Hey RC enthusiasts, need to fine-tune your Traxxas rig's performance? This 20-tooth pinion gear is a must-have for your toolbox. It's got a 0.8 metric pitch and is designed specifically to work with standard 32-pitch spur gears and fit onto 5mm motor shafts. Swapping pinion gears is the easiest way to change your final drive ratio – pop on a larger one for higher top speed, or go smaller for more torque and acceleration off the line. Perfect for when you're setting up for a different track, surface, or just want to experiment with your setup. Made from high-quality materials, it's built to last through those high-RPM runs. Whether you're replacing a worn-out stock gear or doing some performance tuning, this genuine Traxxas part ensures a perfect fit and reliable operation. Keep your ride running at its peak! Always check your vehicle's manual to confirm compatibility, but for most Traxxas models using this spec, it's a straightforward upgrade. Get ready to dial in your drive and feel the difference on the track or in the backyard.