On certain motorcycles, the rear brake reservoir cap screws may not have been tightened properly. As a result, the screws could loosen and cause brake fluid to leak from the rear brake master cylinder reservoir. This could cause reduced braking.
Reduced braking can cause extended stopping distances and increase the risk of a crash.
Suzuki will notify owners by mail and advise you to take your motorcycle to a dealership to tighten the rear brake reservoir cap screws.