This is the optional Robinson Racing Gen3 50T Blackened Steel Spur Unit for the Traxxas 1/16 scale Revo and Summit.
Spur gear constructed of machined hardened steel with a blackened
finish that reduces friction and improves anti-galling (metal
cracking/breaking from friction)
Captured design to prevent slipper pad blowout
Aircraft grade billet aluminum backplate will not bend or break
Oversized pad with increased surface area for dependable performance
50T Spur Gear