Some people prefer the winds of freedom to hit them squarely in the face. If that's your style, Bonanza's your helmet. US DOT-certified for safety. Lightweight and generously padded for comfort.
Technical Details
No two helmet models from different manufacturers will fit identically on the same wearer's head. For this reason, please refer to our sizing chart and follow our fitment instructions carefully before merely ordering a new helmet in the same size as the one you're currently wearing.
Size | Head measurement | US Hat size |
---|---|---|
XS | 20⅞ – 21⅜ | 6⅝ – 6⅞ |
S | 21½ – 22 | 6⅞ – 7⅛ |
M | 22⅛ – 22⅝ | 7⅛ – 7⅜ |
L | 22¾ – 23¼ | 7⅜ – 7⅝ |
XL | 23⅜ – 23⅞ | 7⅝ – 7⅞ |
XXL | 24 – 24½ | 7⅞ – 8⅛ |
Size | Head measurement | US Hat size |
---|---|---|
XS | 53 - 54.25 | 6⅝ – 6⅞ |
S | 54.5 - 55.75 | 6⅞ – 7⅛ |
M | 56 - 57.25 | 7⅛ – 7⅜ |
L | 57.5 - 58.75 | 7⅜ – 7⅝ |
XL | 59 - 60.25 | 7⅝ – 7⅞ |
XXL | 60.5 - 61.75 | 7⅞ – 8⅛ |
In order to best determine fit, we advise comparing our helmet’s measurements to a similar helmets you already own. When taking your head measurement, measure the largest circumference, usually found at your your temple.
For any sizing, styling, or general inquiries, please contact us.
We’ve got a no hassle approach to exchanges and even cover shipping both ways in the USA. Dig in to the details for all returns and exchanges here.
Our checkout is verified and secured with bank level encryption so you never have to worry about your money.
Spend over $100 in our online store and your order ships for free within the USA. Orders placed before 2:00PM PST generally go out the same day so you get your stuff fast.
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This is my second bonanza helmet from Biltwell and I couldn’t be happier. It looks great and is very comfortable. Plus, it was shipped super fast. Thanks again guys for another awesome product. It won’t be my last purchase with y’all
This is my 2nd Bonanza helmet. They fit really well, comfortably snug, but not too tight. Fit and finish is top notch. I also tried the Bell, but couldn't find a size that fit me comfortably.
As always, Biltwell delivered a great helmet. Very comfortable, light weight, and impeccable styling
Flawless as always, thanks for fantastic gear!
Great helmet. New favorite