HRCSG18M05 - 18t 0.5 Mod Hardened Steel Pinion Gear 1/8 Bore

This hardened steel pinion gear has 18 teeth with a 0.5 module profile and a 1/8-inch bore, designed for robust power delivery and gear engagement in 1/18-scale RC drivetrains and other compatible systems. Heat-treated steel increases strength and wear resistance to withstand heavy loads and aggressive driving without premature tooth wear or deformation. Precision-ground teeth ensure smooth meshing with matching module gears, lowering drivetrain noise and friction for efficient power transfer. The 1/8-inch bore fits standard shafts and installs easily with typical set-screw or clamp-style pinion mounts.

• 18-tooth count with 0.5 module for matched gear compatibility

• Hardened steel construction for strength and long wear life

• Precision ground teeth for smooth engagement and reduced noise

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

• Direct replacement for worn or stock pinion gears

• Enhances drivetrain durability under high load

• Suitable for torque-focused performance and racing setups