The 1999 AMP Research B4 is a 24 pound a full-suspension mountain bike with an aluminum Alcoa Alcalyte 6013 T6 / AMP Research frame. The frame comes in polished or Candy  Apple  Red.

The B4 1999 is a is a lighter bike at around 25 pounds. It was released in 1999 and costs $2,065 brand new.

Components

The B4 1999 comes with Shimano Deore XT components, including an aluminum Hsin Lung stem, a threadless Ritchey Logic headset and Shimano Deore XT RapidFire SL shifters.

Drivetrain

The B4 1999 has 9 speeds and has a Shimano Deore XT derailleur.

Wheels

It comes with Hutchinson On The Rocks tires (26in x 1.9in) and Mavic X221 rims.