Piaggio Group Americas is recalling 1,328 model year 2019 Vespa GTV 300, GTS 300, and model year 2020 Vespa GTS 300 HPE scooters.
The brake lines may have been improperly galvanized, allowing hydrogen to be released into the brake fluid.
Hydrogen in the braking system can reduce the brake lever's ability to activate the brakes, increasing the risk of a crash.
What to do
Piaggio will notify owners, and dealers will install front and rear master cylinder brake flush fittings, and perform a complete brake system flush free of charge.
The recall began November 27, 2019, and owner letters will be mailed through January 17, 2020.
Owners may contact Piaggio customer service at (212) 380-4433. Piaggio's number for this recall is PP2ZZQ1904_GTS.