Prok Multi-Fit Flame Arrestor

This Proven design has contributed to Five World Championship Titles and Three World Records! Stainless steel free-flowing mesh element - 230.3 cfm* Large clear parabolic cone directs and strengthens air signal to intake, amplifying air volume and velocity. The ultra-light design saves fatigue and vibration on the intake system. 4" Round x 2" Tall..

The rubber base of the PRÖK Multi-Fit Flame Arrestor will slide onto any conventional flame arrestor adapter (2.75"/2.8" diameter) or carburetor/throttle body. The versatility, features, and benefits of the Multi-Fit revolutionized the flame arrestor industry and are the choice of top teams and riders around the world. From the quality of its non-absorbing stainless element to the internal support and large parabolic cone, its performance is cutting edge. Weighing in at only 148g, it is the lightest in the world but its quality and construction put it with our Quick-Fit as the strongest in the world able to hold over 300lbs of weight.

NOTE: If you do not already have them you will also need our flame arrestor adaptors to mount the flame arrestor to the carburetor. We also recommend our flame arrestor prefilters to block water ingestion.

INSTALLATION: Remove the stock flame arrestor airbox. Install appropriate adapters (sold separately) onto stock carburetors. Slide the filter(s) onto the adapters, if snug use some soapy water (Windex) to help seat the filter. Once in place tighten the hose clamp around the arrestor flange with a spade screwdriver or 9/32 (7mm) drive socket.

CARE: Do not spray the flame arrestor with a contact and/or brake-cleaning agent. Washing and caring for your flame arrestor should be done with dishwashing detergent.

WARRANTY INFORMATION: Please contact Prok for missing or if you think you have the wrong flame arrestor on your PWC. If you have a failure or concern regarding the reliability of your Prok flame arrestor please contact Prok immediately at info@prok.com. Prok stands behind all of their products. MARINE SAE J-1928 COAST GUARD APPROVED.

Ships via UPS or USPS Priority.  All "Open Box" items are excluded from our free shipping offer and are not returnable.

International Customers: Shipping charges reflect transportation costs only and do not include international brokerage fees, duties, GST/HST/PST, or other applicable taxes. Customers outside the United States may receive a separate invoice directly from the carrier for these additional charges.

If your order arrives damaged or appears defective, please submit a claim through our Customer Service Order Damage Form. Our team will review your submission and contact you within 24 hours (excluding weekends and holidays). All damage/defect claims must be reported within 48 hours of delivery.

An RMA# (Return Merchandise Authorization Number) is required for all returns.

Returns must be initiated through your Customer Account Portal within 10 days of delivery.

Returned items must be:

• Unused
• Uninstalled
• Unmodified
• Complete with all original packaging, hardware, manuals, and accessories

Returns not related to damage, defect, or an Atlantic Jet Sports shipping error are subject to a 20% restocking fee. Customers are responsible for return shipping costs.

Unauthorized returns will be refused at our shipping dock.

[View Full Return Policy & Return Instructions]

Non‑Returnable Items

The following items are final sale and not eligible for return, exchange, or store credit:

• Seat Covers
• Mat Kits, Mat Sheets
• Chin Pads
• Waterboxes
• Aqua Cart & Factory Zero Transportation/Beach Dollies, Totes, Display Carts, and all related Parts/Accessories
• Watercraft Stands
• Aqua Performance Watercraft Steps
• RRP Handlepoles
• Special Order Items
• Close‑Out Items

Electrical Components (non‑returnable):
Starter Motors, Regulators, Relays, CDI Units, Ignition Coils, Stator Coils, Stator Assemblies, Fuel Injectors.

All warranties are those of the manufacturer and not Atlantic Jet Sports. We will be happy to assist you in filing a warranty claim with the manufacturer, but please remember that the manufacturer determines whether a claim is approved or denied. Any modification to a product voids your warranty. All claims for consequential, physical, incidental, or special damage are hereby excluded.

Performance Product Use & Compliance Notice

Atlantic Jet Sports supplies high‑performance components engineered solely for closed‑course racing and sanctioned competition. These parts are not designed, tested, certified, or warranted for use on public waterways or on watercraft equipped with emissions‑controlled systems.

Installing or using these components may change the watercraft’s safety characteristics, emissions compliance, or legal classification. Using competition‑only products on public waterways may violate federal, state, or local regulations.

By purchasing, installing, or operating a watercraft equipped with these components, the user acknowledges and accepts full responsibility for all associated risks—including, but not limited to, personal injury, property damage, mechanical failure, or legal consequences. The user further agrees that Atlantic Jet Sports assumes no liability for damages arising from improper installation, misuse, or operation outside of competition environments.

For best performance and safety, Atlantic Jet Sports strongly recommends installation by a qualified technician experienced with high‑performance Personal Watercraft systems.

Product Installation Disclaimer

⚠️ Warning — Professional Installation Required

• Ensure the hull is fully ventilated and free of fuel vapors before using electric or battery‑powered tools. Failure to do so may result in fire, explosion, serious injury, or death.
• Disconnect the battery before performing any installation or maintenance to prevent accidental ignition, electrical shock, or unintended engine engagement.
• Allow the engine, exhaust, and surrounding components to cool completely before beginning work.
• No smoking, open flames, or spark‑producing devices should be present during installation.

This product is not intended for use on watercraft equipped with pollution‑control systems. Modifying or removing emissions‑related components may violate state or local laws and may render the watercraft illegal for use outside of competition.