In two categories, the fastest production motorcycles in America now say "Made in Alabama."

Birmingham-based Motus Motorcycles shattered records in two categories during this week's Bonneville Motorcycle Speed Trials at Utah's Bonneville Salt Flats.

Motus President Lee Conn recorded a speed of 154.767 mph Monday in the 1650cc production pushrod class, eclipsing the American Motorcyclist Association record of 127.571 mph, set by a Harley-Davidson in 2010. Conn went back the next day and broke his own record with a speed of 165.813 mph.

Motus Design Director Brian Case challenged the record in the production gas category Tuesday, with his speed of 163.982 mph besting the previous record of 132.334 mph, set in 2008 by a Harley-Davidson.

Those records are pending certification by the AMA.

"Motus makes the fastest motorcycles in America," Conn said in an email to AL.com.

To set the records, the bikes had to make two runs on the three-mile course -- down and back -- within two hours. They were timed between the first and second mile marker.

The motorcycles are production bikes, meaning the only modifications between the showroom and the salt flats is that the lights are taped up and the mirrors are taken off. The only thing keeping the bikes, the company's MSTR bikes, from dealerships is the EPA certification of their emissions testing, Conn said.

Conn and Case left Utah Thursday, and they're riding those record-setting bikes back to Alabama.