Biltwell · Bonanza
Biltwell Bonanza
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 Biltwell Bonanza is an open-face helmet designed with a retro aesthetic. It features a removable chin bar and typically lacks integrated MIPS (rotational mitigation) or built-in speaker pockets found on modern modular helmets. Cable management ports are not standard on this specific model.
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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Redefining the American classic, the Biltwell Bonanza merges vintage motorcycle aesthetics with modern safety engineering for the discerning rider. This open-face helmet features a sculpted fiberglass shell that captures the essence of mid-century design while delivering superior protection and comfort on the open road. With its iconic teardrop shape and customizable interior, it offers a personalized fit that feels as unique as your riding style. The Bonanza is not just headgear; it is a statement piece that commands attention, blending timeless style with essential performance features like effective ventilation channels and robust chin protection. Whether cruising through city streets or exploring scenic backroads, the Bonanza provides an unparalleled experience of freedom and style.
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 proprietary fiberglass-reinforced construction that balances rigidity with impact absorption, featuring a distinctively elongated shell geometry designed to minimize wind buffeting in the open-face configuration. Its internal suspension system offers adjustable retention without compromising the helmet's structural integrity or aesthetic silhouette.
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
The Biltwell Bonanza is an open-face helmet designed with a retro aesthetic. It features a removable chin bar and typically lacks integrated MIPS (rotational mitigation) or built-in speaker pockets found on modern modular helmets. Cable management ports are not standard on this specific model.
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 / | — |
BIL-BONA-BLK | instock |
| Anthracite / | — |
BIL-BONA-GRE | instock |
| Pearl White / | — |
BIL-BONA-WHI | instock |
| Street Grey / | — |
BIL-BONA-STR | instock |
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.