Ming Sui chain wheel & big crank used high- strength material of aluminum alloy, not only reducing weight but also making the appearance of design more beautiful and outstanding. And make it have larger usable space, without respect to MTB, foldable bike, sports bike, city bike.

The crank set is the part of a bike's drive train that takes the pedaling power from a rider's legs and uses it to drive the chain and in turn, to rotate the rear wheel. The crankset is composed of a chain ring and crank arms on which the pedals are mounted. The crank set is mounted on the bike frame's bottom bracket.