Sunrace CS-R63 Cassette 12-24t MFPN=5004 You can choose every Marathon

You can choose every Marathon for your E-Bike

Apex derailleurs share all the compatibilty and many of the featrues of higher priced options

Folding design saves space when not in use

Urban/street tire with shallow grooved tread for multiple conditions

Ring Position/Type Chain Retaining Single Ring Tooth Count 36 Round or Oval Round Drivetrain Speeds 9 Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Offset 3 Chainline/Hub Compatibility 135/142 MTB Hubs Chainline/Hub Compatibility 170/177 Hubs Chainline/Hub Compatibility 190/197 Hubs Chainline/Hub Compatibility 150/157 DH Hubs Chainline/Hub Compatibility 157 Super Boost Hubs Chainline/Hub Compatibility 141/148 Boost Hubs Material Aluminum Defined Color Black Direct Mount Type Direct Mount CINCH

Sunrace CS-R63 Cassette 12-24t MFPN=5004 You can choose every Marathon7 speed cassette. Super Fluid Drive technology. Steel cogs and lock ring. ~ 200g TECH SPECS Range 12 24t Gears 7sp Cogs 12 13 14 16 18 21 24 Color Nickel Weight