For drivers tuning their SRX4, the Serpent 500446 topshaft pulley is an effective way to refine belt drive behaviour. It helps maintain steady tooth contact for predictable power delivery.
The 24-tooth design aims to deliver reliable torque transfer and less belt slip during aggressive acceleration, making it a solid upgrade for race and hobby applications. It installs into SRX4 layouts without major modification.
Set belt tension to the manufacturer guideline and make small adjustments after test runs. Cleaning debris and ensuring the belt is aligned will keep the SRX4 running efficiently.
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