Extra Hard Steel Pinion Gear 5mm Bore Mod0.8 19T (RRP8719)

Extra-hard high-carbon steel pinion gear designed for brushless RC motors with a 5mm bore and 19 teeth. It is precision machined and stamped with the tooth count for easy identification. Includes one 4mm set screw; a 2mm Allen wrench (not included) fits the screw. It is compatible with motors using a 5mm shaft, and a 5mm-to-1/8-inch reducer sleeve is required for motors with a 1/8-inch shaft.

Designed to work with both 32 pitch and 0.8 module gear sets, this pinion can be paired with other gears without introducing extra noise or wear. The 0.8 module gears have a slightly larger outside diameter per tooth—about 0.00027 inches—so check fitment when upgrading gear trains. Built for durability and precise performance in high-performance brushless setups, it helps maintain consistent drive.