Yokomo S4-503D16A 16T Drive Gear for YZ-4S Performance Upgrade [S4-503D16A]

Yokomo S4-503D16A 16T Drive Gear[Use w/S4-503R16] for YZ-4S

Price:

CAD$17.20

Brand:

Yokomo

Model:

S4-503D16A

GTIN:

0639342210336

Condition:

Brand New

Quantity:

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Description
FAQ

Accurate Torque Delivery with Yokomo S4-503D16A

The Yokomo S4-503D16A 16T drive gear is engineered for the YZ-4S series, providing a tuned balance of power and driveline efficiency. This component is aimed at racers and tuners who need consistent power transfer and reduced drivetrain lash. When paired with the S4-503R16 ring gear, it delivers smooth mesh and dependable torque distribution.

Fitment and Recommended Use

This drive gear is compatible with B-YZ4SF, B-YZ4SF2-1, MOR-010, and MOR-020 chassis. It is suitable for replacing worn parts or upgrading a race setup where precise engagement and long-term durability matter.

Remark :

Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

Will this fit the standard YZ-4S transmission without mods?

Yes. The S4-503D16A is designed for the YZ-4S layout and installs directly when used with the correct ring gear and stock gearbox components.

What performance change should I expect from a 16T drive gear?

A 16T drive gear gives a practical compromise between acceleration and top speed, improving midrange response while keeping stable top-end behaviour on typical race setups.