Why is it a disadvantage to have heavy unsprung wheels?
The relationship between sprung and unsprung weight on a bicycle is of critical importance. The heavier the unsprung weight to sprung weight factor is, the more critical the bike handling becomes. A higher weight rear wheel will not be as efficient in actuating the suspension as a lighter weight wheel. Therefore it is most important to design and implement light weight rear wheels to get the most out of the suspension. Bikes with G-BOXX systems do have much lighter wheels compared to bikes with deraileurs or hub based drivetrains, because no shifting components are attached to the wheels.
