Traxxas Hardened Steel Mod 1.0 Pinion Gear. This durable hardened steel pinion gear has a 5mm bore and a Mod 1 tooth pitch, making it compatible with a variety of applications. The gear is available in a variety of tooth count options, please select the specific gear you want from the pull down list above. Package includes pinion gear and set screw.
Traxxas Hardened Steel Mod 1.0 Pinion Gear w/5mm Bore
this gear is beefy. i usually use tekno pinions but this was half the price. the width of the tooth area is WIDE, wider than a standard 1/8 pinion gear. the one down side is that it has a normal 3mm set screw and not the nice 4mm that tekno has. other than that it appears to be really nice.
5 stars due to how cheap it is.