Shimano Deore CS-M4100 10 Speed 11-42t Silver Cassette pedal wrenches Cassette / Cog: Shimano Alfine

Cassette / Cog: Shimano Alfine SG-S7051-8 (8-Speed Internal)

Deore LX T675

And if it is otherwise difficult for your child to perform a smooth pedaling movement

Chain:  KMC 8-speed

Shimano Deore CS-M4100 10 Speed 11-42t Silver Cassette pedal wrenches Cassette / Cog: Shimano AlfineSHIMANO DEORE M4100 10 Speed Cassette The SHIMANO DEORE 10 speed cassette offers a wide range of gearing options. With its lightweight sprocket carrier, it delivers smooth gear steps and precise shifting. Specifications: Cassette Body Type: Shimano SRAM 8, 9, 10 Speed Cassette Cogs: 11 13 15 18 21 24 28 32 37 42t Drivetrain Speeds: HG 10 Speed Color: Silver