Service Infomation For online assistance for Schwinn, GT or Mongoose please click on the links below to be directed to their respective FAQ and automated response system. You may also e-mail your questions directly. - Ask Schwinn or e-mail AskUs@schwinnbike.com - Ask GT or e-mail askgt@gtbicycles.com - Ask Mongoose or e-mail AskUs@mongoose.com For all other brands and other service related issues please call 1-800-626-2811 or e-mail us at CustomerService@pacific-cycle.com