Arai DDL4 Duct
  • Arai DDL4 Duct - Smoke
  • Arai DDL4 Duct - Diamond Black
  • Arai DDL4 Duct - Diamond White
  • Arai DDL4 Duct

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Pearl Black
Diamond Black
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$15.55 - $19.95
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Arai DDL4 Duct Set

Replacement top rear vent for the Arai RX-Q and Signet-Q Helmets. Comes with double sided mounting tape already installed.

Product Style RevZilla Item # Manufacturer Product # Availability
Pearl Black 609769 5002 Out of Stock
Smoke 609811 5000 Only 1 Left: Ships within 24 hours
White 609768 5001 Out of Stock
Diamond Black 609771 5004 Only 2 Left: Ships within 24 hours
Diamond White 609770 5003 Only 2 Left: Ships within 24 hours


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If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

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Have a functionality, fit, or otherwise product-specific question about the Arai DDL4 Duct? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

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Browse 2 questions Browse 2 questions and 3 answers
Why did you choose this?
RevZilla Store
my dog bitted it... :(
cleartalk - a on Apr 19, 2017
my dog bitted it... :(
cleartalk - a on Apr 19, 2017
Repair item
Paris R on Apr 20, 2016
Repair item
Paris R on Apr 20, 2016
Will this fit defiant helmets?
A shopper on Apr 25, 2016
BEST ANSWER: I don't think so. On the Arai web site your helmet uses ACR-4 REAR DUCT. Go to the Arai site and plug in your specific helmet to verify. Make sure you get the right one and it will be easy to install.