Serpent 903810 Lightweight 2-Speed Shaft Upgrade for Viper 989  [SER903810]

Serpent SER903810 Lightweight 2-speed shaft set S989
Price:
AUD$50.57
Brand:
Serpent
Model:
SER903810
Condition:
Brand New
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Lightweight 2-Speed Shaft Built for Better Driveability

Swap in the Serpent 903810 Lightweight 2-Speed Shaft Set on your Viper 989 to cut rotating mass by 10 grams and enhance throttle response and agility. The 18-teeth pulley adapter screws onto the shaft for a firm, yet smooth-running assembly.

Engineered Coating and Reliability

The hard anodized aluminium finish shields the shaft from wear and keeps running friction low under race loads. Serpent's factory testing backs up the part's stable performance in competitive settings.

Simple Fitment Procedure

Install the pulley adapter with a 10mm open-ended spanner and a 3mm Allen key, ensuring the adapter is tightened evenly. Correct installation minimises drive vibration and keeps the Viper 989 predictable on track.

Specifications

  • Weight Reduction: 10g
  • Compatibility: Viper 989
  • Material: Hard Anodized Aluminum
  • Pulley Teeth: 18

Is the weight saving noticeable on track?

The 10g saving on rotating components helps reduce inertia, which riders will notice as quicker acceleration and sharper responses when exiting corners.

Do I need to change gearing after fitting this shaft?

In most cases no gearing change is required, but if you adjust to more aggressive setups you might revisit gear ratios for optimal top speed and acceleration tradeoffs.

What checks should I do after the first run?

After initial runs check adapter screws for tightness, inspect the anodized surface for unusual wear, and confirm smooth pulley rotation. Re-torque if needed.

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