The 2007 Honda GL1800 has 5 recalls, the most serious involving the airbag inflator, which can rupture and send metal fragments into the rider, with a risk of serious injury or death.
The airbag issue is especially relevant for motorcycles originally sold or registered in high-humidity states and territories including Hawaii, Florida, Texas, California, and several Gulf Coast states, as prolonged exposure to heat and moisture degrades the inflator's propellant over time, causing it to fire with far greater force than designed. This is the same class of inflator problem that has driven large-scale recalls across the automotive industry, and on a motorcycle the rider sits in direct line with the airbag.
The remaining two recalls both involve the rear brake system. The combined braking system's secondary master cylinder can cause the rear brake to drag even after the rider releases the brake lever or pedal. A dragging rear brake creates unexpected resistance that raises the risk of losing control, and if the condition continues long enough during a ride, the heat buildup can be enough to ignite a fire at the rear brake. Prior recall attempts did not fully resolve the issue, which is why separate campaigns were filed covering overlapping model year ranges.