Item: Universal Upgrade 48P Pinion Sets 19T 20T 21T 22T 23T with Screws Material: steel. Number of teeth: 19T 20T 21T 22T 23T Tooth pitch: 48P Inner diameter: 3.175 mm. The pinion set is made of quality steel, durable and reusable. Easy to install and update. Comes with grub screws. Suitable for 3.175 mm shaft motor of 1/10 RC car. Compatible with Arrma HPI Kyosho Losi Axial Traxxas Tamiya Associated 1/10 RC Car Monster Truck Buggy. To avoid overheating the ESC/motor, please check ESC and engine temperatures regularly during running after changing the pinion. Note: Please make sure the RC motor shaft is the same diameter; Also make sure the spur gear and pinion are the same spacing, otherwise the teeth will not interlock. Package includes: 1 x 19T 48p sprocket. 1 x 20T 48p sprocket. 1 x 21T 48p sprocket. 1 x 22T 48p sprocket. 1 x 23T 48p sprocket. 5 x screws. 1 x wrench
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