HPI Savage 21 Delrin 2-speed First Gear (44T) by GPM DSAV1644T1T  [DSAV1644T1T]

Delrin 2-speed first gear for Savage 21

This replacement first gear is a Delrin 44T unit made for the HPI Savage 21 two-speed gearbox, supplied as 1 pcs. It is intended as a direct-fit spare for the model’s factory two-speed assembly and is described here in the context of scale RC drivetrain maintenance and tuning.

Use this Delrin gear when you need a low-wear option for the first-gear position, or as a like-for-like replacement after wear or damage to the original part. Delrin offers low friction against mating metal gears, so installers should verify gear mesh and endplay during reassembly and confirm the two-speed dog engagement operates smoothly after fitting.

Installation notes: remove the gearbox cover following your Savage 21 service procedure, replace the 44T first gear while keeping track of shims and bearings, and check differential and spur/pinion alignment before final torque. Run the vehicle at low speed to confirm proper shifting and re-check gear mesh after a short break-in.