Upgrade Pulley 40T for BD7/BD5 - Yokomo BD-503D [BD-503D]

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

Price:

£1.70

Brand:

Yokomo

Model:

BD-503D

GTIN:

3888

Not Available

Please kindly input your name and email address, we will inform you once we have the restocking.

Or you may find similar product under the
Spares / Hop-ups - Yokomo - BD7 category

Write a review

Description
FAQ

Product Brief: 40 Tooth Pulley

This 40-tooth replacement pulley is produced for 1/10 scale on-road RC differentials and fits BD7 and BD5 family drivetrains. The larger pulley diameter alters diff wrap and torque distribution, useful when tuning handling balance.

Broad compatibility covers Yokomo BD-series and DP/DP-DIB variants; confirm mesh and bearing clearance and recheck spur and pinion alignment after installation to avoid binding. Supplied as a single component, it is intended for hobby differential tuning 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.

Can I fit this pulley to older BD7 or BD5 variants?

Many earlier BD7/BD5 variants use the same basic diff layout, but confirm your specific model code against the compatibility list. If in doubt, compare bearing positions and shaft diameters before purchase.

Will changing to 40T require other drivetrain changes?

You may need to fine tune belt tension and diff setup; check spur and pinion alignment and consider small changes to diff oil or preload to achieve the desired handling effect.