New MTX 251 Hornet Lightweight Steel Sprocket - Rear #520 (51T) #SPR27051H

CNC machined from case-hardened Chromoly steel the MTX Hornet Lightweight Steel rear sprockets are built to last. The combination of the fully-heat treated steel, and computer designed weight reduction holes the MTX Hornet will last longer than any alloy sprocket and weigh less than solid OEM steel sprockets. Self-cleaning holes increase chain and sprocket life while a nickel finish provides corrosion and wear resistance.
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
Self-cleaning mud grooves
Nickel finish counters corrosion and provides wear resistance
Lasts longer than aluminium sprockets
Presentable clamshell for an excellent presentation
Pitch: 520
Teeth: 51