SPKT REAR MTX HORNET LIGHTWEIGHT STEEL 251 51T #520

CNC machined from case-hardened Chromoly steel
Fully heat-treated for maximum strength and durability
Computer designed weight reduction holes
Lightening holes reduce rotational mass
Nickel finish counters corrosion and provides wear resistance
Lasts longer than aluminium sprockets
Presentable clamshell for an excellent presentation

Pitch: 520
Teeth: 51