Serpent SER401906 21T Pulley X20FWD Performance Part  [SER401906]

Serpent SER401906 Pulley 21T X20FWD
Price:
NZD$47.76
Brand:
Serpent
Model:
SER401906
Condition:
Brand New
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Fine Tune Your Medius X20 FWD

The Serpent SER401906 Pulley 21T is built for the Medius X20 FWD 1/10 EP lineup and aims to improve how power is transferred through the gearbox. Expect steadier response under load.

Precision Machining

With tight dimensional control, the 21T pulley supports correct gear engagement and reduces slop in the drivetrain. That level of fit helps keep lap times predictable.

Compatibility Notes

This pulley fits Serpent X20 FWD 1/10 EP models (SER400035, SER400036) and mounts into existing assemblies without major modification. It is useful for those tuning setup or refreshing worn drivetrain parts.

Will the 21T affect top speed or acceleration?

Tooth count influences final drive ratio, but this 21T pulley is intended to match factory gearing. Any change to top speed or acceleration will be subtle and depend on the full drivetrain setup.

Is special tooling required to fit this pulley?

Basic RC hand tools and a small hex driver are usually enough. Use a torque driver or calibrated wrench for critical fasteners if you have one.

Does it need lubrication?

The pulley itself does not require grease, but keep adjacent gears and bearings serviced as per your regular maintenance routine to ensure smooth operation.

Can I keep old hardware when swapping to SER401906?

If the original fasteners show corrosion or wear, replace them. Reusing good condition hardware is fine, but ensure set screws and pins seat correctly.

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