PTK8621 48P Lightweight Hard Anodized Aluminum Pinion Gear (3.17mm Bore) (34T)

PTK8621 48P Lightweight Aluminum Pinion Gear is a precision lightweight pinion gear from ProTek RC designed for 48 pitch RC drivetrain applications. Machined from hard-anodized 7075-T6 aluminum, it reduces rotating mass for quicker motor spool-up and improved acceleration while still offering good durability for hobby use. The gear features a 3.17 mm bore and comes with an included setscrew for easy installation on compatible motor shafts. It’s ideal for replacing worn stock pinions or tuning your gear ratio for performance changes.