Biltwell Bonanza - Sea Weed
Biltwell Bonanza - Sea Weed
Biltwell Bonanza - Sea Weed
Biltwell Bonanza - Sea Weed
Biltwell Bonanza - Sea Weed
Biltwell Bonanza - Sea Weed

Biltwell Bonanza - Sea Weed

Regular price $145.75
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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

  • Injection-molded ABS outer shell is rugged yet lightweight—the best combination of features for a motorcycle helmet
  • Expanded Polystyrene (EPS) safety liner dissipates impact loads without compromising comfort
  • Snaps on brow accept all Biltwell and select other brand bubble shields, visors and optical accessories
  • Removable/replaceable comfort liner and cheek pads feature brushed fleece Lycra touch points to absorb and evaporate perspiration
  • Chin strap features brushed fleece Lycra touch points for comfort and an adjustable strap end retainer
  • Complies to US DOT safety standards

Size chart

Bonanza Helmet - Sea Weed

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

7 – 8⅛

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