Coaster brake single speed

EF500 Trigger Shifter Single 3/7/8 Left Speed Corrosion Resistant ABS Sensitive Derailleur Bike Brake for MTB

Mavllos 5.2:1 Speed Ratio Spinning Reel 3+1 Bearings + 6kg Strong Brake Aluminum Alloy Spool Crank Personalized Paint, Single or Double Crank Optional

Youth 20" Magnesium Alloy Mountain Bike, Single Speed, Double Disc Brakes, Ages 8-14

Folding Bicycle 9T Aluminum Hub SP-14 Wheelset, 14-inch, V-Brake, Single-Speed (Black)

RUJIXU I9 690 Single Speed Dirt Bike Hub, 32-Hole, 135x10 Screw Shaft, Disc Brake

36T Bicycle Chainring Aluminum Alloy Direct Mount 12 Speed Bike Single Disc Brake for Shimano M7100 for M8100 for M9100

BRIDGESTONE Interior Shift Lever Wire Wire Single Piece 1480 5S1480 P5635 3122094S (Bridgestone) 5-speed/8-speed