Yokomo S4-503D17A 16T Drive Gear Race Upgrade  [S4-503D17A]

Yokomo S4-503D17A 16T Drive Gear[Use w/S4-503R17] for YZ-4S
Price:
CAD$16.25
Brand:
Yokomo
Model:
S4-503D17A
GTIN:
0639342210343
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Spares / Hop-ups - Yokomo - YZ-4 category
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Optimized 16T Drive Gear for YZ-4S

The Yokomo S4-503D17A 16T Drive Gear is engineered to deliver consistent power transfer in YZ-4S setups. Made to pair with the S4-503R17 ring gear, it helps reduce drivetrain lash and maintain smooth power delivery during high speed runs and rough track sections.

Rugged Construction for Track Use

Manufactured with precision tolerances, this 16T drive gear improves durability for competitive applications. Its sturdy build gives racers better drivetrain stability and predictable handling when the car is pushed hard.

Fitment and Simple Installation

This drive gear fits several Yokomo chassis, including B-YZ4SF, B-YZ4SF2-1, MOR-010, and MOR-020. Installation is straightforward, making it a practical swap for hobbyists who want a quick drivetrain refresh.
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 gear work with other ring gear sizes?

The S4-503D17A is designed to match the S4-503R17 ring gear for correct mesh and reliable operation. Using different ring gear sizes may change mesh and require adjustments.

What benefits can I expect after upgrading?

Upgrading to this drive gear typically yields smoother power transfer, reduced drivetrain slop, and improved consistency under load, which helps lap time stability.

Any maintenance tips to extend gear life?

Keep the gear teeth clean and check mesh regularly. Light lubricant on bearings and periodic inspection for wear will help preserve performance over many runs.

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