TRX4M Front and Rear Center Driveshafts Medium Carbon Steel TRX4M037S by GPM  [TRX4M037S]

Centerline front and rear shafts

Aftermarket front and rear center driveshafts for 1/18 TRX4M platforms, sold as replacement parts rather than factory originals. Built from medium carbon steel to improve torque capacity and resist wear compared with common stock alloys, these shafts suit trail and crawler rigs that need stronger center components.

Function and fit: the center shafts transfer power from the transfer case to front and rear differentials, directly affecting drivetrain stiffness and response during heavy articulation or when running higher torque setups. Choose these shafts when stock parts show stress or when upgrading motor or suspension travel.

Fitting notes: the kit contains the required small screw pins for assembly; standard removal of the transfer output area is needed and routine hex drivers are sufficient. Verify spline engagement and coupler alignment on your TRX4M transfer case before final torqueing to prevent binding at extreme angles.

For builders who want a straightforward center driveshaft upgrade for TRX4M 1/18 4WD rigs, these medium carbon steel shafts give a practical balance of strength and fit for common repairs and upgrades.