Alpinestars · SM5 · SM5
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.
The 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 Intermediate Oval 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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SM5 Racer TC-2 is a high-performance Dirt/MX helmet engineered by Alpinestars to meet high standards of safety and comfort. Inspect its detailed design background and specifications below.
Key Highlights:
Rider Profile & Intended Use
Where to buy
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Amazon (US)
USD 338.95 View Deal →
Price History & Trends
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Product Concept & Specifications
Alpinestars (Italy)Engineering & Technical Analysis
Multi-density EPS air channels direct airflow across the crown. Double-lipped shield gaskets maintain cabin sound levels around 98 dB at 100 km/h.
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
The 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 Intermediate Oval 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
View on retailers
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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.