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The 3956R is the 54-tooth 32-pitch spur gear (0.8 metric pitch) designed specifically for the Traxxas 6814 center differential. It is not the same as the standard slipper clutch spur gear (3956) or the steel center differential variant (3956X) — though all three share the same tooth count and pitch, they are designed for different drivetrain configurations and are not interchangeable.
Fits the Traxxas 6814 center differential. Does not fit slipper clutch drivetrains (see TRX-3956) or the 6780 center differential (see TRX-3956X). Consult your vehicle's manual or parts diagram to verify fitment before ordering.
| Spec | Value |
|---|---|
| Tooth count | 54T |
| Pitch | 32-pitch (0.8 metric pitch / 0.8 Mod) |
| Material | Plastic composite |
| Differential fitment | Traxxas 6814 center differential |
Traxxas PN: 3956R · Retailer PN: TRA3956R · JackWagon SKU: TRX-3956R





