Yokomo BD-503D 40T Diff Pulley for BD7 and BD5 [BD-503D]

Yokomo BD-503D 40T diff pulley for BD7/BD5

Price:

NZD$3.85

Brand:

Yokomo

Model:

BD-503D

GTIN:

3888

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Spares / Hop-ups - Yokomo - BD7 category

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Description
FAQ

Overview: Large 40T Differential Pulley

This 40-tooth diff pulley is a direct replacement intended for 1/10 scale on-road RC applications and suits BD7 and BD5 type drivetrains. The larger diameter pulley modifies differential wrap and torque transfer characteristics to influence cornering balance.

Compatibility stretches across Yokomo BD-series and DP/DP-DIB variants; confirm belt mesh and bearing clearance and check spur and pinion alignment after installation to avoid binding. The item ships as a single pulley and is intended for hobby tuning purposes only.

Packing includes

Diff Pulley - 1 pcs

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.

Is this pulley durable for regular track use?

The pulley is designed for hobby competition and routine track running; durability will depend on setup, material choice, and maintenance. Inspect teeth and bearings periodically and use compatible belts.

Any fitment tips when installing on BD7/BD5?

Ensure correct mesh by testing spur and pinion alignment before final tightening, check that bearings clear the pulley, and run the drivetrain by hand to confirm smooth rotation.