The vr40utilizing the same compliance oriented and performance minded frame technology features found throughout the entire vr line the vr40 frame is built from tig welded hydroform 6061 aluminum and is paired with a uhc advanced carbon fiber fork its component selection was handpicked for maximum utility to deliver the rider a versatile experience for every adventure down the road shimano tiagra drivetrainthe shimano tiagra groupset gets a revamp in 2016 in looks design and technology foll