Tributary GRX 600Description Tributary GRX 600 lets you see more, carry more, and experience more, all in less time and with fresher legs. The 6061 T6 aluminum frame and carbon fork are designed around our egravel geometry for a stable, comfortable riding position, even at higher ebike speeds on gnarly roads. With a Bosch Performance Line Speed mid drive system and 625Wh battery, youll fear no route take on long miles and steep climbs with gusto. Our Class 5 VRS