Traxxas 18T 0.8 Metric Pitch Hardened Steel 5mm Shaft RC Pinion Gear - 5644

The Traxxas 5644 is an 18-tooth hardened steel pinion gear designed for Traxxas RC models using a 5mm motor shaft. Carrying part number TRX5644, this pinion uses 0.8 metric pitch, which is cross-compatible with 32-pitch spur gears, making it a practical choice when swapping or replacing the drivetrain gear on compatible Traxxas vehicles. Hardened steel construction means it handles the stress of repeated acceleration and high-torque running better than softer alloy alternatives, and the set screw collar provides a secure fit on the motor shaft to prevent slippage during use.

Key Features

• 18-tooth pinion gear with 0.8 metric pitch, cross-compatible with 32-pitch spur gears
• Hardened steel construction for durability under high-torque and high-rpm conditions
• Fits 5mm motor shafts, secured with a set screw for a firm, slip-resistant connection
• Direct Traxxas replacement part — matches OEM spec for supported models
• Compatible across a range of Traxxas vehicles sharing the same drivetrain pitch standard

Compatible With

• Traxxas models: 101177-4, 37454-4, 58434-4, 67454-4, 68454-4, 90376-4, 90386-4
• Traxxas vehicles using 0.8 metric pitch / 32-pitch drivetrain gearing
• Motors with a 5mm shaft diameter

What's Included

• 1x Traxxas 5644 18-tooth hardened steel pinion gear (0.8 metric pitch / 32-pitch compatible, 5mm bore with set screw)