MT Helmets · Thunder 4 SV
MT Helmets Thunder 4 SV
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.
Designed for oval to intermediate head shapes; features a multi-position dial and adjustable cheek pads for a secure fit.
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 tarmac with the MT Helmets Thunder 4 SV, where aggressive styling meets uncompromising safety engineering. Designed for the modern rider who demands both protection and performance, this full-face helmet features a sleek, aerodynamic shell that slices through the wind to minimize drag and fatigue on long hauls. The interior is crafted from premium, moisture-wicking materials that ensure all-day comfort, while the advanced MIPS-compatible liner provides superior impact resistance. With its bold graphics and seamless integration of ventilation channels, the Thunder 4 SV isn't just a helmet; it's your ultimate co-pilot, delivering a quiet, cool ride whether you are carving corners at speed or cruising open highways in style.
Rider Profile & Intended Use
Where to buy
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Amazon (US)
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Price History & Trends
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Product Concept & Specifications
MT Helmets (Spain)Engineering & Technical Analysis
The Thunder 4 SV utilizes MT's proprietary aerodynamic shell molding to reduce wind turbulence while integrating a multi-layer EPS liner for optimized energy absorption. Its acoustic profile features a high-density foam core that dampens road noise, creating a cabin-like environment without sacrificing the necessary ventilation flow through its dual-channel intake system.
Fit & Shell Structure
Intermediate Oval Shape
Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.
Safety & Certifications
Acoustics & Aerodynamics
Technology & Convenience
Interactive Size & Fit Finder
Designed for oval to intermediate head shapes; features a multi-position dial and adjustable cheek pads for a secure fit.
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.
Part numbers
| Product style | MFR. product # | SKU | Availability |
|---|---|---|---|
| Gloss Black / | — |
MTH-THUN-BLK | instock |
| Silver Metallic / | — |
MTH-THUN-GRE | instock |
| Gloss White / | — |
MTH-THUN-WHI | instock |
| Operator TC-3 / | — |
MTH-THUN-OPE | instock |
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.