The AMP Research B4 is a full-suspension mountain bike with an aluminum, carbon and steel Alcoa / T6 / AMP frame. The frame comes in colors like red, red and polished.
Originally released in 1995, there are 7 versions of this bike. Due to the frame materials, we estimate that this bike weighs around 30 pounds. The B4 has saddle suspension.
The B4 comes with Shimano components, including an aluminum, Hsin Lung Control Tech stem, a threadless, Ritchey Logic, Shimano Deore Aheadset headset and Shimano shifters.
The B4 has 9,8 speeds and has a Shimano derailleur.
It comes with Hutchinson Specialized Team tires (26in x NaN) and Mavic Sun rims.