Biltwell · Bonanza · Biltwell Bonanza
Biltwell Bonanza Anthracite
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 open-face fit; may feel tight on larger head sizes due to internal EPS liner density.
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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Embodying the golden age of American motorcycle culture, the Biltwell Bonanza Anthracite is a tribute to the vintage Cafe Racer aesthetic. This open-face helmet delivers an authentic look with its distinctive 'batwing' visor and minimalist chin bar, perfectly complementing retro-modern builds. Crafted from durable, lightweight materials, it offers reliable protection without compromising on style or comfort. The anthracite finish provides a sophisticated, matte elegance that stands out in any lineup. Whether cruising through city streets or exploring backroads, the Bonanza ensures you ride with confidence and character. Its open design promotes superior airflow and an unobstructed field of vision, making it the ideal choice for riders who value tradition and performance.
Rider Profile & Intended Use
Where to buy
Price History & Trends
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Product Concept & Specifications
Biltwell (United States)Engineering & Technical Analysis
The Biltwell Bonanza utilizes a classic open-face shell design optimized for reduced aerodynamic drag while maintaining structural integrity through high-impact polycarbonate construction. Its internal geometry features an intermediate oval shape with a low-profile crown, ensuring a secure fit without excessive pressure points on the temples or occiput.
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 open-face fit; may feel tight on larger head sizes due to internal EPS liner density.
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.