engineering & Technical Analysis
The SM5 Racer TC-2 utilizes Alpinestars' proprietary MIPS technology integrated with a multi-density EPS liner to enhance rotational impact protection while maintaining a low center of gravity. Its aerodynamic shell design, featuring optimized air intakes and exhaust ports, balances high-velocity airflow for cooling with minimal wind turbulence at speed.
Fit & Shell Structure
Intermediate Oval Shape
Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.
Safety & Certifications
Acoustics & Aerodynamics
Technology & Convenience
Regional Legality & Compliance
Certified for use in the United States; meets DOT FMVSS 218 standards.
Compliant with ECE 22.05 regulations for use in European markets.
Accepted for use in Canada under DOT standards.
Regional Legality Guidance
Interactive Size & Fit Finder
Alpinestars SM5 Racer TC-2 is a motocross/dirt bike helmet designed for off-road racing. It features a carbon fiber composite shell with an EPS liner and a removable chin bar (TC-2). The fit is generally aggressive and low-profile, suitable for riders with standard to slightly narrow head shapes who prefer a tight, secure fit typical of MX helmets.
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Available Colors & Graphics
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Data Confidence & Verification Provenance
Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.