rpha71 磨砂黑 中号
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Add to compareQuick 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.
Runs slightly snug out of the box but breaks in within 50 miles. Interior designed for glasses-friendly temples.
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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rpha71 磨砂黑 中号 is a high-performance motorcycle helmet engineered by HJC 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
| Marketplace | Price | Availability | Updated | |
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Amazon (US)
Store Profile
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$449.95 | ● In Stock | 1 second ago | Check price → |
Certified HJC Stores in US
Road Rider
Authorized Dealer📍 San Jose, CA
Moto Liberty
Authorized Dealer📍 Dallas, TX
J&P Cycles
Authorized Dealer📍 Anamosa, IA; Orlando, FL
Iron Pony Motorsports
Authorized Dealer📍 Columbus, OH
Helmet House
Authorized Dealer📍 California
Dennis Kirk
Authorized Dealer📍 Rush City, MN
Cycle Gear
Authorized Dealer📍 Multiple locations nationwide
Competition Accessories
Authorized Dealer📍 Tipp City, OH
Price History & Trends
ℹ️ Helmetsan is an independent motorcycle safety & decision engine. When you check prices or purchase via retailer links, Helmetsan may earn an affiliate commission at no additional cost to you.
Product Concept & Specifications
HJC (South Korea)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
Snell and DOT dual certified.
ECE 22.06 homologated.
HJC India officially distributes this model.
Regional Legality Guidance
Interactive Size & Fit Finder
Runs slightly snug out of the box but breaks in within 50 miles. Interior designed for glasses-friendly temples.
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.
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.