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GFB’s 5711 foam filter is designed to protect atmosphere-venting BOVs that operate in dirty environments. Manufactured in Australia by Uni Filter for GFB, the 5711 features a foam filter element with internal steel reinforcement to keep the dirt, sand, mud, and other debris out of your BOV!
The large filter area is specifically sized to ensure minimum restriction to the blow off valve operation. Don’t underestimate how much air a BOV dumps in a very short amount of time – the small 25mm breather filters that other brands use significantly strangle the flow capacity of the BOV.
Supplied with a stainless steel clamp, the 5711 filter can be installed onto any 38mm/1.5” BOV outlet, including our 5703 trumpet and 5238 recirc outlet.

5711 filter and 5703 trumpet shown fitted to SXV
Eurosport Performance does not have live inventory. Although we aim shipping out not stocked products within 5 business days, supply constraints, import proceedures and product availability can cause additionnal delays. Please refer to the table below for more accurate details.
In stock - We have the item in stock at our warehouse and you can expect fulfillment within 24 hours.
Usually ships within 5-7 business days - We must import this product from our supplier or the manufacturer. Standard import proceedures take between 5-7 business days and you can expect fulfillment within 8 business days.
Back ordered - This product is out of stock at our warehouse with units in transit from our supplier. Fulfillment can vary.
If you wish to have a more accurate ETA, please send us a message at info@es-performance.com and we will respond within 24-48h.
12 Months
All products sold by Eurosport Performance are warrantied against manufacturing defects according to the manufacturer's warranty policy*. Warranty does not cover abuse, misuse, damages caused from improper manipulation, normal wear and tear, improper installation, or damages resulting from racing. Warranties only apply to the original owner. If a product is found defective, the customer will receive, at the discretion of Eurosport Performance, a replacement part at no extra cost. Eurosport Performance is not responsible for fitment inaccuracies regardings products sold outside of the United States or Canada. Please confirm compatibility prior to placing an order or contact us for more information.
* Conditions may apply. Please visit our Refund Policy or contact us at info@es-performance.com

