TRAXXAS XRT 8S Spur & Input Gear Set XRT3320S by GPM  [XRT3320S]

Heavy-duty spur and input gear kit for TRAXXAS XRT 8S

This kit is a scale RC drivetrain replacement that groups a 33T spur gear and a 20T transmission input pinion with a rigid aluminum mount and bearing support. The kit uses 20CrMnTi steel for the main gears and an aluminum 7075 fixed mount to create a three-point support layout intended to improve transmission stability compared with common two-point mounts.

Installation guidance: the design integrates the motor gear and input shaft to remove the separate 2.5mm locating pin used on some factory parts, and the kit includes shims and a bearing to help set endplay and mesh. The spur gear uses a 1.5 module with a D-shaped motor bore and a 14mm tooth face width, while the input gear uses a 1.0 module with 20 teeth.

For hobbyists tuning drivetrain durability or replacing worn plastic gears on the TRAXXAS 1/6 and 1/5 platforms listed above, this steel gear set offers a higher-hardness alternative and includes the shims and bearing needed to set proper mesh and shaft support; always confirm fit against the excluded TRAXXAS 1/5 X-Maxx 8S Monster Truck-77096-4 before fitting.