303 Marine Fabric Guard – 16oz

When rain stops beading on your motorcycle cover and starts soaking in, the fabric has lost its water repellency. 303 Fabric Guard puts it back. Spray it on clean, dry fabric and it restores water and stain repellency to factory levels, according to 303.

It’s how we’d keep a motorcycle cover waterproof longer, whether that’s a slip-on cover or the cover on your Speedway Shelter.

• Safe for synthetic and natural fibers.
• Protects against water-based and oil-based stains.
• Doesn’t change the fabric’s color, feel, flammability or breathability. Breathable matters on a cover, because trapped moisture underneath is what grows mildew.
• Also good on outdoor leather seats, boat covers and awnings. Made in the USA.

How to get it right: clean the cover first and let it dry all the way. Fabric Guard won’t stick to dirt. 303 suggests its Tonneau Cover & Convertible Top Cleaner or Multi-Surface Cleaner for that step. Try a small hidden spot before you do the whole thing.

For more ways to stretch a cover’s life (UV, airing it out, patching rips early), read our guide on how to make a motorcycle cover last. Fabric Guard also comes in our Cover Care Kit.

Common Questions

How do I make my motorcycle cover waterproof again?
Clean the cover, let it dry all the way, then spray 303 Fabric Guard in even passes. 303 says it restores water and stain repellency on clean, dry fabric to factory levels. Test a hidden spot first.

Will Fabric Guard make my cover stop breathing?
No. 303 says Fabric Guard doesn’t change a fabric’s color, feel, flammability or breathability. That matters on a cover, since moisture trapped underneath is what grows mildew.

What should I clean my cover with before Fabric Guard?
303 suggests its Tonneau Cover & Convertible Top Cleaner or Multi-Surface Cleaner. Fabric Guard needs clean, completely dry fabric to work, so don’t skip the cleaning step.

WARNING: This product can expose you to chemicals including Ethylbenzene which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.