HRCSG20M05 - 20t 0.5 Mod Hardened Steel Pinion Gear 1/8 Bore

This hardened steel pinion gear features a 20-tooth count with a 0.5 module profile and a 1/8-inch bore, engineered for reliable power transfer in 1/18-scale RC drivetrains and other compatible applications. The heat-treated steel construction increases strength and wear resistance to endure high loads and aggressive acceleration without premature tooth wear. Precision-ground teeth promote smooth mesh engagement with matching module gears, reducing drivetrain noise and improving efficiency. The 1/8-inch bore accommodates standard shafts and installs easily with set-screw or clamp-style pinion mounts.

• 20-tooth count with 0.5 module for compatibility with matched gearing

• Hardened steel construction for strength and wear resistance

• Precision ground teeth for smooth power transfer and reduced noise

• 1/8-inch bore fits standard RC motor and axle shafts

• Direct replacement for stock or worn pinion gears

• Enhances drivetrain durability under high-load or racing conditions

• Compatible with a wide range of 0.5-mod gear setups