Koswork 32P M0.8 29T Lightweight Hardened Steel RC Pinion Gear 5mm Shaft - KOS03000-29 Servo Saver The Traxxas 8573 is a

The Traxxas 8573 is a center differential gear unit featuring a 47-tooth spur gear

It's part of Vallejo's Model Air range

Compatible HPI Racing vehicle requiring the S3M 174 UG 4mm rear drive belt

If you're running a Robart air system or building a scale RC plane with retractable gear

Koswork 32P M0.8 29T Lightweight Hardened Steel RC Pinion Gear 5mm Shaft - KOS03000-29 Servo Saver The Traxxas 8573 is aThe Koswork KOS03000 29 is a 32P M0. 8 29 tooth hardened steel pinion gear designed for RC cars running a 5mm motor shaft. Built from lightweight hardened steel, this pinion gear is suited to competitive and performance focused RC car builds where gear durability and precise fitment matter. The high torque set screw included with the gear locks it securely onto the motor shaft, reducing slippage under load. Key Features 32 pitch M0. 8 tooth profile