21-speed twist shifters and rear derailleur provide effortless gear changes when riding up an incline or speeding down a decline.
VARUN 26" Folding Ebike Adults Peak 750W 48V 21Speed E-Mountain Bike Up to 20MPH
Mountain Bike 24/26 Inch Wheels ， Shimano 21 Speeds with Mechanical Disc Brak...
Stone Mountain Hardtail Mountain Bike Boys/Girls/Men/Women, 20"/24"/26" Sizes
JOYSTAR Lubbock 20 Kids Bike for Ages 7-10 - Durable Hardtail Mountain Bike
Ecarpat Mountain Bike 24"Wheels 21-Speed City Bike Carbon Steel Frame Disc Brake
Rock Creek Mountain Bike, 24" Wheels, Adult Ages 13+, 18-Speeds, Grey
