Serpent 903809 28T Aluminium Oneway Pulley for 9XX Race Cars  [SER903809]

Serpent SER903809 Oneway Differential Pulley 28T Aluminium 9XX
Price:
NZD$84.71
Brand:
Serpent
Model:
SER903809
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Reliable Torque Control for 9XX Chassis

The Serpent 903809 aluminium 28T oneway differential pulley brings a durable, precision-machined option to 9XX owners. Its aluminium construction lowers rotating mass while offering robust service life under frequent track use.

Why the 28T Design Matters

The 28-tooth profile helps distribute load across the driveline, cutting down on spot wear and improving predictability through corners. It is a sensible upgrade for club racers and tuners focused on consistent lap times.

Specifications

  • Material: Aluminium
  • Tooth Count: 28T
  • Compatibility: 9XX Series

A practical addition for anyone wanting a more durable drivetrain without compromising responsiveness or adding bulk.

Can I swap this into a stock 9XX installation?

In most cases yes. The pulley is intended for Serpent 9XX series transmissions, but verify clearance and set screw alignment before installation.

Does aluminium affect balance or wear?

Aluminium keeps the part light while remaining strong. It can reduce rotational inertia and, when fitted correctly, will not increase wear on companion parts.

How often should I check it?

Inspect the pulley during routine maintenance or after a heavy run. Look for loosened set screws and check bearings for smooth rotation.

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