shimano Altus FC M311 Crankset 7/8SPD Square Crankset Bike Crankset|Bicycle Crank & Chainwheel| - AliExpress
PEDAL OFF-ROAD | SHIMANO GEAR
Shimano - Wikipedia
Carbon Fiber E Bike 27.5 Inch Electric Mountain Bike Pedal-Assist MTB Pedelec Bicycle with Shimano Altus - China Electric Bike, Carbon Fiber Electric Bicycle | Made-in-China.com