CPSC says the reported hazard is:
"The rear shock absorber allows the aluminum, dual-suspension frame to flex severely, causing the frame to become unstable and break, posing the risk of injury to riders."
Pacific Cycle Inc. has received two reports of the frames on these bicycles breaking, resulting in abrasions and bruises to the riders.
The bikes recalled have the number R1590WMET written on the service sticker, located on the bottom bracket tube near the pedals.
The bikes were manufactured in China.
The recall does not apply to any Mongoose bikes supplied in Europe.