HRCSG19M05 - 19t 0.5 Mod Hardened Steel Pinion Gear 1/8 Bore

This hardened steel pinion gear features 19 teeth with a 0.5 module profile and a 1/8-inch bore, engineered for durable and precise power transfer in 1/18-scale RC drivetrains and compatible gear systems. The heat-treated steel construction delivers high strength and resistance to wear under sustained torque, helping maintain consistent gear mesh during aggressive acceleration and racing. Precision ground tooth profiles ensure smooth engagement with matching module gears, reducing drivetrain noise and improving mechanical efficiency. The 1/8-inch bore fits standard shafts and installs easily with typical set-screw or clamp-style pinion mounts.

• 19-tooth count with 0.5 module for compatibility with matched gear systems

• Hardened steel construction for increased strength and wear resistance

• Precision ground teeth for smooth engagement and reduced drivetrain noise

• 1/8-inch bore compatible with standard RC shafts

• Direct replacement for stock or worn pinion gears

• Enhances drivetrain durability under high-load driving conditions

• Suitable for speed and torque-focused setups